December 2020 Weather Observations for the PNW

[TT-SEA]

More extensive area of low clouds on the east side of the mountains this morning... the only low clouds on the west side appear to be a small area around Eugene. 

 

[TT-SEA]

We reach the earliest sunset of the year on Monday.... its always nice when it stops getting dark earlier every day.   And the following Monday we begin moving in the other direction with the sunset getting later.    The sunset is 11 minutes later by the end of the month.   Meanwhile the sunrise keeps getting later through the end of the month offsetting the later sunset in terms of total daylight.  

[snow_wizard]

Pretty insane temps here this morning. 30 at 1am, 55 at 6am, and now 40 at 9:30.  I can't ever recall the east wind starting and stopping so fast before.

Nice to see the 12z GFS is colder with next week's trough.  850s of -7 now.

[Skagit Weather]

35 minutes ago, Jginmartini said:

Another freeze this morning to add to my tally of freezes since October.

October....2 freezes

November....4 freezes

December....4 freezes thus far ( I see a pattern developing here, will December be 8 freezes?).

Currently dead quiet out and 33*

16 in January and 32 in February!!!

On the other hand here we've had 4 in October, 4 in November, and 2 so far in December (although many of those have been very close with a 32.3F and a 33.1F not included in that total). Hopefully that doesn't mean we don't have 4 every month until the end of the winter...

[Jesse]

53 minutes ago, SilverFallsAndrew said:

Geez, I apologize, now Tim has to completely ruin the forum for everyone else for the next 48 hours. Why don't you go watch Jake Tapper. 

Apology not accepted. He'd been so delightfully quiet the last few weeks.

[FroYoBro]

7 minutes ago, TT-SEA said:

We reach the earliest sunset of the year on Monday.... its always nice when it stops getting dark earlier every day.   And the following Monday we begin moving in the other direction with the sunset getting later.    The sunset is 11 minutes later by the end of the month.   Meanwhile the sunrise keeps getting later through the end of the month offsetting the later sunset in terms of total daylight.  

I like the dark. 

[Jesse]

Low of 36 here this morning, even without fully decoupling. The outflow has been getting colder as the basin cold pool becomes more established.

[snow_wizard]

We've now had three consecutive good GFS extended runs for late Dec / early Jan.  That is only run on the 0z runs.

[TT-SEA]

5 minutes ago, Jesse said:

Apology not accepted. He'd been so delightfully quiet the last few weeks.

Wish I could say the same for you.   

[Jesse]

5 minutes ago, FroYoBro said:

I like the dark. 

I'm always sad when we move past the shortest days in the winter and the longest days in the summer. Both extremes are sort of interesting, especially as you move into our latitude and higher.

[Blizzard777]

17 minutes ago, Skagit Weather said:

16 in January and 32 in February!!!

On the other hand here we've had 4 in October, 4 in November, and 2 so far in December (although many of those have been very close with a 32.3F and a 33.1F not included in that total). Hopefully that doesn't mean we don't have 4 every month until the end of the winter...

February icebox!!! 

[snow_wizard]

The 12z GFS has a really good look at the end.  Kind of looking like it often does before the hammer drops.

[Jesse]

Not a bad looking GFS run by any stretch. 

[Canadian guy]

9 minutes ago, snow_wizard said:

The 12z GFS has a really good look at the end.  Kind of looking like it often does before the hammer drops.

A lot of cold air in the Yukon and Alaska at the end of the run.

[TigerWoodsLibido]

Weatherbell is struggling again...

[Jesse]

Low of 39 at PDX with the wind keeping up all night.

Looks like VUO was calm enough last evening to sneak another freeze in just after midnight.

[umadbro]

I see a few grown adults are gonna act like petty children today. Seems like a good idea to avoid the forum today.

[Blizzard777]

Here comes the next disturbance....time to go out and enjoy what clear skies are left! 
 

37*

[TigerWoodsLibido]

38F and a beautiful day so far. A few high clouds to the west.

[TT-SEA]

12Z ECMWF looks pretty warm and wet by next weekend. 

[SilverFallsAndrew]

1 hour ago, TT-SEA said:

Not sure what Andrew averages there.

Our average is probably around 50 inches... but that is a blend of years with very little snow and years with 100+ inches of snow.  

Since I have lived here my average is 34.3" a year. 

[Brian_in_Leavenworth]

2 minutes ago, TT-SEA said:

12Z ECMWF looks pretty warm and wet by next weekend. 

Not that warm, especially by Sunday, as it shows even the lowlands of Eastern Washington getting snow.   Not particularly cold though either.

[TT-SEA]

3 minutes ago, Brian_in_Leavenworth said:

Not that warm, especially by Sunday, as it shows even the lowlands of Eastern Washington getting snow.   Not particularly cold though either.

The WB maps were stuck on Thursday last I checked.   I was looking at the upper air pattern which looks pretty warm to me... even on Sunday.   And the 500mb pattern looks like it will be wet.

[TigerWoodsLibido]

 

EC ensemble not out yet.

[TT-SEA]

21 minutes ago, Brian_in_Leavenworth said:

Not that warm, especially by Sunday, as it shows even the lowlands of Eastern Washington getting snow.   Not particularly cold though either.

WB maps updating again... pretty warm and wet on this side next weekend.   Highs in the low to mid 50s with two major rain events.   

[snow_wizard]

The ECMWF looks like much better things are ahead at the end of the run.  The PNA forecast shows it finally going minus on the last day also.

Yet another day there are 60 degree readings in the lowlands today.  That is likely to be answered during a Nina season.  I'm pretty envious of Portland going into cold (or at least chilly) outflow now.

[MossMan]

Might need to put shorts on soon. Up to 57! 

[Brian_in_Leavenworth]

31 minutes ago, TigerWoodsLibido said:

 

EC ensemble not out yet.

Here it is.

[TigerWoodsLibido]

1 minute ago, Brian_in_Leavenworth said:

Here it is.

It seems that weathermodels.com gets its data a bit quicker than the others.

[Brian_in_Leavenworth]

Looks to be a little better than last nights EPS

Last night:

 

Todays:

[El_Nina]

Stayed breezy all night, only made it down to a mild 41. Now 48 and clear skies. 

[TT-SEA]

12 minutes ago, MossMan said:

Might need to put shorts on soon. Up to 57! 

I have been wearing shorts outside all week.   

[Weather1011]

2 minutes ago, TT-SEA said:

I have been wearing shorts outside all week.   

Lol

[kokaneekidz]

3 hours ago, Phil said:

Aren’t you at like 1700ft?

I would ASSume he is around 900'ASL

[Brian_in_Leavenworth]

Here is the CMC ensemble mean.

 

[SilverFallsAndrew]

Salem hit 26 this morning. 

[TT-SEA]

12Z EPS... the week of Christmas coming into view now and there is some potential.  

[Gradient Keeper]

1 minute ago, TT-SEA said:

12Z EPS... the week of Christmas coming into view now and there is some potential.  

Yeah Day 10 looks ripe with promise once the trough kicks out back east.

[kokaneekidz]

Overall the progression of things just appears haphazard and quite bizarre. I hope this is all just a glitch in the models for the time being. Better results in the near future

[TigerWoodsLibido]

Last frame on WB