December 2015 in the Pacific Northwest

[Deweydog]

Just went for a quick walk. Yes! It is beginning to stick to the barkdust, grass and cars. Temp down to 35.

It's sticking to everything at 651 feet.

[TT-SEA]

Would that be more precip than what we are getting now?

 

 

For you down there... yes.   Looks quite wet.    Absolutely nothing for the Seattle area.  

[Jesse]

It's sticking to everything at 651 feet.

 

I climbed up that foot stool and you would be correct!

[Jesse]

It turned to snow here at a pretty warm temperature. Knew some good stuff was happening just above me. 

 

Yeah, it changed over at 36.5 or so here. I am actually surprised at how much it's accumulating considering it's still 34.9. It continues to steadily drop though. About 0.2 degrees every several minutes or so it seems.

 

Looks like moderate precip could hang around for the next hour or more, so that's good news.

[Perturbed Member]

For you down there... yes.   Looks quite wet.    Absolutely nothing for the Seattle area.  

 

You're talking about today and not Tuesday right?

[Snowman5678]

Back to a mix with the lighter precip. down to 35.

[SilverFallsAndrew]

Moderate snow coming down now. Starting to stick on the car and the other few surfaces that weren't already snowcovered. 

[Perturbed Member]

It really wouldn't have to get a whole lot colder here for this to stick, it actually looks like proper snow now and not the wet stuff. If we could get some steady moderate precip like this outside of peak heating hours it might be interesting.

[Jesse]

It really wouldn't have to get a whole lot colder here for this to stick, it actually looks like proper snow now and not the wet stuff. If we could get some steady moderate precip like this outside of peak heating hours it might be interesting.

 

This time of year "peak heating" probably ends by 2pm or so. Hopefully we can hold onto precip for a few more hours.

 

This precip area seemed to hang over the Coast Range for several hours this morning, so maybe now it will hang over the metro for awhile.

[Perturbed Member]

HIO now reporting snow.

[Jesse]

HIO just officially switched to snow.

 

Coming down pretty good here. Starting to get a decent coating on the yard and plants, cars, etc. Will try to get a few pics in the next little bit.

[Perturbed Member]

This time of year "peak heating" probably ends by 2pm or so. Hopefully we can hold onto precip for a few more hours.

 

This precip area seemed to hang over the Coast Range for several hours this morning, so maybe now it will hang over the metro for awhile.

Yeah, I'm kind of impressed that such a marginal airmass can actually produce straight snow during the day at my elevation.

 

Hoping we can hold on to these precip rates for a while longer and we get that precip this evening that the euro shows.

[TT-SEA]

Down to 30.9 here with a dewpoint of 29.    But precip looks to be letting up soon.

 

[Snowman5678]

Driving from Carnation to Redmond and it seems elevation is playing a huge role in snow vs. rain. Halfway down my hill, changes to rain/snow, valley is rain, Novelty Hill is snow, Redmond is rain.

 

Amazing how just halfway down my hill, about 200ft difference, it goes from all snow to more-or-less all rain.

Yeah, happens all the time. So many times when I was kid we'd drive down novelty and as soon as you starting going downhill past 208th there would be no snow while we'd have 5" up at 550ft. 

 

Was all snow up here earlier but it actually changed back to all rain here with the lighter precip. Snow is trying to mix back in again with some heavier returns overhead. Same strength as the ones that had all snow so im not sure why its not all snow, temp is lower than before. 

 

Something seems to be wrong with my station because its now saying the dp is 8 with humidity at 30%.

 

 

[luvssnow_spokane]

Go Hawks!

[Perturbed Member]

HIO has cooled to 34/32, pretty encouraging.

[TT-SEA]

Just achieved a perfect temperature for accumulating snow and now its getting much brighter here.

[FroYoBro]

It has actually turned to more of a rain/snow mix even though the temperature is lower. 

[Perturbed Member]

34F here now, big flakes coming down. Just need to drop another degree ..or two 

[MossMan]

Snow has stopped. An overachieving day in my book though, accumulating snow, needed 4wd to get to the lake house...and all I was really expecting was some rain/snow mix.

[Snowman5678]

Back to snow here. Of course when a heavier band is about to move out. Time to go run errands in Redmond in the cold rain. 

[luvssnow_spokane]

Still just light sprinkle/drizzle here no changes the last few hours.

[Perturbed Member]

It has actually turned to more of a rain/snow mix even though the temperature is lower. 

 

I'm actually now getting the same thing. 34F and there is some rain mixed in now. Warming somewhere aloft maybe.

[SilverFallsAndrew]

I'd say in about an hour things will start to lighten up on the west side. 

[Timmy]

Moderate snow in Scappoose 60'

[SilverFallsAndrew]

I'm actually now getting the same thing. 34F and there is some rain mixed in now. Warming somewhere aloft maybe.

 

The upper levels will only continue to cool. Its either some WAA on the backside of the precip band or just lower precip rates. 

[FroYoBro]

I'm actually now getting the same thing. 34F and there is some rain mixed in now. Warming somewhere aloft maybe.

Yep. Basically all rain now.  <_>

[FroYoBro]

The upper levels will only continue to cool. Its either some WAA on the backside of the precip band or just lower precip rates. 

 

Definitely not the precip rates. Must be a pocket of warmer mixed air at the mid levels somewhere. 

[BLI snowman]

Snow is very precip rate dependent right now. It's been pretty light here thus far at 250' and I'm getting straight rain.  It'll continue to switch back and forth if/when precip picks up.

[Perturbed Member]

Yep. Basically all rain now.  <_>

 

Yep, like 80% rain here now. 

[MR.SNOWMIZER]

Still snowing at sea level nrar port orchard. Pretty surprised at that

[Perturbed Member]

The upper levels will only continue to cool. Its either some WAA on the backside of the precip band or just lower precip rates. 

Currently have pretty strong precip rate so don't think it is that. I know we will continue to cool aloft but the question is if there will be any precip left by the time we are cool enough? If we have some steady-moderate precip this evening it might do it. The initial precip was delayed by many hours so will it hang out here a bit longer too?

[snow maniac]

Been snowing since 10 am everything is white, and still snowing hard.

[FroYoBro]

Back to big wet snowflakes. Pretty awesome looking. Still not even close to sticking. 

[Bham_Guy]

Snow/rain mix in Bellingham. Temp around 35.

[SilverFallsAndrew]

Temp keeps dropping here too. Down to 33, but it just switched completely over to rain here at 1600'

[Perturbed Member]

Radar doesn't look all that impressive, will this precip really last into the evening? 

[TT-SEA]

Radar doesn't look all that impressive, will this precip really last into the evening? 

 

 

ECMWF says still good precip over all of the Portland area from 4-7.

[FroYoBro]

Down to 37 with a rain/snow mix at PDX. You think they will get reported SN out of this?  Stay tuned in to find out. 

[BLI snowman]

33 at SPB and 32 at HIO. Definitely could see some accumulations out there in the next few hours.

 

36 with a wet mix here at the moment.