Sunday, January 25, 2009

Sunday Morning Update


The air above us is now cold enough for snow...and there are a few light flurries going on now as the final bands of showers from the passing weather disturbance move through (see figure). Last night some locations received 1/4 to 1/2 inch (a few slightly more)..particularly at higher locations in the North Sound. And as I mentioned last night, the model's definitely underplayed it. Cooler, drier air is now moving through the Fraser River Valley. Take a look at the surface chart (attached)..strong NE winds (20 knots sustained) at Bellingham Airport..with a temp of 27 and a very dry dewpoint of 2F! If you want to get a better idea of the winds go to the Ferry Weather Web page (http://i90.atmos.washington.edu/ferry/Ferryjs/mainframe1.htm) and click on the San Juan Island close up map...winds of 25-30 kts are found at some locations.

The sky has opened up in Bellingham and clearing will move southward slowly during the day. Light snow is still falling over portions of central and southern Puget Sound and will do so until midafternoon. Expect temps to drop into the 20s and teens Monday AM--so protect those vulnerable plants.
Several of you have mentioned the issue of snow on Tuesday, when the next disturbance comes in, with cold air in place. Temps will warm rapidly as the associated front approaches and there should be considerable rain shadowing from Seattle northward. So it is possible that some locations will initially see some snow (particularly south Tacoma) that will turn to rain. More on this tomorrow. But we will have a sunny day on Monday, with a high around 40F first...and no air pollution.

16 comments:

Brian said...

Hey Cliff, quick question. What do the extremely long range forecasts say? Like in to February and such? Above normal precip and below normal temperatures I hope. Thank you :)

Anonymous said...

Hey Cliff,

Slight dusting of snow here in Coupeville. Temp is right at 32 deg 10:00 AM.

Good job with your forecast.

Bill

Anonymous said...

Yes, I keep telling my family that we're going to have a big snow the first week of February. Just a hunch - but I'd sure like to be right! What do you think, Cliff? Thanks for the fun site!

Jessica said...

The most minescule sized flakes are floating around our neighborhood - not sticking - just dreamily lofting about. (east side of lake union, at lakes edge)

Anonymous said...

We have about an inch of snow on our grass. (Sammamish)

I wish we had our own weather person. I live in tweener territory....not Seattle and not the true foothills. Most of what is said on this blog doesn't really apply to us, and neither does the foothills weather report.

Anonymous said...

The weatherman on King said that the snowshould wind down at 10:00 am. Its still snowing here in north redmond/woodinville area. there must be something wrong with the forecast. We have about an inch of snow. I am traveling on tuesday. Hopefully all of this will not affect my travel.

Anonymous said...

1pm, west bellevue.
Snow now looks like real snow (not the dandruff looking occasional stuff from earlier).

Fun, i guess

CherryCherryBoomBoom said...

I'm in North Bellevue, and it started snowing a while ago. The snow has picked up in the last 30 min. or so.

cp said...

It's been snowing in North Seattle for a little over an hour it started really light, and now it's much more.

Anonymous said...

From a look at the radar it looks as if the snow is becoming more widespread. I thought it was supposed to die down. - 1:00PM

Anonymous said...

Snowing at a good rate in West Seattle now. Starting to re-accumulate on top of the dusting last night.

CatPat said...

West Seattle near Lincoln Park: snowing harder than it has since this all began last night -- not that it's all that much. The air is full of little tiny flakes, blowing sideways toward the west. No accumulation...although I'm hoping!

Big Sven said...

Almost 2pm, snow coming down reasonably hard 800' up Squak Mt in Issaquah. Doesn't seem to be letting up- models wrong *again*?

Anonymous said...

1:45pm Duvall 32 degrees
Bigger, fluffier flakes are falling now! Hurray! The street is bare, but everything else has a nice white coating. I wonder how long it will keep up. Still wondering about this weeks extended forecast!

Brian said...

NWA updated their forecast saying the snow should continue to go until at least 4 P.M. They said local accumulations of up to an inch are possible, but seeing as though we already got more then that up on Union Hill in Redmond, I think we're going to get more then that.

Snow has been going ever since I got up basically and at a steady rate. When I look down onto the bark, I can see the snow sticking. But I don't see any further accumulations since last night on the roads or trees, or grass for that matter. We'll see how long it goes. Who wants to bet that it lasts until at least 7 P.M.? I'm sure thats all the NWA people are doing right now. ;)

Ashley said...

It's almost 3pm here in the Hollywood Hill area of Woodinville and the snow is still coming down. We have about 2+ inches where I'm at. We must be in a micro climate, what happens out my window hardly ever jives with the forecast.