Wednesday, July 29, 2009

Update

I don't know if I have ever seen temperatures rise this fast around here before. We had very warm air aloft and a very shallow inversion above the surface. This inversion was rapidly mixed out by surface heating and the easterlies aloft...thus, the rapid temp rise. Some of the warmest temps are in the foothills (e.g., North Bend) due to the downslope flow off the Cascades. In fact, with offshore flow the foothills can be the warmest locations in the whole region. The north Sound is much warmer today (now 93 in Everett)

Probcast (www.probcast.com) is back up....the power outage on campus is over. I bet it was heat related (it was a transformer failure)

Sea-Tac actually went down last hour (93 to 90), as weak northwesterlies reached the airport. If the temps continued to rise at the rate they were going we would have been 120F today. So the pause is expected...don't worry, it will start up again next hour.

55 comments:

Chris said...

99 in Enumclaw at 11:15 AM

Denise said...

There were beautiful anvil-shaped thunderheads over the Snoqualmie Valley and the Csacde foothills last night. This has been the case every evening this week. Thunderheads with no thunder or rain, what gives?

Michael Goss said...

There's been plenty of thunder and rain, it's just been stuck up in the mountains!

Kevin Purcell said...

The (rooftop) weather station on to of the SAAM in Volunteer Park, Seattle, WA just hit 100.0F at 11:27am.

http://www.wunderground.com/weatherstation/WXDailyHistory.asp?ID=KWASEATT110

Yikes.

Denise:

Take a look at the radar in the evening and you'll find those thunderheads are over the crest of the Cascades (convergence clouds). You can see they're at the county boundaries shown on the radar)

Hot air rising up both east and west slopes and the converges together to give an updraft above the ridge line. They're the only place seeing any real precip. NWS discussion even commented on that yesterday.

Another weather feature mentioned in Cliff's book :-)

jorge said...

And KBFI was down most of last evening as well. 3-day history shows no updates between 22:53 28 Jul and 08:53 29 Jul.

http://www.wrh.noaa.gov/mesowest/getobext.php?wfo=sew&sid=KBFI&num=72

Melinda said...

It's about 11:50 a.m. and I'm looking at Cliff's post saying it's 93 in Everett. I'm in Everett and it's 80 here. ???

sermonti.anthony@leg.wa.gov said...

It's getting quite hazy in Olympia. KOLM METAR is reporting 6 miles in haze. Is this related to air stagnation?

Does this tend to slow down afternoon heating?

Kevin Purcell said...

jorge: The obs were taken but they're not on the NWS site for some reason (comms issues?)

You can find them if you use the UW decoded obs service

http://www.atmos.washington.edu/~stoves/td.cgi

for KBFI.

All the obs are there including 0553z to 1753z on Jul 29 (to convert your local times to UTC).

Jim DiPeso said...

91 in the shade here in Shoreline.

superdeluxe said...

95.9F at Parkland, Washington at 11:57am.

Scott K said...

Here in Lake Stevens it hit around 90 at about 9:15am this morning.

Talking about fast rising temps. My girlfriend and I were watching the temp gauge right around 9:15. We watched it rise 3 degrees in 5 minutes. It went from 90 to 93 in 5 minutes or less.

I would never have expected the temps to rise that fast.

I'm hoping we get to at least 100 today, although the rising temps slowed down a lot, hopefully Cliff is correct and the temps start going up again.


TIP: To stay cool, put some ice in from of a fan. This is the poor-man's Air Conditioning. It's working great so far in my home office which yesterday reached 95 inside my house. Right now it's around 85.

Chris said...

85 and cloudy in Ellensburg. 10+ degrees cooler than the west side, wow...

cary_collins said...

I am in Maple Valley and I don't have a thermometer, but it feels quite a bit cooler to me today than yesterday. We have had steady breezes all morning up to the current time and some puffy clouds blocking the sun. So not too bad.

Tom said...

Can we get an eta on some precip, Cliff? I'm seeing some unfriendly 10 day forescasts...

Tom said...

Can we get an eta on some precip, Cliff? I'm seeing some unfriendly 10 day forescasts...

JewelyaZ said...

Bellevue's Phantom Lake Elementary's official reporting station shows 100.0F as of 12:15. The overnight low there was 71. Holy cow.

MaggieNo said...

99 in the shade at 12:30 p.m. in our backyard, north end of Capitol Hill, elevation 217 feet.

Picnicking in Dreamland said...

99.5 in the shade in Seattle. Good grief. Bon Jovi. 99 in the Shade!

ninaf said...

12:27PM <@nina> 97.2 °F
12:27PM <@nina> it goes up like two degrees every 10 minutes
12:27PM <@nina> something is screwy

A minute later I see your post.... heh.

Picnicking in Dreamland said...

There are actually clouds over the sun at the moment. Where did they come from?

cary_collins said...

No joke, Google Weather is currently showing it 108 degrees in Maple Valley at 12:43. I think there is something screwy with their thermometer.

superdeluxe said...

98.2 at Parkland, Wa
12:41pm
per Wunderground

cornbread said...

I see an even 104 in the shade on my deck In Maple Valley. The warm winds have died down, but the lake has lots of stuff off the fir trees floating around.

The closest Weather underground site to me says 108.9.

Joseph Ratliff said...

Weather.com backed off their original forecast of 102 for a high in Lacey WA (98503)...to what is now 100 for a high for today...and also backed off tomorrow's forecast at the same time, from 98 to 96.

It's 12:51 pm and they show 94 for my zip code.

Joseph Ratliff said...

Another side note...I looked at Wind forecasts for tomorrow on Weather.com...and they predict a West/Southwest wind ... isn't that a little onshore flow?

Here's to hoping :)

Josh said...

Slung the temprature here in downtown bellingham(Sling psychrometer)93deg Little breez trying to pick up-but not much...

Yummi

13:00hrs

Kevin Purcell said...

Volunteer Park had a blip at 12:27pm which took the temp back to 99F with the wind swinging from E to N.

SInce reversed and back to the E wind with 100F temps.

That compressed flow from the east really is giving that extra bump.

Seatac again is getting some cooling Puget Sound breeze and some clouds.

29 Jul 12:53 A Few Clouds 96 61 32 W 8

Lindsey said...

Officially, it's basically mid-90s down the I-5 corridor in WA even as far as Kelso, so things have pretty much "evened out." Wonder if we'll now see a slow and steady march up in temps . . .

mainstreeter said...

Yes, the west side foothills are getting the compressed air

Packwood, 101° gusts to 19 RH 23%

Emumclaw 100°

Troutdale and The Dalles 99° with gusts to 21 RH 27 and 22%

cary_collins said...

Google Weather now has Maple Valley at 1:12 p.m. at 94 degrees, which I would say is pretty accurate. It was 109 degrees about 15 minutes ago.

Chris said...

At 1:15PM it is just hitting 100 degrees 3 blocks south of Woodland Park Zoo. My car thermometer said 100 degrees in Ballard.

I jumped in the kiddie pool and feel much cooler!

Scott K said...

Lake Stevens just hit 100f about 1 o'clock. It's roughly 100.2 right now, still climbing.

superdeluxe said...

100.00F at Parkland, Wa
1:18pm
wunderground

Steve Snyder said...

AgWeatherNet is showing Woodinville the hottest place in the whole state right now: http://weather.wsu.edu/

evilzenscientist said...

104 in shade in downtown Issaquah right now. Hot.

Steve Snyder said...

Woodinville at 102!

Weather Is My Life said...

99... one more degree to tie. If it hasn't gotten to 100 already between hours. Amazingly it is doing this with a WNW breeze off the Sound.

Nancy said...

105 at the top of the hill in View Ridge at 2:00 p.m.-- my thermometer and my neighbor's!

Rod in Seattle said...

at 2:30 it's 101.3 in the shade on Boylston Ave & Union St.

Kelsie said...

Power just went out in Monroe for about 30 minutes. Thermometer currently says 104.

stark said...

95 at Bellingham airport at 1:53 p.m., only up one degree from an hour earlier, after rising three or four degress per hour all day.

another mom said...

104 in the shade near Bitterlake in Seattle

Archimedes' Bubblebath said...

SeattlePI.com has called it - we broke the record at 102!

Lindsey said...

102 at Boeing Field.

Lindsey said...

There it is: 101 at Seatac!!

Jim DiPeso said...

Now 96 in the shade in Shoreline. Cat's sprawled out on the kitchen floor; never seen him this lethargic.

Beth said...

Wunderground has the 98125 zip as 106.2

JewelyaZ said...

Official Weather Service number at Sea-Tac now stands at 100.9.

http://weather.noaa.gov/weather/current/KSEA.html

jorge said...

94.4 here in Crown Hill. Light moderating breeze. 15:00 29-Jul-2009

AJ said...

The higest temps I've experienced was a blast of 120 in far NW San Antonio, TX in September of 2000.

It was about 103 degrees at our normal temperature peak of around 3pm but suddenly, this wicked wind from the west (our version of a wind from the east) blasted in and the temp jumped up.

Humidity plummeted at the same time, thankfully.

Steve Scolnik said...

Sea-Tac reported 101 at 3 pm.

Lindsey said...

"As long as we're already this hot," blah blah, temp wise, I'd like to see the record broken by at least two degrees, making it that much more difficult to break.

Rod in Seattle said...

Ok, at 3:30 it's 102.7 on Boylston Ave at Union St. The portable air conditioner is going full blast and keeping it a relatively comfortable 81 inside.

JV said...

just saw on komo4 that 103 was reached at SeaTac so that is the new record!

superdeluxe said...

104.7 Parkland, Wa
5:14pm
wunderground.