December 2015 in the Pacific Northwest

[Snowman5678]

That is encouraging. You live in Bothell?

Nope, I live in between Redmond and Duvall. temp of 39 here with a dp of 32. Doesn't look like i'll do too well here. Seems like dp's are lower to my north and south. Betting on just cold rain here, maybe a mix. 

[Deweydog]

Timing is better though and a slightly cooler airmass. 12z GFS shows a healthy amount of precip. Still will be pretty tough to reach the 32 degree miracle mile.

Timing could help a little. That one has a higher bust potential moisture side though.

[Alex_Snakes]

Must be very light. Roads are still dry south of SEA.

 

http://s8.postimg.org/z71c7r5dx/005vc14379_1.jpg

Rain/snow in Tacoma by the narrows.

[BLI snowman]

Timing could help a little. That one has a higher bust potential moisture side though.

 

Yeah, and sadly dry air advection between now and Tuesday evening looks pretty limited so it'll be a setup that's pretty reliant on some decent (>0.05") per hour precip rates to cool us down a bit. We'll see, looks more promising on recent runs though.

[MossMan]

Snowing and blowing!

[FroYoBro]

All the way up to 39 and moderate precip. is still a ways away. 

[TT-SEA]

Temp 36, dp 24 here. Radar showed precip coming over me about an hour ago but nothing falling yet. If you squint your eyes, tilt your head, stick your tongue out and shake your leg you can see some very fine light flurries.

 

Could also be my snow-deprived mind playing tricks on me. Who knows.

 

 

Low dewpoint there.   

[Deweydog]

Funny how the wettest month on record may end up bookended by two majestic rex blocks.

[MR.SNOWMIZER]

Snowing at my moms In port orchard. 34 there and elevation 300ft.

[Snowman5678]

Holy crap guys! I went to go let the dogs out and it's RAINING! And chunky rain at that! I bet the roads will be chaos soon. Haha however I was surprised to see that it was raining considering webcams were relatively dry. 

My place tends to do relatively well with marginal situations but that hasn't been the case so far this winter. Places at lower elevations saw better stuff than we did earlier in the week. Interesting for sure.

[seattleweatherguy]

12z ECMWF still shows some snow over the next 24 hours. Most of this falling between hrs 6-18 with a little after that.

Interesting even places where it's raining currently it's showing snow for later

[Snowman5678]

Temp 36, dp 24 here. Radar showed precip coming over me about an hour ago but nothing falling yet. If you squint your eyes, tilt your head, stick your tongue out and shake your leg you can see some very fine light flurries.

 

Could also be my snow-deprived mind playing tricks on me. Who knows.

Like Tim said, low DP. Where in Carnation are you? Are you east of town or west? (if you don't mind me asking). I know the hills east of carnation get really high up but i'm not sure if Tolt hill gets that high too.

[snow maniac]

Radar is showing snow over me but all we are getting is a slushy mix that keeps trying to turn to all snow. If only I was a few hundred feet higher.

[TT-SEA]

Funny how the wettest month on record may end up bookended by two majestic rex blocks.

It was just perfect timing for December to be the wettest month. Slide this forward or back a week and it's just a wet period preceeded and followed by blocking periods.

[BLI snowman]

It was just perfect timing for December to be the wettest month. Slide this forward or back a week and it's just a wet period preceeded and followed by blocking periods.

 

Not true here. It takes a lot for PDX to get 15" of rain in a few weeks or see 25 consecutive days with measurable rain. Not a run-of-the-mill pattern. 

[MossMan]

Really snowy and quite windy! Not sticking but temp is down to 35 from 38 a half hr ago.

[Jesse]

Funny how the wettest month on record may end up bookended by two majestic rex blocks.

 

Weather can be sexy that way sometimes.

[TT-SEA]

Light snow here and almost no wind. Dry snow for now.

[Deweydog]

Weather can be sexy that way sometimes.

Downright pornographic.

[Jesse]

[SilverFallsAndrew]

Downright pornographic.

Some people find this weather obscene. They are weather prudes.

[Gradient Keeper]

7:00 AM Friday. East wind much? Talk about an extremely tight/strong PDX-DLS gradient! East wind event/storm east of I-205/Gorge likely. 12km Time-Height has 50kt wind barbs. The first WRF run to show this. Could be 55kts on the 4km.

 

http://www.atmos.washington.edu/mm5rt/data/2015122712/images_d2/slp.123.0000.gif

 

http://www.atmos.washington.edu/mm5rt/data/current_extended/images_d2/kpdx.x.th.gif

[MossMan]

Temp down to 34 and my dp continues to fall...now at 24? Snow continuing!

[MossMan]

Snow coming down hard, slush now on deck and truck. 34.1 degrees, dp 24.

[Timmy]

Snow still falling, about 1" new.

[TT-SEA]

Snow coming down hard, slush now on deck and truck. 34.1 degrees, dp 24.

 

 

Not fair... 34 here with a dewpoint of 29.   How can it be so much lower there?

[TT-SEA]

Snow still falling, about 1" new.

 

 

Is that your house?   Very nice area.

[Poulsbo Snowman]

Snowing in Poulsbo!  First time in 3 years!  Ya--freaking--hooooo!

 

I don't even care if it sticks or not. 

 

I lied.  I want it to stick.  And it looks like it's trying to now.  And there's a long fetch of moisture to work with so this might go on for a bit.  Go ahead on wet bulb cooling!

[Timmy]

Is that your house?   Very nice area.

yes sir, thanks

[MossMan]

Not fair... 34 here with a dewpoint of 29. How can it be so much lower there?

I don't know, baffled myself unless my weather station is not accurate. Started early this morning with a dp of 30 but has been declining ever since. I figured it would have climbed when the precip started to meet the lowering temp but that isn't happening. Just got a report from the lake house which is a little higher than my house and it's sticking there. Heading over there in a few to watch the game.

 

Edit: I just looked out again, grass turning white and heavy snow. Temp down to 33.

[ShawniganLake]

I don't know, baffled myself unless my weather station is not accurate. Started early this morning with a dp of 30 but has been declining ever since. I figured it would have climbed when the precip started to meet the lowering temp but that isn't happening. Just got a report from the lake house which is a little higher than my house and it's sticking there. Heading over there in a few to watch the game.

 

Edit: I just looked out again, grass turning white and heavy snow. Temp down to 33.

Seems like the dew points can vary widely with home stations.  There is another Davis station that's a few blocks from my house, and it often reads much lower humidity. 

[MikeInEverett]

An actual rain/snow mix in Snohomish now. I can actually see some fat flakes mixed with the rain.

[TT-SEA]

Snow picking up here... still looks like a dry snow swirling in a light east wind.

[antipex]

Light snow just started here blowing in breezy east wind. They're small dry-looking flakes reminiscent of what I've seen in Central Oregon.

[SilverFallsAndrew]

Radar shows precip over my area, but nothing falling right now. Currently 34 degrees.

[Snowman5678]

Was up at the grocery store a couple miles down the road that is at about 575ft versus my 550ft. All snow there, meanwhile here its just a mix with mainly rain. A station near the store is reporting 38.6 with a dp of 31, meanwhile here its 38.1 with a dp of 34. I have no idea why our dp's have been continuously higher than the whole area around us.

[Snowman5678]

I'm on Tolt Highlands just a little east of Carnation, not to be confused with Tolt Hill to the west of Carnation.

 

Tolt Highlands is the long, windy, gravel hill off Entwhistle.

Oh okay, gotcha! I always figured that area would be pretty good for snow too.

[MossMan]

This was a few minutes ago, coming down harder now and sticking to the driveway.

[TT-SEA]

Moderate snow here now.    Radar show no break in the precip.   I would imagine as long as it keeps going now it will stay snow here.

[SilverFallsAndrew]

This was a few minutes ago, coming down harder now and sticking to the driveway.

 

Nice!