December 2020 Weather Observations for the PNW

[Gradient Keeper]

6z GFS through Day 10 a huge NOPE! What does it mean? Not much.

[Gradient Keeper]

6z GEFS is fairly chilly. Not bad. Much better than 00z.

[Requiem]

Strange lull in winds at PDX, but looks to be picking back up. Gradient holding strong.

[Gradient Keeper]

1 minute ago, Requiem said:

Strange lull in winds at PDX, but looks to be picking back up. Gradient holding strong.

Definitely no lull here. Wind is raging very loud and it is difficult to sleep.

[The Blob]

The wind has been off and on. Still not strong enough to make the house creak.

[Gradient Keeper]

Wind woke me up again. Some gusts sounds like a jet roaring over the house. I love this stuff! I was out in my driveway around 1-1:30 AM watching my trees and it's a bit eerie when I can hear the wind building 1/4 mile away to my east and then the roar gets louder and louder. Fun stuff.

12z GFS in 2 hours 36 minutes

Good runs coming this morning!

[Gradient Keeper]

Okay. WOW. Biggest gust yet and loudest in several years. That was incredible!

[Requiem]

3 minutes ago, DJ Droppin said:

Wind woke me up again. Some gusts sounds like a jet roaring over the house. I love this stuff! I was out in my driveway around 1-1:30 AM watching my trees and it's a bit eerie when I can hear the wind building 1/4 mile away to my east and then the roar gets louder and louder. Fun stuff.

12z GFS in 2 hours 36 minutes

Good runs coming this morning!

H-triple R says strongest widespread winds are still to come. Regardless they’ve kicked back up here.

[Gradient Keeper]

5 minutes ago, Requiem said:

H-triple R says strongest widespread winds are still to come. Regardless they’ve kicked back up here.

That last gust just now 4:57 AM was incredible! Easily 50-55mph. I haven't heard anything like that since the big 2014 Veteran's Day east wind storm. WOW. I wasn't expecting that.

[The Blob]

More wind!

[Gradient Keeper]

5 AM PDX-DLS now -10.9mb ... C'MON just a bit more! Going to try to attempt to sleep again.

[Meatyorologist]

Dead calm here, just like usual during east wind events. 32F.

[Requiem]

Every once in a while these huge gusts surface here in the west hills— something fell on the roof just a few moments ago.

[Requiem]

It’s rather loud, I must say.

[Gradient Keeper]

6:09 AM Yep, woke me up again. It has ramped up another notch! Wow. PDX-DLS now -11.5mb! Super sleepy off to try again.

[TT-SEA]

Nice 51-degree morning... I could hear the wind at times overnight but it did not seem unusually strong here.

[jakerepp]

34 and calm here.

[TigerWoodsLibido]

32F with some freezing fog and calm. Good morning errbody.

[TT-SEA]

00Z EPS...

 

[TigerWoodsLibido]

 

4 minutes ago, TT-SEA said:

00Z EPS...

 

500mb

[The Swamp]

3 minutes ago, TT-SEA said:

00Z EPS...

 

31 here in the swamp Tim.  The easterly flow must be compressing and giving you some heating.

 

I have stared at that animation you posted and I can't find any retrogression.  Maybe I just need to stare harder?  Looks like a situation where all the cold air dumps into the upper midwest and east as is usually the case.

[FroYoBro]

Things stayed mixed here and it basically stayed at 46 degrees the entire night. Breezy, but not like Labor Day. 

[TT-SEA]

8 minutes ago, puyallupjon said:

31 here in the swamp Tim.  The easterly flow must be compressing and giving you some heating.

 

 

55 on Squak Mountain in Issaquah.

Lots of low 50s across the east side of the Seattle area... mixed in with some low 30s in wind protected places.   

[The Swamp]

4 minutes ago, TT-SEA said:

 

55 on Squak Mountain in Issaquah.

Lots of low 50s across the east side of the Seattle area... mixed in with some low 30s in wind protected places.   

you gotta love the diversity

[Rubus Leucodermis]

A clear and frosty 28˚F this morning.

[Blizzard777]

Sitting at my low currently 36*

2 mph gust from the North!  WhooooHoooo! 

[Rubus Leucodermis]

Does not seem to be a whole lot of fog out there. Yeah, some stations are reporting it, but they are distinctly a minority. Just does not seem to be a cold and foggy “fake cold” inversion situation, at least not yet.

[Chewbacca Defense]

6 minutes ago, Rubus Leucodermis said:

Does not seem to be a whole lot of fog out there. Yeah, some stations are reporting it, but they are distinctly a minority. Just does not seem to be a cold and foggy “fake cold” inversion situation, at least not yet.

Crystal clear at my location, we've been bouncing around 30-31.  Some very white roofs this morning (and yesterday morning for that matter).  

[umadbro]

Probably tonight through Saturday or Thursday night through Saturday is when the fog will start to get going.

[Skagit Weather]

Haven't managed a freeze up here for a long time (only had one in November). There's been just enough wind here this morning to keep us bouncing between 33F and 36F. Although it is quite frosty outside.

[Rubus Leucodermis]

13 minutes ago, Chewbacca Defense said:

Crystal clear at my location, we've been bouncing around 30-31.  Some very white roofs this morning (and yesterday morning for that matter).  

It’s definitely been overperforming on the radiational cooling here. Forecasts have been calling for lows in the mid-30’s. I’ve beat that by about 7˚F this morning. Not a complete surprise, as inversions are tough to model and my area for some reason tends to be something of a cold spot.

[TT-SEA]

19 minutes ago, Rubus Leucodermis said:

Does not seem to be a whole lot of fog out there. Yeah, some stations are reporting it, but they are distinctly a minority. Just does not seem to be a cold and foggy “fake cold” inversion situation, at least not yet.

First visible satellite pics show very little in the way of low clouds or fog... and the models have been showing weak systems cutting through the ridge on Thursday and Saturday which will probably keep things a little better mixed as opposed to just a solid ridge parked on top of us.

 

[SilverFallsAndrew]

Down to 28 at SLE on the 5 minute obs. GFS continues to show a decent shot of rain across W Oregon this weekend.

[TT-SEA]

1 minute ago, SilverFallsAndrew said:

Down to 28 at SLE on the 5 minute obs. GFS continues to show a decent shot of rain across W Oregon this weekend.

Yeah... I doubt we are settling into a cold inversion situation at all with systems like this cutting through the ridge and increasing wind in all areas.  

 

[Chewbacca Defense]

8 minutes ago, Rubus Leucodermis said:

It’s definitely been overperforming on the radiational cooling here. Forecasts have been calling for lows in the mid-30’s. I’ve beat that by about 7˚F this morning. Not a complete surprise, as inversions are tough to model and my area for some reason tends to be something of a cold spot.

If I remember correctly you are in the Cordata area, and yeah that area gets cold.  In the "pre-Covid" era I would play soccer at WCC on the weekends in the fall/winter and it usually feels colder than at my house.  I play keeper, so I don't get to run around as much, those north wind events up there are BRUTAL!

[FroYoBro]

Down to 45 here!

[SilverFallsAndrew]

2 minutes ago, TT-SEA said:

Yeah... I doubt we are settling into a cold inversion situation at all with systems like this cutting through the ridge and increasing wind in all areas.  

 

We wouldn’t want that!

[Rubus Leucodermis]

1 minute ago, Chewbacca Defense said:

If I remember correctly you are in the Cordata area, and yeah that area gets cold.  In the "pre-Covid" era I would play soccer at WCC on the weekends in the fall/winter and it usually feels colder than at my house.  I play keeper, so I don't get to run around as much, those north wind events up there are BRUTAL!

I am. The general character of the land here is flat and open. My theory is that the open part facilitates nighttime radiational cooling and the flat part means the resulting cold layer tends to pool instead of readily draining down a slope. So even though it's more of a low plateau than a valley where cold air would more obviously pool, cold air still tends to pool here. And yes, we are in Fraser Outflow Central when the winds blow.

[TacomaWaWx]

Had steady north winds last night...only dipped down to 40 this morning. 

[TigerWoodsLibido]

Still at 33F but got in a freeze overnight for #20 on the cold weather season.