November 2020 Weather Observations for the PNW

[Jbolin]

1 hour ago, snow_wizard said:

This is pretty abnormal behavior for the early part of a major Nina season.  There are a few like 1916, 1924, and 1964.  Based on this and some other years I've been looking at there two likely scenarios emerging.  One is we continue to see the recurring cold snaps with a climax of a major blast in December.  The other is for pretty much steady cold (with a few breaks of course) through January and probably into February.  If we have the major blast in December the remainder of the winter will probably be relatively mild.  It's as if the big stuff holding off keeps the overall cold regime going.

Thank you

[Blizzard777]

Joined the 32* Club too

[MossMan]

Temp bouncing...was 29 a half hr ago, now back up to 32. 

[Meatyorologist]

Winds have died to nearly nothing. Around 37 right now, but I'd expect that to drop like a hammer very soon.

[Gradient Keeper]

31.6 near West Gresham. My morning low was 34.7.

00z ECMWF in 12 minutes

[Dave]

Mark has chimed in on his thoughts of this upcoming cool and active period.

https://fox12weather.wordpress.com/2020/11/08/cool-november-weather-is-here-to-stay-valley-rain-mountain-snow/

[Jesse]

4 minutes ago, dolt said:

Mark has chimed in on his thoughts of this upcoming cool and active period.

https://fox12weather.wordpress.com/2020/11/08/cool-november-weather-is-here-to-stay-valley-rain-mountain-snow/

Look forward to reading a lot of low key complaining.

[Gradient Keeper]

Just now, Jesse said:

Look forward to reading a lot of low key complaining.

Lol

[SouthHillFrosty]

When was the first snow of 1949-1950 for the lowlands of the pnw?

[Blizzard777]

25 minutes ago, MossMan said:

Temp bouncing...was 29 a half hr ago, now back up to 32. 

Winter canceled 

[Jesse]

Already down to 32 this evening, after a chilly partly to mostly sunny day with light winds. 45/31.

First time this season we've had a clear day and I can see snow on Silver Star and Larch to the east. Sounds like that won't be going away anytime soon.

[BLI snowman]

1 minute ago, SouthHillFrosty said:

When was the first snow of 1949-1950 for the lowlands of the pnw?

2nd week of December had a cold clipper with some light snow.  

Then a sharp but short Fraser River blast December 18-19, which produced a 23F high at Bellingham.

[MossMan]

1 minute ago, Jginmartini said:

Winter canceled 

Up to 35 now!! 

[Gradient Keeper]

00z ECMWF Day 1

[BLI snowman]

I think this is a pretty typical Nina November, really. A wet and active November with a consistent jet aimed right at us is a pretty easy call with a 1st year strong Nina. 1998, 1988, 1973, 1942... all pretty similar. Those years all featured some significant midwinter blocking and arctic air at some point, so it's the general trend you'd want to see to continue towards that path.

[Gradient Keeper]

Day 2

[Gradient Keeper]

Day 2 (Past 4 runs) As with the GFS the cold trough is trying to dig back over us a few notches.

[MossMan]

Back down to 33. 

[Gradient Keeper]

Day 3

[Gradient Keeper]

Day 4

[Gradient Keeper]

Day 5 Hmmm!

 

[Gradient Keeper]

Oh SH**

[Gradient Keeper]

Day 6

[Brian_in_Leavenworth]

6 minutes ago, DJ Droppin said:

Oh SH**

[MossMan]

2 minutes ago, Brian_in_Leavenworth said:

Just a breeze up here. 

[Gradient Keeper]

Day 7

[BLI snowman]

14 minutes ago, DJ Droppin said:

Oh SH**

 

Friday the 13th!

https://komonews.com/weather/scotts-weather-blog/remembering-the-great-friday-the-13th-storm-of-1981

 

[Gradient Keeper]

Day 8 Go away ridge! No ridge November!!!!

[Gradient Keeper]

Day 9'er

[snow_wizard]

OLM already briefly dropped to 24 this evening before recovering slightly to 26.  Their record tomorrow is 23 so I think that could easily fall.

Currently 29 IMBY.

[Brian_in_Leavenworth]

5 minutes ago, DJ Droppin said:

Day 8 Go away ridge! No ridge November!!!!

Not very dry.

[Gradient Keeper]

2 minutes ago, Brian_in_Leavenworth said:

Not very dry.

Yup the ridge is just far enough east. Very wet run!

[Gradient Keeper]

Day 10

[snow_wizard]

1 minute ago, DJ Droppin said:

Day 9'er

Liking the looks of that.  Interestingly...earlier this evening I found that 1924 was one of the La Nina seasons that had a number of early cold snaps.  All of those small cold snaps eventually culminated in one the all time great cold waves for our region.  As an example this is a list of the lows in Landsburg, a place just 5 miles from here.

Beginning with the 16th...13, 3, 0, 4, 14, 23, 6, 7, 7, 8, 10.  That came after 11 inches of snow fell.  I could live with a redux!

[Gradient Keeper]

00z ECMWF 10 Day Rainfall, Snowfall totals

[MossMan]

1 minute ago, DJ Droppin said:

00z ECMWF 10 Day Rainfall, Snowfall totals

Almost in the gray! 

[Jesse]

Impressive to see PDX down to 32 before midnight.

30 here. New low for the day.

 

[Deweydog]

2 minutes ago, Jesse said:

Impressive to see PDX down to 32 before midnight.

30 here. New low for the day.

 

The fisherman was Johnny on the spot!

[Gradient Keeper]

1 minute ago, Jesse said:

Impressive to see PDX down to 32 before midnight.

30 here. New low for the day.

 

and surprising....

[Gradient Keeper]

6z GFS in 2 hours 20 minutes. Night shift?