California’s searing summer to continue; active East Pacific could bring tropical “slingshot”

Filed in Uncategorized by on July 23, 2017 4,011 Comments

An exceptionally hot summer so far

Daily maximum (and average) temperatures have been exceptionally warm across nearly all of California so far this summer. (Via WRCC. Please note that proposed funding cuts will eliminate all WRCC data access in 2018.)

Despite a mild spring across most of California, summer 2017 has been truly searing across most of California away from the immediate coastline. Numerous, prolonged heatwaves have brought an extended period of well above-average temperatures at the height of summer, with temperature falling to around average for only brief periods. There has been an exception to the unrelenting heat in California’s interior: regions within 5-10 miles of the Pacific ocean have experienced greatly muted effects from these heatwaves, as they (so far) have not coincided with periods of strong offshore flow. Still, ocean surface temperatures have started to rise in response to persistent heat and weak coastal upwelling–and even the beaches have started to experience anomalously warm temperatures in recent days. This is especially true in Southern California, where SSTs into the 70s in some spots have greatly curtailed the typical seabreeze circulation, raised surface humidity into uncomfortable territory, and have prevented overnight temperatures from falling much below 70 degrees.

A persistent ridge has brought relentless heat to much of the American West since the beginning of June. (NCEP via ESRL Plotter)

What’s causing this extreme inland heat and unusual/uncomfortable SoCal humidity? An unusually persistent ridge has developed somewhat to the west of its typical summertime position over the Desert Southwest, which has favored the occurrence of numerous heatwaves across the CA interior. It has been an exceptionally hot summer so far across the entire American West–not just California–though in recent days a robust monsoonal moisture surge has moderated temperatures across Arizona and Nevada. This ridge is not located quite far enough west to bring very hot coastal temperatures, although it has acted to inhibit the northwesterly winds that normally induce cold water upwelling along the coast and has thereby caused coastal SSTs to rise and overnight coastal temperatures to creep upward.

 

Increasing monsoonal influence; rising heat

An upper low will be in a favorable position for higher elevation thunderstorms across NorCal today and Monday. (NCEP via tropicaltidbits.com)

Unfortunately, it appears that this pattern over the next 10+ days will bring more of the same–more heat, and rising humidity–though there will be the potential for some interesting weather at times. As of this writing, an upper-level low pressure center was located off the coast of Northern California, and is expected to move slowly inland through Monday. As it does so, sufficient moisture and elevated instability exists over much of the NorCal interior for potentially widespread thunderstorms later Sunday and Monday across the higher terrain. While much less likely, some isolated storms could occur over the Central Valley or North Coast region given the presence of a somewhat moist airmass. The potential for widespread lightning–even if much of it occurs with wetting rains–is a significant fire weather concern, given the existence of numerous large wildfires already throughout California and the lack of firefighting resources available to address new fires.

Yet more strong, California-focused anomalous ridging is in the forecast. NCEP via tropicaltidbits.com

Early this week, a stronger push of monsoonal moisture will also move into Southern California. Mountain and desert thunderstorms are a good bet, and there is also a slight chance of storms all the way to the coast. There is still pretty dramatic inter-model disagreement regarding the westward extent of this moisture in SoCal on Monday and Tuesday, which could mean the difference between unremarkable conditions and a pretty active weather period. At this point, it’s not clear which scenario will win–though it’s worth noting that the global models have done an especially poor job simulating westward monsoonal moisture incursions so far this summer. While such events are always difficult to simulate given California’s position at the far western margin of the monsoon region and the highly stabilizing effect of a relatively cold nearby ocean, it seems that the extreme persistence of anomalous West Coast ridging mentioned earlier has inhibited what otherwise might have been more impressive events so far this year.

Very hot weather likely to return across all of the West in coming days. (NCEP via tropicaltidbits.com)

Regardless of the degree of monsoonal moisture that overspreads California, however, there seems to be agreement that the ridge will re-strengthen over California–and that well above-average temperatures will return later this week after a brief lull.

 

 

 

 

Eastern Pacific extremely active; a tropical “slingshot” possible
Later this week and into next weekend, all eyes turn toward the eastern tropical Pacific Ocean. This region has recently been producing an exceptional number of tropical cyclones (i.e. tropical storms and hurricanes), and activity is actually expected to further increase in the coming days. Unlike recent storms, which have headed almost due westward into the remote Pacific, additional tropical development over the next 7-10 days is expected to take a more northwesterly track. This will potentially put several decaying hurricanes/tropical storms in a position that has historically been favorable for the advection of moisture into California from the south/southwest.

“Fujiwhara” interaction between two East Pacific hurricanes could “slingshot” tropical moisture toward California. (NCEP via tropicaltidbits.com)

Intriguingly, the GFS has been consistently suggesting the potential for a very unusual interaction to occur between two of these East Pacific tropical cyclones later this week. The animation below shows what is known as a “Fujiwhara interaction” between two such storms west of Baja California, in which two tropical cyclones move close enough to one another to influence each other’s circulation and begin to rotate around a common center. As this occurs, storm motion can become highly nonlinear and very hard to predict, and occasionally results in the smaller storm being “ejected” from the broader gyre in “slingshot” fashion. For what it’s worth, I can’t personally recall a model forecast calling for such an event to occur so close to California (it’s more common in the West Pacific, where typhoons are quite common).

What does this mean for California? At this point, it’s hard to say–tropical influences in California weather are always hard to project more than a few days in advance, and this is doubly true with the potential for such an unusual multi-storm interaction as discussed above. But it does appear there is a pretty good chance that tropical moisture (perhaps complimented by enhanced monsoonal moisture under stronger southeasterly flow) will eventually make it to California in the 5-10 day period. The most direct consequence of this will be a potentially dramatic increase in humidity–which may make the upcoming heat even more miserable. This moisture, however, will also make mountain/desert thunderstorms likely, and may bring a risk of showers/thunderstorms even to coastal areas. There are presently no  indications that a tropical rainfall event as substantial as that associated with the remnants of Hurricane Dolores in 2015 is in store–but the situation certainly does bear watching. All in all, it appears that the next couple of weeks have the potential to become pretty interesting by California summer standards.

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  • Thunder98

    Today is now the hottest day of the year so far at 88F.

    • Charlie B

      “I’m melting!”
      –Wicked Witch

      • Pfirman

        That was from water sir.

        • Charlie B

          Oh. Still a nice quote, no?

  • Thunder98

    The crickets are quite loud again tonight

    • Charlie B

      At first I thought “how random” but then l noticed they were deafening here too. Is it a sign? Is it? Of what?

      • They’re responding to warm temperatures after sunset! Not too typical for non-desert parts of California…

        • Charlie B

          I was hoping it meant an upcoming nice cool wet winter but alas you bring me back to stone reality.

        • Rusty Rails

          They were MIA here (at least sonically) in my part of Santa Cruz for many years until the high SST drought situation run for a number of recent years. They have stuck around for the most part and are quite happy with these warm monsoon nights.

      • annette johnson

        Down here in the desert they seem to get louder when the humidity levels go up.

  • Great Winter of 2017 (SMC)

    I have observed 5 lightning bolts and flashes 40 miles to my northeast towards Brentwood!

    • NeoLythic

      Ditto! Nice little light show for tonight’s bbq

  • Nate

    Just saw lightning to my east in orinda

  • AntiochWx

    Multiple flashes even some spider lightning!, counted about 15 during my time outside, what a treat! Radar is showing precip overhead, but it’s virga, nothing hitting the ground.

    • Craig Matthews

      Lucky you. Once again, action going around me in Monterey Co. Night isn’t over yet but still looking more like a bay area event. Glad you are getting to experience such a lightning show up there.

      • AntiochWx

        Wish more of you could have gotten into the action. I stayed outside for the whole duration, no precipitation, but the lightning show was more than expected. Wasn’t even remotely close to the storms I’ve seen in the mid west/east coast, but for our area it was awesome. Quite the rarity.

        • Craig Matthews

          Those cells near you were really lit up red. Must have been at least some isolated areas that received big rain drops, and enough to wet the ground. Sounds like there was quite a bit of c-g lightning happening in and around your area for a while there which makes for those low base BOOMs that shake the house.

      • Tyler Price (Carmel Valley)

        I’m close to you in Carmel valley and seeing the same thing happen to me on radar.. it’s frustrating! Hopefully the HRRR is right about more widespread convective showers developing later tonight around midnight in our area.. if it verifies we should get at least some form of precipitation before it’s all over and hopefully get to see some lightning! I hope Carmel Valley and cachuaga gets hit hard tonight!!? I shall ask the weather wizard for a favor.

        • Craig Matthews

          Its been a weird one looking at the radar. Cells to our south looking good today but just couldn’t seam to make it over to our side. That HRRR looks real good for us. May the weather wizard favor us tonight.

  • Dan weather maniac (ORINDA)

    Latest Bay Area discussion at 9pm saying the little cells hitting Stockton and Antioch and heading due west are part of a larger wave headed this way overnight.

    Crossing my fingers I wake up to at thunder later…

    https://www.wunderground.com/DisplayDisc.asp?DiscussionCode=MTR&StateCode=CA&SafeCityName=Orinda

  • BeerguyOE

    72F in Soledad right now!

    • Craig Matthews

      This is brutal for these parts. I couldn’t get the house to cool down below 82 last night in cachagua. No breeze at all.

      • 76 here. Wind slacked hours ago.

        • Craig Matthews

          The temp dropped to 77 here, then just shot back up to 83 with a se wind. Weird turbulence in the area, probably from downdrafts created by nearby virga.

      • Tuolumne

        Reminds me of visiting the East as a kid. Look at it this way – this is really rare for around here and it won’t last for long.

  • Charlie B

    I just read that July was Death Valley’s hottest month ever. This broke a record set exactly 100 years ago. Average high was almost 120 with a top daily high of 127 and an average low of 95. It was generally a dry heat, however. (Pitty the poor schlubb who had to take those readings in 1917 sans air conditioning.)

  • Rusty Rails

    A Metrolink train passenger stopped for the thunderstorm induced Acton flash flood damage ahead (with copters rescuing people nearby) is too damn busy to deal. Seems legit. Life in SoCal is rough sometimes.

    https://www.facebook.com/ADaveJournalist/videos/10155601825719264/

    • Cap’n

      Well said, but painful to watch.

    • molbiol

      What the freaking hell did I just watch?!!!!!!!!
      But then again this is Lancaster/Palmdale so not too surprised

  • Great Winter of 2017 (SMC)

    New, active thunderstorm near Danville and Alamo. 7-8 flashes and strikes seen in the last 7-10 min. LAL 3 of 6

    • Who Killed Kenny Strawn?

      Dry thunderstorms I bet

  • Jim

    Apparently there was a “fognado” in Santa Cruz…I’ve never heard of one…http://ksbw.com/article/fognado-blows-through-santa-cruz/11388011?src=app

  • Great Winter of 2017 (SMC)
    • Tyler Price (Carmel Valley)

      Yay!

  • Telegraph Hill

    Some cells hitting East Bay right now. Meanwhile in NE SF, it’s still 70F at 10:47PM. Time for some Earl Grey to try to stay up and experience a thunderstorm if one heads this way. https://uploads.disquscdn.com/images/98317671a20706ee61c437059d4a9db757bc85b659e253879149c8e2ad8b7e76.png

  • Thunderstorm

    Never have seen jumping beans radar til tonight, changes ever minute.

  • Craig Matthews

    Oh Yeah, this is turning out to be an awesome night for the Bay Area! Multiple outflow boundaries to watch as we progress thru the night, which gives the potential for an all nighter for activity, esp the Bay area. One active outflow boundary is seen now moving west over the bay area, giving some a you guys some fun action up there, and yet more active outflow boundaries from earlier thunderstorm complexes that are now entering the west slopes of the southern sierra. These outflow boundaries over Southern Sierra/eastern CA appear to be keeping active as they are continuing to enter both warmer downstream air, buoyant atmosphere, and a boundary zone(noted green line) where small scale waves are rotating wnw ward around a wave with a larger MCV (with a noted green “L”), that is moving/lifting slowly nw out of an enclosure of a leeside terrain eddy effect off the wnw side of Traverse Range(if that makes any sense, lol). Whatever all these features are really called in the met. world, it sure is interesting watching all of this activity interact and unfold, and esp glad to see at least some of the Bay Area folks are getting to experience a pretty cool lightning show outta this mess. I think this could go on, off and on, all night for the Bay Area, but for points south, like where I live in Monterey Co. its gonna take a lot to get something to happen, for who knows why. For now, enjoying the warm night with a waxing moon occasionally poking thru the clouds, loud crickets and an occasional flash of light from way up north of me. Side note, we gotta local who says she can tell you the temp by listening to the frequency-sound of the crickets…no joke,…not sure about her, but I actually think there is truth to that irt temps correlating to frequency-sound of crickets.. https://uploads.disquscdn.com/images/678e70cf71cb8eed62b01777ec1518c25f8db62aa96a49bcd6d7c3994b8e44dc.jpg

    • alanstorm

      Whoah.
      Good esssplain-nation.
      Better then TV….
      KTVU had some nice shots though

      • Craig Matthews

        There’s some good footage of the lightning on the news, that was filmed from someone in the Tracy area. Lots of c-g lightning in the south delta area toward Antioch.

    • Great Winter of 2017 (SMC)

      Was out on the deck from 8:45-10:45 and saw around 30-50 flashes in 3 different areas in total, I do hope that one big wave of convection can develop like what the HRRR is advertising

    • Tyler Price (Carmel Valley)

      Looks like Monterey and San Benito counties might lie on the southern fringe of the moisture and convective activity.. seems the southern edge of the Convection is more intense though, but not as widespread as what’s heading towards the bay.. well just have to wait and see what happens.. just felt the first few sprinkles and there’s lots of deeper clouds rolling in.. it helps I’m a little higher in elevation in the mountains so hopefully most of the rain will reach me before evaporating..

  • Great Winter of 2017 (SMC)

    Winds have gradually shifted throughout the day from the S to ESE

  • Bombillo1

    https://uploads.disquscdn.com/images/ed20ea38cde8f29a2084791f757433a338a1c565f12ed46e28ca666a010072a8.jpg https:/
    /uploads.disquscdn.com/images/ae4956121a0f407e2946c06d7e33215a7a1fc2dd7ee423434237a77c8c9428bb.jpg

    Outside of, well, Burns Oregon. I couldn’t get a shot of it but they were evacuating cattle. Hot, windy. It was bad.

    • Pfirman

      Burns, and not even a wisecrack from you?

    • Dan weather maniac (ORINDA)

      Wow, looks like the Nevada desert around Reno.

      • inclinejj

        Pretty much all the high desert looks the same.

  • Wow! It’s actually raining right now. Lol!

  • Rainmaker (San Jose)

    nothing here in Campbell, gonna leave my window open, hopefully wake up to some rain. Lot of stuff still too the east still

  • Tyler Price (Carmel Valley)

    So this is what’s going on right now.. you can see a low presssure disturbance spinning counter clockwise and sparking off additional Convection along the thunderstorm’s outflow boundary. You can also see the plume of rich moisture and high PWATS stretching from SE to NW.. the disturbance and outflow boundaries are helping to keep the lift needed for Convection going throughout the night.. hoping I get some action here in Monterey county! https://uploads.disquscdn.com/images/70e1b94f15635f1283166a1068327920561e946690068f1b243233fe582ea39d.png

  • Fairweathercactus

    I find it funny everyone thought So Cal was going to explode and it flopped out. Yet no one thought No Cal would do anything and it ended up having what we thought down here for the beaches and valley.

  • Idaho Native

    Argh. I was hoping for some actual rain to make it to the ground here in Marin but nada :(.

    • Pfirman

      Here in Woodland I did see some lightning around 3:15am, but no thunder and certainly no rain. Warm though this am.

      • Yolo Hoe

        I noticed the lightening as well down the road in Davisville — we also had a brief shower , as evidenced by pitter patter on the roof, at 2.45 ish and then again at 3.15 ish — attached is a picture that reminds me of sunrises in Arkansas and Kansas that were often shrouded in overcast humidity — overnight low hovered around a muggy 70F — 10 or so degrees above average. https://uploads.disquscdn.com/images/cd36caa2e5612bcbe8a7ea909d5c88d1997fb3ef3ee99170dd17d194bb81b35a.jpg

        • Pfirman

          Did I ever share that I was conceived in Arkansas though born in Ohio? Probably die in upstate California.

          • Yolo Hoe

            I recall the Cincinnati part, but not the Arkansas part — any idea which part of the ‘land of opportunity’ your folks were living/visiting? I’m from the Ozarks.

          • Pfirman

            Conceived in Little Rock. My mother had followed my father there while he was in basic training for WW2. She was working for the IRS there.
            Father unfortunately never made it back from Europe.

  • Dan weather maniac (ORINDA)

    75f this morning in orinda! This vs the usual 53-55 for summer lows….60 at most on hot days. So warm the bees are already out this morning.

    No big rain or thunder at my location last nightbut it’s currently sprinkling, just a little!!! And muggy.

  • RunningSprings6250

    2.30″ for the first 3 days of August, over half that fell yesterday. Dolores status baby!

    Oh, I mean, what a flop!

    57F this AM 56 DP. Sunny skies and pockets of ground fog.

    Was a great few days, thanks!

    • Cap’n

      Right on Ian. Somewhere in a beat up van near mountain Baldy Jose Mota is frothing in anticipashen of the first snowfall.

  • inclinejj

    Just started raining in Pacifica. Huge raindrops!

  • Great Winter of 2017 (SMC)

    Saw lots of lightning last night, Looks like convection moved mostly through my location, north. Got some big drops and light rain here and there through the night. Also we had a low of 70 last night which is the highest low I have ever remembered and recorded on my weather station. Funny that it then proceeded to warm up to 75, wierd, but very interesting.

    • You’re south of Santa Cruz right? Bummed, saw nothing last night in the East bay, people were calling strikes nearby that lightning maps wouldn’t show – does lightning maps have a hard time with cloud to cloud action?

      • Great Winter of 2017 (SMC)

        San Carlos on the peninsula, saw lightning to my NE and NNE

      • jstrahl

        Saw nothing in Berkeley, as mentioned above i got a few drops around 3:40AM.

  • AlTahoe

    Like others have stated it is unusually warm this morning. Somebody was already water skiing on Tahoe at 6:15am https://uploads.disquscdn.com/images/ad13a2ad47e7840fe64be712db067e127ae108b7761c7686d58d46d9b0143728.jpg

    • rob b-Truckee/East Bay

      very jealous, nothing like those early AM runs….great way to start a day.

  • Thirstier Nick (Santa Maria)

    Feels like the East Coast humidity meets Atacama Desert rain shadowing for most of the California Coast lately. Getting ready for Warped Tour today and I’ll probably be sweating by the gallons.

  • HighWater
    • Thirstier Nick (Santa Maria)

      Whoa.

    • Great Winter of 2017 (SMC)

      That looks likely to be fake

    • Lol that’s detonation cord and explosives not lightning

    • Tuolumne

      Deleted

    • Looks like det cord and explosice to clear some underwater logs so that the dock in the foreground can be used.

      • CHeden

        Ageed. 100% fake. Look at where the “bolt” exits the bank. There is a clear “puff” of something….like a rifle firing off a tracer round? Aside from that, once the bolt hits the water, that’s not the way electricity would flow in a turbulent liquid environment. Once hitting the water, the “plasma sheath” that surrounds/constrains the bolt would collapse, and therefore the current flow would lose any coherent structure and/or directionality.
        Lastly, the voltage gradient extending outwards from the where the bolt first touches the water would rapidly diminish with distance..hence any explosive heating would show a rapid decrease in intensity vs. distance.
        That this was posted (I assume) by someone in the “professional” media is frankly a bit disturbing.
        Certainly not the first time for fake news….as we know all too well. I guess I’m just grumpy that all we got is thin high clouds up here in Cottonwood.

        • Pfirman

          Same down here in Woodpile. How do you judge altitude?

      • Yep.

  • Andrew Valiunas
    • happ [Los Angeles]

      location please

      • Andrew Valiunas

        Eastern Sierra…right below Mt.Whitney…Alabama Hills-

        • Cap’n

          Thanks for posting, hope you keep reporting. It’s great to get reports from other parts of the Sierra, it seems we got the Tahoe/Truckee area covered! I’ll be driving through Lone Pine later and hope to catch some action at some point. Definitely looking forward to an iced coffee at Lone Coffee Roasters.

  • happ [Los Angeles]
    • happ [Los Angeles]
      • Hollow Scene (Riverside)

        Haboob!

        • Jim

          Ha ha….he said “boob”

      • alanstorm

        Was this recently?

        • happ [Los Angeles]

          Last summer in Phoenix

          • Pfirman

            It’s always summer in Phoenix.

    • Tuolumne

      Something similar happened in the period from about 8000 to 5000 years ago, when warmer temperatures resulted in more summer rain in the Southwest. Upper timberlines (upper limit of trees in the high mountains) went higher due to warmer summer temperatures. Lower timberlines (lower edge of the mountain forests, controlled by lack of moisture) went lower due to more summer moisture.

      The difference from today is that this warmer period was a broad, slow warming that leveled off and then slowly went down over thousands of years, rather than happening in a century or two.

      • Pfirman

        Dang, you are old!

        • Tuolumne

          It was just like yesterday to me! Boy was I glad to see those sabertooth cats go extinct a few thousand years before this warm spell.

          • alanstorm

            Good. Now you can tell me how Noah got a pair on the Ark without being bitten.
            (Another great ancient Flood example BTY)

          • Tuolumne

            He didn’t!

      • alanstorm

        Maybe another piece of the secular controversy of how the Grand Canyon Was formed aka a rapid warming/ melt event?
        Being a flood-guy, my vote is a rapid flash-flood erosion formation.
        Would have liked to have been a fly on the wall when that went down….

        • Stevo Pusser

          How rapid are you talking about? Most of the rocks eroded from the Colorado Plateau ended up as sediment in the Gulf of California/Salton Trough, and those rocks indicate deposition over millions of years, not a few.

          A massive flood would leave extremely coarse sediment with gigantic boulders, such as we see from the Lake Missoula floods in Washington–instead we see mud in the Imperial valley, along with many fossils preserved in life position throughout the column, such as oyster reefs. Below the muds are preserved a record of the Gulf before the Colorado started dumping into it about 5-6 my ago–clean sands, cobbles, and corals, showing it looked much like the GOC further south, with clear, tropical waters.

          • alanstorm

            So I guess no massive icemelt FF then. Ho-hum.

          • Tuolumne

            There have actually been a number of catastrophic floods during ice ages and their subsequent meltdowns. Not just the Columbia River, but also the Missouri River and areas that drain into Hudson Bay. Link: http://www.pbs.org/wgbh/nova/earth/megafloods-of-the-ice-age.html.

            So earth scientists have plenty of examples of megafloods and the signs they leave behind. Things like thick layers of unsorted coarse sediment, huge boulders, gigantic potholes, huge water-eroded landscapes with no apparent water source, etc.

            One of the longstanding problems in the development of the science of geology over the last 200 years has been getting the right balance between crediting gradual processes of erosion and deposition vs. catastrophic events. Both have been important in the evolution of earth’s surface.

          • alanstorm

            …..giant petrified logs deposited by flood in the middle of the desert.
            ……massive ice jam buildups & bursts
            … collosal volcano melt off floods
            -And here we get all excited about a flooded intersection in Afton

          • Tuolumne

            When weather happens to you and your family it’s a big deal.

            When it happens to others far away it’s a new story.

        • Tuolumne

          I should also add that these floods (approaching 100 million cfs) happened when ice sheets backed up enormous quantities of water. As far as is known this was not a factor in the upper Colorado River watershed, where glaciers were the montane valley type and there were no gigantic lakes to break loose suddenly.

          Far smaller but still sizable floods also happened on the Truckee River, when glaciers blocked the outflow of Lake Tahoe and it rose ~90 feet before floating the ice dam away.

          California was a very different place in those days.

      • Yolo Hoe

        But hey, what could go wrong (tongue firmly in cheek)?

    • Hollow Scene (Riverside)

      I wonder if events like the last few days could become more common?

  • jstrahl

    Woke up at 3:40AM, heard ping sound from fan shaft, so i went to the front door, and indeed, drops were falling. I think i counted about 50 of them in central Berkeley. Not enough to wet the sidewalk, so i won’t classify today as T, at least not yet. low was 62 deg F.

    • inclinejj

      In Pacifica it has been raining on and off but not enough to trip the rain bucket.

      • jstrahl

        I got 10 more drops around 10AM.

  • Thunderstorm

    Forecast out of Medford is grim for next week. Multiple dry lightning events with very warm temps.

  • flyboy45

    AFD for Tucson Fri August 4, 2017
    https://uploads.disquscdn.com/images/1084f88537140bb4fa8198315ead97751499427f7d1e508cbfc28bd04f8b27dc.jpg
    ” The wettest July ever followed by an almost screeching halt in

    early August. Such is the way of the North American monsoon (aka

    these things happen).”

    • Hollow Scene (Riverside)

      ” Ultimately the monsoon flow will return. Good signs of the ridge
      rebuilding immediately east of our area the second half of next
      week, along with some significant tropical activity in the
      easterlies across central Mexico. It may take some time to get
      back in the groove, but the heat and shifting ridge will get it done.”

      I hope SoCal gets another shot in August also, but a brief break from the humidity doesn’t sound so bad. I feel like it’s been humid for most of July!

      • happ [Los Angeles]

        If we are not getting rainfall then it is OK for the dew points/ temps to lower for a while. This has definitely been a muggy summer starting in late June.

        • Hollow Scene (Riverside)

          We had a brief break around the 4th July I think, but I can’t really remember the last time is was humid consistently every day like this. Usually it alternates between dry and humid… I have kind of enjoyed the change, despite being miserable at work lol.

        • Dan the Weatherman

          The heat seems to have started earlier than usual this summer. It began in mid June instead of early July, and it has been rather humid.

    • Craig Matthews

      alabamawx.com has an interesting article about heat burst that happened in Hobart, Oklahoma, where the temp went from 81 to 104.4 just after midnight. The article also has a description of what causes a heat burst if anyone is interested. alabamawx.com

    • Charlie B

      What is going on in Vacaville? When i returned to Reno Sunday afternoon I kept track of temperatures. It was 65 in Berkeley, 80 in Vallejo, 88 in Fairfield, then 97 is Vacaville and backed off to 93 in Sacramento, only to rebound to 100 in Roseville. These were car thermometer temps, of course.
      Vacaville should be slightly cooler than places more central to the valley, I would think. I tracked temps all week and Vacaville was almost always several degrees warmer than Sacramento or other points around it to the east.

      • Pfirman

        Agree on the question, but have no clue.

        • Drew Stofflet

          Grapes ripen in 3 arcs, sugars in the juice, skins, seeds-and-stems. Sugars go first and (sometimes) fast (especially during heat spikes). Skins, seeds n stems trail behind. To achieve balanced phenolics (color, flavors, tannins), long, slow, steady weather is needed, to bring these 3 ripening arcs together. Hangtime is literally “time to hang.” If sugars go fast, grapes mist be picked early and the wine is often bitter, green and or transparently fruity.

      • V-Ville

        Longtime Vacaville resident and have observed that Dixon, Davis and Sac are frequently cooler. I’m a hobby farmer, weather observer and longtime reader of this great blog and my untrained conclusion is those areas benefit more from the Delta breeze than those of us tucked up next to the hills. I check Nut Tree airport daily and this year especially we run warmer if not significantly warmer than prediction. East Vacaville is usually cooler than West Vacaville due to Delta Breeze.

        • Pfirman

          Welcome. I am in Woodland. I now call said breeze the Melta breeze because it ain’t cool no more.

          • V-Ville

            Thanks. Grow wine grapes. Would help hang-time if it cooled down.

          • matthew

            I assume in your area you are growing cab/zin and maybe some syrah?

          • V-Ville

            Mostly Chardonnay. Use shade cloth, dense mulch and canopy management to combat less than ideal conditions. Also grow Cab Franc, Cab Sav., Merlot, Petit Verdot and Malbec for field blend table red. Better suited to heat. A hobby that’s overtaken our lives. Crush for Champagne starts Sunday – one week early. Consequently pay very close attention to weather and affect on growth/production. Anxious to see affect of huge winter rains on next year’s growth. Love this blog and all the feedback. I’ve learned so much.

          • matthew

            Surprised about the chardonnay…I thought that was more of a cool-climate grape (i.e. los carneros).

          • V-Ville

            Yup it is. We planted what we like to drink and make due. The benefit of being home winemakers and not commercial.

          • Pfirman

            Ha, I make five reds a year, eight cases each. What do you grow?

          • Yolo Hoe

            Yup, welcome from far southwest Davis — brethren of the Melta

      • Craig Matthews

        I think sometimes something like this happens(I tried a drawing here where blue represents cool marine air, yellow represents modified marine air like temps in the 70’s to mid 80s, and red represents heated air into the 90’s to near 100s). Marine air flows sort of like water through the bay area, bay area valleys and passes, due to its higher density. Therefore, in cases like Vacaville or east Bay Valley area like Concord, marine born air has to eddy back around the mountains to the west, that are higher then the marine inversion layer. In the case of unique temp contrasts between Fairfield, Vacaville and Davis, the topographical layout is a big factor in temps in places like those…I think that air flows through the straits and has easy access to Fairfield and Davis due to the fact there is little or no mountains in the way. But for Vacaville, due to the higher terrain to it’s west, marine air sometimes bypasses Vacaville to the south, flows into the southern Sacramento Valley, heats up in the process, and then eddies back from the nne into the north part of Vacaville, where by the time it reaches north and central Vacaville the air is much more heated. Another factor could be some downsloping effects off the higher ridges to the west of Vacaville when the marine layer is at a certain elevation where it can barely spill over those ridges, which also causes temps in Vacaville to be warmer then areas to the east like Davis, and Woodland at times. Hope this is somewhat readable. The white circles, from left to right, represent Fairfield, Vacaville, and Davis https://uploads.disquscdn.com/images/476d730329b3abdeffbdc9975c984d170f5f43cba6c7683a4d20f0ca6f4125c9.jpg

        • Craig Matthews

          There are exceptions of course, and rare ones like what Daniel showed..

        • gray whale

          great job as always Craig!

          I see you’ve branched out into digital graphics as well 😉

          • Craig Matthews

            Playing around with the “Paint” options these days. High tech stuff, lol..

      • Tuolumne

        I want to second both Craig and V-Ville on this issue. The Sunset Magazine climate maps show the Vacaville area in zone 9, which is one of two classic Central Valley climate zones with little or no Delta breeze. In contrast, Davis, Dixon, and Sacramento are in zone 14, a climate that’s somewhat moderated by marine influence. Link: http://www.sunset.com/garden/climate-zones/sunset-climate-zone-northern-california. On the map, Vacaville is just west of the 80 symbol west-southwest of Sacramento. Vacaville is tucked around a corner away from the main influence of the Delta breeze.

    • RunningSprings6250

      Cow farts.

  • molbiol

    European brings another significant heat event into northern areas in the long term. It did a good job predicting our current heat event several days in advance and has done well in the long term compared to the GFS. https://uploads.disquscdn.com/images/50f742b82c8948f6e9e17793a60f354f714e417bbebb0bdb8028d6b64a0b8fb4.jpg

    • Pfirman

      I want to strangle Rex Tillerson.

    • SoCalWXwatcher

      What is EC model showing IRT monsoonal moisture along with that ridge?

      • molbiol

        None of the models show anything that favors a monsoon surge in the short and long term

    • Pfirman

      Whoa, Mexico.

    • alanstorm

      Furthest west in CA was in Lake Co last night around 11.
      Glad that was the only one, anything that hits ground up here will result in wildfires.
      Hopefully too much cloud cover today to fire anything up

    • Nathan

      So far seems like we have escaped major dry lightning in the most fire-prone areas – most lightning has either accompanied moisture or been in less fuel-rich areas. Tomorrow the airmass is headed over more of NorCal so not out of the woods yet, but overall seems like fire threat is much lower than previous lightning outbreaks (eg June 2014).

      • Pfirman

        I hope you knocked on wood. Just in case, I am covering for you.

        • Nathan

          thanks.

    • SoCalWXwatcher

      That map really shows that if you’re looking to enjoy summer convection, the coastal areas aren’t the place to be.

      They’re a great place to be if you’re looking to escape summer heat and winter cold extremes though.

    • Admode (Susanville)

      Had a couple of booms late yesterday afternoon at the bogard campground. Probs on the north end of that action.

    • Pfirman

      Perhaps he meant ‘missing out’. What is a teleconnection when one element is not present?

      • 82/83 El Nino baby (San Jose)

        I believe more years are enso neutral vs el nino or la nina. But even then, enso neutral could be attained different ways. The entire equatorial pacific could be neutral, the east could be cold while west is warm, reversed, etc. Based on last year and the drought years, it feels like it matters most where the cold and warm water is located in the NE pacific. This determines where high and low pressure tend to setup.

      • IMO That’s what we’ve had for awhile after 2015-16. Even though Nino3.4 was neutral/weak La Nina there was still El Nino like behavior (a lot of shear) in the MDR (main development region) of the Caribbean as well as cool waters off Africa.

    • Dan the Weatherman

      It was phrased somewhat oddly, but what they really mean is that we don’t have a developing El Nino this year. I wouldn’t exactly say that it is “missing” as ENSO is always there in one phase or another (El Nino, Neutral (La Nada), or La Nina).

  • SoCal Al (El Monte-SGV)

    After 2-days of temps hovering around 100 (heat index 110), dew points in the upper 60’s to low 70’s and ~ 50% RH, I’m ready for a break! Here’s some music to my ears.

    From Oxnard:

    Still a warm day today but dewpoints are definitely lower, especially inland so it won`t be quite as muggy. And increasing onshore flow will pull in cooler maritime air, at least for coast/valleys.

    • thlnk3r

      Yep. Forecasted highs for the next 5 days are looking on average for the Inland Empire. NWS SD spoke of some monsoonal moisture returning next weekend.

  • Craig Matthews

    So, for this afternoon, I am hoping that, as the monsoonal wave now stretched over central CA slowly lifts north and west, this track of the wave and its location north of Monterey Bay, along with a MCV and associated small scale cyclonic field moving to a position off the S.F Bay, will help draw the marine layer( to the south of the MCV) back into the coastal areas south of Half Moon Bay by late afternoon or this evening( I put a blue line with arrows in there to show what I am talking about in regard to marine layer boundary). Will see. Am also looking for the possibility of afternoon terrain driven convection around San Benito Peak to the northwest of Coalinga, but that will depend on several factors such as the amount of solar heating today, wind directions up through the column, and the depth of available moisture and instability combined. I put a red circle in the area I am talking about. Looks like another active day for the Sierra, and possibly over the Sac Valley and North Bay this evening?? Will see…. https://uploads.disquscdn.com/images/66ebde851948fc08d24c96d2d541d7cdb02ceda3f2be24780e07a12a174a52f9.jpg

    • Yolo Hoe

      Great play by play regarding your hoped for outcome — great descriptive text linked to the visual

      • Craig Matthews

        Thanks. After such oppressive conditions this week, am really looking forward to Mother Nature’s AC.

        • matthew

          Looks like our hot streak is ending in Truckee also. We are projected to be in the high-70’s/low-80’s starting tomorrow and through the rest of the 7-day. IOW – average and maybe a little below. Definitely looking forward to it.

    • Pfirman

      You ever summit San Benito?

      • Craig Matthews

        I’ve driven up to the top of San Benito Pk a few times, lol. Ugly microwave station up there. Same with Santa Rita Peak. But man, the views of the Sierra from Santa Benito on a clear day is outstanding. With my small scope, I could pick out Mammoth Mountain and Mineral King, and even Bear Mountain down in the Tehachapi Mtns on a very clear day…. from San Benito Peak area. A friend of mine owned a garnet mine down there, and we use to go dig for yellow-green garnets back in the good ole’ days. One time, we were caught in an afternoon thunderstorm back behind San Benito Mtn, where lightning was touching down right around us, which made us run for the truck. There was only a few large drops of rain where we were, but just a mile down the road there was so much rain it turned the road into a huge muddy mess.

        • Pfirman

          Driving down I-5 the peaks just north of Coalinga look very inviting. I would not know which is which but nice to know some have roads.

    • SoCalWXwatcher

      Out here we usually rely on offshore winds diving down the mountains to give us our dose of adiabatic heating.

  • DelMarSD

    SD County mountains received a great soaking the past few days. Great to reduce the fire danger temporarily. I was hiking up at Laguna in June, and was surprised at how good everything looked. Nice and green. Very few dead trees, mostly pines. Nothing like the horror stories of the southern Sierra (huge stands of dead conifers). Didn’t receive anything really here, unfortunately. Just a light shower that left less than .01. Hoping for some TS remnants one of these days! I’m heading off the North Carolina in a few days, and will surely get my fair share of thunderstorms there! I’ll try to snap some pictures.

  • HighWater

    Sac Bee is reporting a study from UCLA that links your pet with global warming

    • molbiol

      https://patch.com/california/hollywood/fido-fluffy-are-hurting-environment-ucla-study-says

      In other words, being alive and being a human being and living life
      like a 21st century human being causes global warming. Here is a solution, put a male and female into suspended animation and set the timer for 1000 years. Meanwhile the rest of us will kill ourselves…problem solved

      • I wish I could sell an idea like this and be awarded $$$$$$ of grant money under the token of global warming

      • Pfirman

        Just the female. The y chromosome is the problem.

    • matthew

      I also read an article recently that all we need to do to meet our carbon targets is give up eating beef. You can still eat all the pork, chicken, dairy, etc. that you desire. But giving up beef alone will get the US to its targets.

      I know, too much of a sacrifice for our country…

      • Cap’n

        And not a popular subject matter. It’s our god given right to gorge.

        • matthew

          It is not really even much of a sacrifice. Not like you are asking everyone to go vegan. Just lay off the cow.

          • Cap’n

            I have so much to say about this that I can’t even start. I’ve been a VegHead for 9 years or so, vegan for a couple, single best thing I’ve done for this sick planet. Man the cooler temps were nice today.

          • matthew

            Yup. 70’s/80’s looking forward. Nice!

            Pic is of a nice storm brewing over Rose right now. Starting to hear the thunder in Glenshire. https://uploads.disquscdn.com/images/ee40e36d43ce2d9440e7b5cebd990efae6a48ed651c50715792e2c1db1ea588a.jpg

          • Cap’n

            Enjoy, I’ll be outta town til Wednesday but definitely monitoring the Doppler from time to time.

          • Pfirman

            Commendable. I once went fructarian Arnold Ehret style for a couple years and dropped from 250 to 190. I could not keep warm in the winter. Calling it good at 230 with a little meat once in a while, but I plant a lot of trees.

          • Pfirman

            A lot of people would have a beef with that. Remember the bumper sticker….’Beef, it’s what’s for dinner’?
            Daughter is vegan, wife is veggie but will deign to eat a wild-caught salmon once a blue moon, while I hit up the chicken thighs, lamb, and rare tri-tip on the bbq.
            Mea culpa, etc.

          • matthew

            Same – I am mainly vegetarian just because I like being healthy. But I do have meat in a meal a few times a month. Beef a few times a year – usually a BBQ’d tri-tip when I have friends over.

          • Pfirman

            Dang, now I just have to put some tri-tip on the bbq tomorrow for some friends.

            Tonight though, pesto on egg noodles, salsa cruda, and gazpacho, all home made and fresh from the garden.

            It will be delicious, but I’m so healthy I could cry.

  • rob b-Truckee/East Bay

    Strange drops on the ground here in the East Bay, I believe we often call this rain in the winter…but when it’s 85 outside and humid I am thinking I was transported to Hawaii.

    • AntiochWx

      Been on the lookout for drops here, but haven’t spotted any.

    • AntiochWx

      Just as I posted a few minutes ago, I went to check again and sure enough the smallest drops just hitting the face and arms, hardly enough to notice on the cement.

  • Cap’n
    • rob b-Truckee/East Bay

      Howard also had a quick update yesterday….does this mean the fall is near???
      http://mammothweather.com/

      • Charlie B

        I think today marks the half way point of (calendar) summer.

        • Only 89 days til Nov 1st and 113 til Thanksgiving, which is pretty much the start of ski season.

          Summer, you’re dead to me.

          • GR

            Summer says. .. .

            ‘Oh, yeah?’

  • Admode (Susanville)
    • RunningSprings6250

      You mean horizontal! ?

      • Admode (Susanville)

        Haha! No idea why they are posting like that. They’re looking established now https://uploads.disquscdn.com/images/b745bb60b2b4292f04c5895a26fe241f619d6ae19b30e0cd278b2f8888718970.jpg

        • RunningSprings6250

          ? For some lame reason if you take a picture with the phone straight up’ it posts sideways, but if you flip the phone sideways to ‘landscape mode’ it’ll post normal!

          Alternatively if you edit/crop the ‘vertical’ photo even slightly it will then post normal.

          I don’t get it but that’ll all work for ya! LOL

          • Admode (Susanville)

            Thanks. I usually take them horizontally so that makes sense.

  • RunningSprings6250

    Someone feed this future hurricane a bottle of Levitra so it rises to the occasion and spews all over Ca. https://uploads.disquscdn.com/images/bbea1751c9ce1a23151e1ee25a7574efb7c615f5fec6dbf004dee42ab1d178d9.png

    • molbiol

      That is actually a nice illustration of the forecast ridge position and why I think the monsoon is done here in California for the summer. Depending on how you look at it, it seems like Levitra has done its job already 🙂

      • RunningSprings6250

        I agree and it definitely feels like this monsoon surge was the climax of our summer.

      • Tyler Price (Carmel Valley)

        I wouldn’t write the monsoon off yet in California.. it’s only the first week of august!! We prettty much always get at least one more monsoonal influx into California towards the end of august or the first week of September.. whether it’s a modest one or not. Sometimes the late august monsoon surge can be some of the best from what I remember.

        • alanstorm

          There was an abundance of moisture all this record winter, so it stands to reason there will be abundant moisture available for rest of the summer monsoon.
          (the IVT was off the charts for this recent surge!)
          Then hopefully ANOTHER above normal moisture surge for winter!

          • Yolo Hoe

            Dried out and ready to sporulate again?

          • alanstorm

            Had a few random drops an hour ago. They went “poof” in the dust.
            Nothing here resembles moisture ATM.
            Soggy mushroom & mud a distant memory….

        • Who Killed Kenny Strawn?

          The best has yet to come. September is the best chance of “summery rain” (warm, high dewpoints, thunderstorms) in the low elevations of California.

    • Craig Matthews

      Looks like a long skinny claw reaching out to the Pacific. Just gotta get that claw to reach up here there we’re golden. I’m hoping that in September we get some GOA Lows to drop down and cut off west of CA, and draw in hurricane moisture from the south, as the cut off Low moves to a position off Pt Conception. Then we’d get wet thunderstorms ahead of a cold front.

  • Hollow Scene (Riverside)
  • AntiochWx

    Some rain is showing on radar in the east bay, but it isn’t reaching the ground. Just a warm gloomy cloudy day.

    • Pfirman

      The clouds actually made me happy and the breeze from the south had a hint of cool in it for a change. But, yeah, I was sweating in the garden.

  • AntiochWx

    A few drops, hope the batch to the SE can hold on and make it up here. Looks like its hugging the highway and will stay off towards Oakley and further east.

  • Great Winter of 2017 (SMC)

    The last 24 + hours reminded me of winter, just 10-15 degrees warmer. I have never seen such a dark overcast from monsoon moisture before and such weird temperature readings. Will remember this interesting monsoon surge for a long time

  • CHeden

    Here’s a couple of pics of today’s ride through Lassen. First time for us since they opened 36. The first pic is King’s Creek running through Upper Meadows which is still basically a swamp. The next pics are from Lake Helen, which is obviously not ice free yet. But the real eye popper is the blue ice in the shallows surrounding the shoreline. Absolutely the most stunning thing I’ve ever seen lake ice-wise. The blue color is so real…and not an artifact of simple lighting tricks. Up close the ice really has a deep blue-ish cast to it. Then to top it off, just a few miles up the road, Emerald Lake is also primed for all us shutter-bugs.
    Anyway, snow is still in pockets down to just above 7,000′, and with nighttime temps due to start dropping soon, I’d imagine that a lot of snow/ice we saw today will last through the rest of the Summer. https://uploads.disquscdn.com/images/0ad6b7d008be86c5d43108a4a17bee92fa5755a86534fb3bb7153c5308cbde71.jpg
    https://uploads.disquscdn.com/images/313556b733a858a3ae4046feea4ccbf9683c6193e92c607648e05ab2e3302620.jpg https://uploads.disquscdn.com/images/e51d8c7d60a679656fc88a80f6301d35c6f56744e47aad2fcaade8413e224047.jpg https://uploads.disquscdn.com/images/03bf735701b813005efd633379bb42c71db995e0a7f555d5608c2f2e78ff4816.jpg https://uploads.disquscdn.com/images/2473b93d6b880685bcde2915b8bc2e364c32c42b827dbccb777e31142ee20e82.jpg https://uploads.disquscdn.com/images/1c0b51dcf243663537e89980fe2c374be398c8089bb1373b0b98e0c8d59eee08.jpg

    • Tuolumne

      Nice shots, and I’m envious of your trip!

    • happ [Los Angeles]

      Beautiful and looks refreshing!

    • Dan weather maniac (ORINDA)

      Amazing. Lassen is probably my favorite inland mountain area….of CA… of the few parts I have seen from sequoia and big bear down south to Shasta up north. But there is something about Lassen and it’s unique features that really stands out as your pictures show

      • Wow I might have to drop by there after the eclipse on my way home, get some astrophotos with that blue mess I’m the foreground

    • Craig Matthews

      So nice!! When I was up there in mid July, the road was still closed. Those lakes were completely frozen over.

  • gray whale

    Skies are dark all around us here up the hill from Coloma, looking at the radar there’s a line of storms passing through Calaveras to the Bay that might wrap around and slip one past the goalie up here. Leaving my car windows down, happy to take one for the team….

  • Cap’n

    Just got a random quick shower heading through Stockton.

    • mbmattcor (TD 6400′)

      Radar looks impressive in the valley, I guess it’s hitting the ground. I’m in SJ and had some drops on the way down here earlier today.

  • happ [Los Angeles]

    No complaints because any rainfall in California is a gift. But I must admit that the idea of lower dew points for a while sounds nice. SST are still warm so nights may stay a bit muggy but maximums are cooling nicely into early next week.
    Hi/Lo: 91/ 73

  • Great Winter of 2017 (SMC)

    Refreshing to hear some “Holy We Cows” the last couple days, just waiting for alanstorm’s “INCOMING!”

    • alanstorm

      Got a long wait, buddy.
      40 days?

      • Pfirman

        Sounds biblical.

      • Great Winter of 2017 (SMC)

        That’s a good bet

  • Andrew (Berkeley)

    The past two weeks I’ve been hoping for an end to the heat wave before my half dome hike this weekend. But now I wish it would just stop raining! Been drizzling on and off for a while in the valley (which sadly but unsurprisingly has full LTE service for most carriers now)

    • Great Winter of 2017 (SMC)

      AT&T never works there, does it now?

      • Andrew (Berkeley)

        I think it did in the past for friends, Verizon and t mobile are the only ones represented on this trip

    • Charlie B

      In 1985 lightening killed 2 and critically injured 3 on half dome. Have fun!

    • Tyler Price (Carmel Valley)

      That was from yesterday huh?! That’s one big cloud over Acton!! It’s so big you can see it’s shadow on top of high clouds!

  • Thirstier Nick (Santa Maria)

    Nice day at Warped Tour in Mountain View. Had to refill my water bottle four times throughout the day. Hope this overlong heat wave in Santa Maria is over before I come home tomorrow night. 86 today??? I sure don’t want to be there.

  • Looks like the Low is just chillin off our Coast and spitting clouds our way. Any chance of Storms today?

    • matthew

      Forecast up here is for 80% chance of rain – potentially heavy. Going to get my Saturday hike in right now before I get rained out!

      • Great Winter of 2017 (SMC)

        Really wish I was up there this weekend

  • CHeden

    Light, big-drop rain ATTM here in Cottonwood. Visibility is improved and I can now see Shasta for the first time in over a week. Nothing in the way of lightning last night. All indications are this little band will lift north as the morning progresses, and we’ll be left with a very humid and still 100-ish airmass overhead.
    Waiting for later tomorrow when increased dynamics move in from a weak low pivoting inland near Pt. Arena, when we have an outside chance of something firing up in my vicinity.

    • Pfirman

      I will cross my fingers for you. My eyes are already crossed from relentless weeks of highs in the nineties and above.

    • Craig Matthews

      Are you seeing the potential for elevated convection-nocturnal storms in the North Valley tomorrow evening?

      • CHeden

        The forecast (and my thinking) is leaning that way. All depends on when/where the cold core hits the coast. Based on the continuing convection offshore, this low does have unusually cold air aloft associated with it…which in turn will essentially remove the “cap” once it makes it inland.
        Also, note what appears to be a dry slot trying to form ahead of the low. If the low moves slow enough, the dry slot will be favorably located over NorCal in the aft. to help heat things up before the coldest air moves in overnight (Sunday). We shall see…cautiously optimistic ATTM.

        • Craig Matthews

          Interesting about the dry slot. I recall seeing some very dynamical lines of cells pop up out of nowhere on the edge of a dry slot associated with an upper level Low off the central coast, so this could get real interesting. Side note too, .. I noticed on one of the GFS model runs, that the upper Level Low at the 500mb is projected to have a 576dm for a period of time. Which is favorable for larger size hail associated with terrain induced afternoon T-storms as well, I would think?

          • CHeden

            Excellent point…and I noticed that as well. The projected thicknesses inland have been very erratic in the model simulations, so low confidence ATTM.
            “IF” a closed circulation remains intact with the core as it hits the coast,
            we might be seeing some localized mid-upper level shear as well which could help sustain a hail core in any storms that do fire up. Lot’s to be on the lookout for over the next 36 hrs or so fer sure.

          • Craig Matthews

            For sure! NWS has their hands full with this one. I really think the Northern Mtns up to Trinities have a good chance of strong storms this weekend….will see though.

  • Craig Matthews

    Raining and the sun out at the same time in Cachagua right now. Was very surprised to wake up to this sound of pitter patter. The cloud causing this shower looks like its headed toward PRCountyNative, maybe Tyler’s..

    • PRCountyNative

      You got it! Nice surprise!

  • 82/83 El Nino baby (San Jose)
  • alanstorm

    Last Vegas area got hit hard by Tstorms & subsequent flash floods yesterday.
    Mt Charleston got 2.8″.
    That’s a guarantee of water hurtling down the washes towards town.
    https://www.reviewjournal.com/weather/1-missing-7-rescued-after-flooding-near-las-vegas-strip-video/

  • Craig Matthews

    Had a surprise shower moving through upper Carmel Valley just after 830am this morning. Was a real treat waking up to the sound of large raindrops hitting the roof, and sweet smell. Had enough rain to wet the roads pretty good. https://uploads.disquscdn.com/images/fd31d496047b86db40b664c92a39c3a5224824a247177c0627295735eb2b30d0.jpg https://uploads.disquscdn.com/images/fcf29544732699b32ac8d02b54ec92838d6f7f1347cb3aa6982e28e1e1e6e535.jpg https://uploads.disquscdn.com/images/9801f7abd23404104f215411857262c7ab392d867fafd936f4d2a01e2fb58fc7.jpg

    • PRCountyNative

      That was crazy! No rain for the whole week, then on a sunny day, after the weather is supposedly gone, suddenly it’s raining. The responsible cloud had already departed. About 2 minutes of that great smell.

  • CHeden

    Upper low west of Ukiah continues to generate offshore lightning near it’s core. This low will continue to migrate towards the coast today, with tomorrow bringing in cooler air aloft and increasing dynamics. Looks like the Coast Range will be getting in on the action this time. In the near term, the low is essentially cut off, and as such will have a tendency to wander a bit for the next few days. Can’t be sure if/where convection will break out inland as conditions will be highly variable, but overall chances are decent for something to fire up near/over the north Valley.
    https://uploads.disquscdn.com/images/4754fa55473222298d7c231cafbb8126821058bf442672344c8486ec0d70bdb2.jpg

    • Nathan

      ugh.

    • Craig Matthews

      Wow, now this looks very favorable for elevated convection outbreaks in just about anywhere north of HWY 20, and especially NW CA and the North Valley, aside from the mountains of Norcal. I could see where north Mendocino and Lake Co, Humbolt, up to Del Norte Co could get a big lightning bust out of this set up. And the Shasta-Trinity and far North Valley.

      • CHeden

        Just as long as the cold air aloft migrates far enough inland to destabilize things. If not, then elevated “stratus-quo” in the upper levels will be the rule.

        • Craig Matthews

          Yeah, I agree. I noticed that some of the model runs weaken the Low considerably, into a very weak open wave moving across the North State, which would limit the dynamics.

          • CHeden

            Generically, yes. But I don’t think forcing will be much of a factor with all the heat and moisture in place. All we need is the cooler air aloft to destabilize things. I can live without any closed circulations. Lol!

          • Craig Matthews

            These tend to open wave as they move inland anyway, lol.

    • Great Winter of 2017 (SMC)

      Could we get any convection in the Bay Area, say near San Francisco?

      • CHeden

        IMHO, the North Bay is more likely, as they will be nearer the coldest air aloft. The Bay Area will be seeing more of a dry-ish SW flow, with low clouds limiting surface heating from the low-deck stratus layer. However, that being said, just a 50 mile southward shift in the low’s track would put the Bay Area under a more favorable unstable environment.

  • Great Winter of 2017 (SMC)

    I have a good felling about this upper low, will be interesting

  • Thunderstorm

    This may well be a low like the one in 2008. One that will always be remembered for the smoke.

  • happ [Los Angeles]

    Been watching the British Open this morning. Not because I am a fan of women’s pro golf. But rather the rain showers. Given the dynamics of the past monsoon event any other area other than California would be recording widespread heavy precipitation. Bummer

    This is a shot looking south toward downtown from my neighbor last night nextdoor.com
    https://uploads.disquscdn.com/images/c68f7f909327eea6fdf50ab0ed9ed1d6eaa1876f70ffd3be337695da9f5bc25c.jpg

  • Jason Jackson Willamette

    Slow weather day today, the board is,,, boring. Sigh, guess I’ll go back out to the garage and do something useful, like the WIFE IS ORDERING ME TO DO!!

    Anyone check out what happened overnight in Kansas City? 5 to 7 inches of rain, flooding, due to a training thunderstorm complex that poured for hours. Okay, maybe California summer doldrums aren’t that bad – eh? :^)

    • molbiol

      Sometimes its wise to take a break from obsessing over the weather and looking at the computer models several times a day. I think I might have to block my access to NWS and take the next several days off….

    • Craig Matthews

      Its possible that there were some isolated parts of San Diego Co., and the deserts of Socal that had incredible amounts of rain like that the other day. Though its not as common here, those torrential amounts do happen in isolated mtn-desert areas of this state on occasion….
      Anyway, I’d say its a good day to get those honey-do’s knocked down, but then again we know how that list just never stops growing, lol.

      • DelMarSD

        I’d say there are probably isolated areas of the SD county mountains that received over 3 inches of rain the past week.

  • molbiol

    Excellent analysis by NWS Phoenix (those damn split flow patterns):

    “The synoptic flow pattern for at least the first half of next week
    will be characterized by a vertical stacked anti-cyclone stationed
    over northern Sonora and an eastern Pacific basin Rex-type block.
    The undercutting southern stream jet in this blocking configuration
    will ensure a dry westerly wind component through a large
    atmospheric depth over the CWA. And all model output indicates a
    persistent laminar, anti-cyclonic, and subsident pattern locked over
    the forecast area precluding any chance of storm activity as mixing
    ratios fall below 7 g/kg. Even mountain cumulus build-ups may be
    difficult to come by in this environment. “

  • Taz & Storm Master

    just had some showers

  • rob b-Truckee/East Bay

    Looks like The Sierra has been receiving a steady rain the last hour or so, temp down to a brisk 63 in Truckee. Poor people there for a quick weekend getaway are probably wondering about all the heat everyone was talking about.

  • Nathan

    Seeing strikes within the last hour around Jackson and west of Tahoe, very little soaking rains – definitely not a good recipe.

    • matthew

      Light rain in the shire (eastern Truckee) but have not heard any thunder so far today.

  • Craig Matthews

    Nice cool down this afternoon along the coast and in the lower coastal valleys. West to northwest winds have really picked up the last couple of hours, and temps have dropped a few degrees from earlier this morning in the Carmel Valley Village. The Carmel Valley Fiesta is going on this weekend, so these cooler temps came in just in time.

  • Thunderstorm

    Smokezilla (thats what they call it in the Pacific Northwest) to stick around til late next week. Italy drought continues to worsen.

    • Pfirman

      Gonna have to change the Po to No.

  • Craig Matthews

    Found a REALLY good site-blog in regard to wind flows through the Bay Area, and other places as well ie LA basin. Very cool visual maps of wind flows and eddies are included. Maps show various things such as sea breeze fronts/convergent zones, like the Santa Clara Valley seabreeze front and convergent area around Morgan Hill, that “Chris” has talked about, along with how wind flows through areas of the east bay and eddies around mountains, and coastal eddies and how they affect winds on the coast. Make sure to scroll down through the entire page. West Coast Wind Blog is especially interesting. Enjoy! http://blog.weatherflow.com/

    • Craig Matthews
      • Pfirman

        Did not see the Melta Breeze on there, heh.

    • jstrahl

      Thanks a LOT, does look very useful!

    • Chris

      Thanks big time Craig!
      I’ve never seen this addressed before.

      • Craig Matthews

        I’m so glad I found this site. Glad to see that there are met. folks out there doing this, and putting it out there for the public to be involved.

    • CHeden

      Very cool! Seems quite accurate from what I know first hand…especially for the coastal eddy’s. Thanks a lot fer the link.

      • Craig Matthews

        I figured you’d esp like this one, because of what you know, and your obs over the years of weather-localized wx phenomena and the unique wind flows through the Bay Area. I like how he does, what he calls “weather autopsies”, where he(Mike Godsey) takes a unique weather event and associated unique wind pattern in a particular place of the Bay Area, comes up with a hypothesis, and then dissects the data- both ground obs and aloft, which verifies his theories. Then he makes very detailed visual maps using a google earth-like program, where he imports the windflows onto the topo-like maps, giving us viewers a very good visual of what happened, or what is happening irt the unique windflows of parts of the bay area.

  • Great Winter of 2017 (SMC)

    Same Area day after day near the Southern end of Yosemite and Yosemite as a whole have been pounded by strong to severe thunderstorms and flash floods.

  • Cap’n

    Radar showing yet another day in the Mammoth/Yosemite area of action. Truckee forecast sounds interesting, I’ll get a gauge reading from the cord maiden tomorrow.

    https://uploads.disquscdn.com/images/02b67e54975975daffc767dbdf99ff27e9379418253d7976048a876759c95797.png

    • Charlie B

      One of our weather west friends had a permit for half dome today. I wonder how that worked out. Speaking of that, Cap’n, have you ever done that little hike?

      • Nathan

        hasn’t posted …

      • Andrew (Berkeley)

        We made it to the base of the cables but clouds looked threatening around 11-11:30 so we backed off. Things actually cleared up after that for a bit but we were too far down for a second attempt. Some convection popped over from the east around 3-4, but we were well on the way down by then.

  • Chris

    Bummed to have solid cloud cover all day in Tahoe today.
    Was hoping for big boomers with all the moisture, jet streak, and wind shear.
    Just no ? to destabilize the atmosphere to produce ??????

    • AlTahoe

      We had thunder and about 2 minutes of rain in South shore. It looks like everything will be east of the crest which has been the norm the last 2 years.

  • Charlie B

    Odd day in Graeagle. Cloudy and cool with high no more than 75 (now) after staying in the high 60s most of the day. Periodic sprinkles. The Bernese Mountain Dog “Hobbes” didn’t even jump in the river when we went for a walk. I’d post pics but coverage is bad and my earlier attempts had those annoying gears circulating until they seized. There is something about sitting on a deck in the woods with a cold martini that cannot be beat.

  • tomocean

    Perfectly tropical day in Auburn. Glad of the break in temperature, since my air conditioner fan motor took a nosedive. Even managed a sprinkle or two this morning. The sky this evening reminds me of somewhere in the south Pacific. https://uploads.disquscdn.com/images/45ca67ecf539c8c03d802076770ec0096451bc90526f35d7c2fbd4b0dffc96f0.jpg

    • Pfirman

      Change out those crepe myrtles for palms and you’re gold for the SP.
      I was seeing that same cloud pattern down here and thinking ‘mackerel sky’.

    • Chatman

      The clouds remind me of endless days & nights in the IO…

  • Yolo Hoe

    August has arrived in the lower Sacramento portion of the GCV: one tomato field harvested with the next one ready to go right behind it — amazing chain of seasonally repeating events from genetics to planting to harvesting to processing — a big chunk of California economy that is completely dependent on our unique climate and weather patterns. https://uploads.disquscdn.com/images/1cb04f6b1016a058a17f8ea4a1cb76c89e0375a127cbd2b687dad77cf49eb506.jpg

    • Pfirman

      Was in Dixon for some music and beer at Ruhstaller Brewery tonight and I am happy to say there was a true Delta Breeze there and a gorgeous moon virtually full.
      Just saying, but August arrived four or five days ago, heh.

      • Yolo Hoe

        Yep, really enjoying the Breeze — for a change, it feels like it should

        • Pfirman

          Going by car sensor it was 72 in Dixon around 9p, rose to 74 at Covell / Pedrick Rd. crossing and was 75 in central Woodland. No complaints until I looked at the west facing back deck thermometer and it read 80+.
          What to believe? It felt good.

    • PRCountyNative

      Cannabis is much more forgiving, easy to grow.

      The local mayor, and city council are promising fields of cannabis as far as the eye can see. Citizens firmly on board. Great Salinas Valley.

    • Sublimesl

      And massive water infrastructure and diversions

    • rob b-Truckee/East Bay

      I’ve noticed one of the farms just east of Dixon along 80 has converted to drip irrigation. Good to see some farms making the switch to efficient watering where they can.

      • Pfirman

        Lots of farms have made and continue to make the switch. The amount of plastic underground is enormous and it seems to need replacement after about ten years. I have already seen some fields being rehabbed for new lines. They also have to come out if the field needs ripping.
        So some downside but the upside is huge.

  • Great Winter of 2017 (SMC)

    Anyone have any special insight on if there is any convergent zones near Mount Langley and Whitney or where thunderstorms most often occur in that area of the Southern Sierra. Would love to know this as I am going on Labor Day Weekend to Mount Langley and know if moisture gets in the mix it could be a problem. I would imagine if Mount Langley had a rain gauge it would receive some of the highest rainfall totals in the Sierra because it is the Southern most fourtener in the Sierra and Lower 48. My estimate is they average around 3-7 inches in July and August

  • Feels so great outside! Ready for Fall.

  • annette johnson

    Temperatures will be on the rise-possibly 115’s again, but at least humidity will be down as the monsoon takes a break here along the Colorado River and the desert southwest. Today I had the opportunity to go riding in the Seligman area (elev. 5400ft) in Northern AZ. Temps in the mid 70’s with occasional rain and thunderstorms https://uploads.disquscdn.com/images/cc300731ba613e43bb05361015da576c79898edc41923167bc198179a622b55c.jpg https://uploads.disquscdn.com/images/a4bc91af3c39678556930951b4d6d17847d597f05922851d422412d1236c7ff3.jpg in a
    https://uploads.disquscdn.com/images/1c91cd033f2b9bd4a8b88d98ec4f7b338aed61d8ae7d44e001429cedadf133d7.jpg distance. Life was good today. The raindrops were cold, and things were really green as they have gotten a lot of rain this summer… at least someone did! Oh, and I made a new little friend today. https://uploads.disquscdn.com/images/354cab6d2c4f6cc67b7824d23fc3b1260644ea1e21c6f596d018d388216614fb.jpg

    • sezwhom

      Beautiful Annette. You’ve had an awesome monsoon since about the 2nd week of July I do believe.

      • annette johnson

        It has avoided the Colorado River area for the most part. We have had the humidity and the threat of storms however. It isn’t over yet so I’m still holding out hope!

        • Pfirman

          Like that pony is holding out your hat.

          • annette johnson

            Lol! I think his owner is training him to beg for handouts. (He is actually a four month old colt!)

          • Pfirman

            Wow, smarter than me then at that age.

    • Wolfpack

      The desert southwest is such a beautiful part of the world. If I work my plan I’ll be in Payson, Arizona in just four short years.

      • annette johnson

        I’ve never been there but I know of a few desert dwellers that go there to escape the heat in summer. I hear it’s nice.

    • alanstorm

      That area was my original destination for when I would grow up & “get the hell out of Humboldt” (well, Sedona actually).
      Williams or Flagstaff too.
      Access to carving logs, & a stones throw from 2 of my 3 favorite spots- Sedona & Mojave Desert!
      But Eel River country won…
      Next life I guess…..

      • annette johnson

        I’m sure you don’t have regrets…you are in some beautiful country!

      • annette johnson

        I think you did win…you are in some beautiful country!

    • Fairweathercactus

      I also read that Northwest AZ is also home to some of the largest incest towns in the United States thanks to the churches near Utah.

      • annette johnson

        Actually that would be northeast AZ. Colorado City, near the Utah border. Yes, some pretty weird stuff. I guess no outsiders welcome. They get some good rain up there though!

      • annette johnson

        Edit. You are right, it is northwest AZ. Not sure what I was thinking. It is such a remote area that you have to drive through Las Vegas to get there. It isn’t one of those cities that AZ is proud to call their own.

  • sezwhom

    Well, lookie here. Mid August cool down? EC says so. GFS not so much but GEM is onboard with EURO. I think so. We’re due. https://uploads.disquscdn.com/images/f07740b5dce4b32302848977c1af5fbc3083a63d8efc5f484c46a0e9fd24278d.png

    • Dan weather maniac (ORINDA)

      Ahhhh looks like maybe the first low pressure starting to sag south this season? I’m ready for it. It’s getting to be about that time.

    • MetaGhost (Berkeley)

      Well dang. That low is nearly smack dab over my mid-August vacation in in the San Juan Islands. It can be a bit too cool there at times in the summer.

    • alanstorm

      Please, let it be so

    • Great Winter of 2017 (SMC)

      hopefully hurricane near Baja at that same time to the south so its moisture get be drawn into California

    • Dan the Weatherman

      I wouldn’t be surprised if a storm hits the Pacific NW sometime soon, as it has been abnormally dry up there for the last couple of months (despite being in their “dry” season) and very hot last week. If this happens to verify as shown on the Euro, then much of coastal CA including coastal Socal should even cool down to some extent, and the monsoon would be suppressed temporarily as well.

  • Farmer47

    I realize it’s “crazy talk” this far out but what are the chances of an early fall this year? A few of the guys that work for me say they see a few signs of fall coming early. I have to say that in the past they have been right more times than not. I guess a better question would be are there signs of summer continuing on as normal?

    • Pfirman

      What are the signs your guys see?

      • annette johnson

        That’s a good question. I used to know an ‘ol cowboy that was like a “walking farmers almanac”.

      • matthew

        My dogs have started their fall shedding over a month early, if that counts for anything. Their veterinarian said the same thing about her dog.

        So I am calling cold, but not necessarily wet.

  • Thunderstorm

    Thickest fog yet this summer. Looks like drizzle in the coastal mountains.

  • Chris

    Solid sun in the Tahoe basin today.
    All set for severe weather I’m sure!!!
    Hoping for powerful downdrafts on the southwest shore to produce large (for Tahoe standards) waves at Sand Harbor https://uploads.disquscdn.com/images/fc7de16e42e6530f88d89cb8c644c47068b4e8b594d76735a8ae42407b72080e.jpg

    • Thunderstorm

      Correct you are the cumulus is much lower which means higher vertical development, possibly 40,000ft. If the anvils do not cause to much of a cirrus shield gona be a wild day.

    • AlTahoe

      Looks like all the action will be east of us again today as the nws reno canceled the flash flood watch for tahoe. We might get a couple rumbles of thunder before it blows east. The pine nuts east of Carson will be the big winners today

      • Chris

        BUT the clouds are building BIG on the west shore too!

    • Great Winter of 2017 (SMC)

      Wish I was in Tahoe, never pick the right weekends to go and see tstorms

  • AlTahoe

    Thunder has started here but the storms are going east at a fast clip https://uploads.disquscdn.com/images/3425024b53bc34db629896e08815563f3454b9a47df135c11d34a9f1cfe37073.png

  • Great Winter of 2017 (SMC)

    Here’s the Old Farmer’s Almanac summary for our year and it’s so called “80 percent accuracy”. Last year the forecasted the complete opposite of what happened in most of CA so take this with a grain of salt.
    ANNUAL WEATHER SUMMARY: NOVEMBER 2017 TO OCTOBER 2018

    Winter will be cooler than normal, with rainfall above normal in the north and near normal in the south. The coldest periods will occur from late November into early December and in early February. Mountain snows will be above normal, with the stormiest periods in early to mid-November and early and late January. April and May will be slightly drier than normal. Temperatures will be below normal near the coast and above normal inland. Summer will be cooler than normal, with near-normal rainfall. The hottest periods will be from late May into early June and in mid-June and mid-July. September and October will have near-normal temperatures, with rainfall above normal in the north and below normal in the south.

    • Chris

      The original “fake news”

  • matthew
    • Cap’n

      That snow drift was gone last year, an “average” winter by mid July. I’ve GPSed it at 7,700 I think, not too shabby for August 6th.

      • matthew

        That is the drift between the PCT and Donner Peak. The one on the east side of Judah is still over 4′ in places.

        • Cap’n

          Yep I recognized it, it always reminds me of a big wave. Didn’t look like it shrunk all that much from three weeks ago or so. I bet that trail was crowded today! I’ve been doing Donner Peak via fireroads on south shore lately dodging the dogs.

  • Great Winter of 2017 (SMC)

    A little bit of topic, but a destructive, possibly multi vortex tornado hit Tulsa, Oklahoma yesterday shortly after 1 AM damaging hundreds of buildings. The tornado caused 26 confirmed injuries and will likely receive an EF2- EF3 rating.https://www.stormviewlive.com/image/chat-media/2321.gif

    • Chris

      That’s crazy!
      It’s been many years since we’ve not had a year or at least a season without extremes!
      Here’s to an average winter coming up with some cold spells, some warms spells, a few heavy rain/snow spells, some tule fog, a few gale force winds….. and have a NICE day!

    • Craig Matthews

      …..on earth” That is incredible!!

    • Even in Saudi Arabia and other places in Middle East? I get USA

      • Nathan

        Yeah, not that I doubt that this is the highest recorded month ever, but I’m willing to bet there are consistently hotter places in the Sahara or Arabic Peninsula by fiat of being much further from marine influence – there’s just such sparse WX station coverage that it’s just not recorded.

        • ‘ever recorded on earth’ = hyperbole.

          • It is both literally true and conveys the correct broader context, so I would not call it hyperbole.

          • It does convey the broader context.

            WU is only article I’ve found that goes as far as ‘ever recorded on earth’. It’s exaggerated IMO and I can’t corroborate ‘on earth’ other than USA or western Hemisphere with any other articles with a quick search. It’s interpreted as literally the hottest month ever on earth by more than a few common people.
            I’m picking a nit with the headline.

          • Nathan

            I think the key word is “recorded.”

          • Craig Matthews

            BINGO!

          • Pfirman

            I upvoted you because I could only upvote Nathan once and have it recorded.

          • I would agree that it is certainly not the warmest temperature ever to occur on Earth, since there have clearly been warmer periods in the >4 billion years of Earth history and we don’t have weather records from every point on Earth even for the past century.

            But it really is the warmest monthly temperature “ever recorded anywhere on Earth” where we’ve actually kept direct instrumental records (i.e. a thermometer on the ground), not just North America or the Western Hemisphere. So the precise claim in that article is correct. As I mentioned above, it’s quite likely that the other places on Earth that are plausibly hotter than Death Valley also reached their highest temperatures of the modern era this year, but we just don’t have thermometers on the ground there to know for sure (and thus, I’d argue the context is reasonable as well).

        • Right–there may well be hotter places. But it is an “apples to apples” comparison, since we HAVE been recording in Death Valley for a long time. Most climatologists suspect that some extremely isolated interior portions of the Sahara and/or Saudi Arabia occasionally get to 140F, but there are no reliable records for those regions.

          Incidentally, there is informal evidence that these even hottest places (for which there are no formal records) probably also hit new all-time records in 2017, as nearby (but slightly cooler) sites exceeded 100+ year old values in any month.

          • Nathan

            I’m not challenging or pooh poohing the data whatsoever – I have no doubt that it IS the highest recorded month ever anywhere.

            I’m just pontificating that there probably are hotter places in the Sahara/Arabia because it’s closer to the equator, higher sun angle, valley radiative focusing etc. We just aren’t recording due to remoteness and lack of access.

  • Craig Matthews

    Fog was moving up into Carmel Valley last evening after sunset, which made for some good picture opportunities. In this picture, you can see Jack’s Peak(lower left) sticking above the fog layer, and the lights of Carmel Valley Village down lower-middle, in the picture. https://uploads.disquscdn.com/images/262d1f37bfafa50695df8b16c1829d65ea6117600b2c6f0c4ce03160b1ef510a.jpg

  • Cap’n

    Water temp in Manhattan/Hermosa beach was 74 degrees, good temps for a 2 mile swim in speedos.

    https://uploads.disquscdn.com/images/95ccca16ad31d995bc5f53b506838a6d2e727bc46b5906f7f79c759c5f3ee19c.jpg

    • Pfirman

      Start of some kind of race or are Speedos magnetic?

      • Cap’n

        It’s raining men.

  • rob b-Truckee/East Bay
    • matthew

      Thunder in the shire and a few stray rain drops, but no significant rain yet. Looking at the radar there is enough going on around me that I am sure it will get interesting this afternoon. As I was writing that the wind significantly kicked up…

    • AlTahoe

      I was out at blue lakes and it was sunny with no rain out there. Meyers was dry coming back into town and then right around my house on midtown it looked like things went nuclear. Tons of street flooding and for it to flood this much we must of had at least 2″ of rain. https://uploads.disquscdn.com/images/d61c26ca946a536a84a38864325d23a9557c38f323549fb960611adbe06449fb.jpg

      • Pfirman

        Whoa. Does this happen in August?

        • Yolo Hoe

          Guess those were the build ups

  • matthew
    • Great Winter of 2017 (SMC)

      Where is this in Tahoe?

      • matthew

        Eastern edge of Truckee, aka Glenshire, The Shire, the banana belt. About 5-6 miles east of downtown.

    • rob b-Truckee/East Bay

      Impressive, looks like no action in TD today. Sparks sounds like the have issues with lightning caused fires. One burning near Nothern Nevada MC, they’re evacuating the parking lot and it sounds like preparing if they need to evacuate part of the hospital.

      Quote from the fire commanders-“we have a mile of fire line with an extreme rate of spread.”

      • matthew

        Looks like all hell is breaking loose about 10 miles north of us. We got it good for about 15-20 minutes. First time in months that we have been dust/pollen free.