December 2023 Weather in the PNW

[Cascadia_Wx]

1 hour ago, MWG said:

It was a nice xmas day and still not knowing what was going to happen on that first week of January 2017.

Southern Oregon pre-firmageddon. We didn’t even know how good we had it…

[Ken in Wood Village]

It could be my first sub 40 degree temperature since I got my weather station. I can see why it's so cold in my area. Crown Point is sitting at 34 degrees. 

[Cascadia_Wx]

1 hour ago, AlTahoe said:

That was a good one. Snowiest Dec in Tahoe history. Christmas night 2021 

When was the last time a non-historic weather event happened in the Tahoe basin? Seems like it’s been an historically long time.

[TigerWoodsLibido]

Beautiful Christmas 2023. Truly memorable 54F with moderate rain. Good to see the weeds and overwintering hornets doing well 

[the_convergence_zone]

45 minutes ago, TigerWoodsLibido said:

Wow we really have gone longer than anyone else in the PNW without snow on Christmas Day.

Am I the only one on here without any Christmas Day snow pics? I’m such a loser.

2017 was the last white Christmas in Seattle 

[SilverFallsAndrew]

Christmas sucks this year.

[Slushy Inch]

1 minute ago, TigerWoodsLibido said:

Beautiful Christmas 2023. Truly memorable 54F with moderate rain. Good to see the weeds and overwintering hornets doing well 

There are no hornets in pnw

[AbbyJr]

3 hours ago, Phil said:

Definitely better wave driving. Stronger polar block better coupled to stratospheric W1 response.

Result TBD.

Any chance we could still get a wave-2/split?

[the_convergence_zone]

48 minutes ago, Phil said:

Hmm.

https://x.com/ryanmaue/status/1739182864405598498?s=46&t=656Z973wLtGKaIyhhq_7QQ

PNAS is where you publish when you know your work won’t hold up to the scrutiny of a real climate journal. 

[TigerWoodsLibido]

9 minutes ago, the_convergence_zone said:

2017 was the last white Christmas in Seattle 

1990 was the last one here…back during the ol’ George HW Bush administration. Pre-Gulf War too.

[TigerWoodsLibido]

11 minutes ago, SilverFallsAndrew said:

Christmas sucks this year.

I got some good Texas Rangers World Series champions gear. At least that curse got broken this year!

[Cascadia_Wx]

1 minute ago, TigerWoodsLibido said:

1990 was the last one here…back during the ol’ George HW Bush administration. Pre-Gulf War too.

You literally had like 10” of snow the day after Christmas two years ago

[the_convergence_zone]

Looks balmy this week followed by a slightly below normal week to begin January. 

[SnowWillarrive]

14 minutes ago, the_convergence_zone said:

2017 was the last white Christmas in Seattle 

Many areas outside Seattle proper had a white Christmas in 2021

[TigerWoodsLibido]

8 minutes ago, AbbyJr said:

Any chance we could still get a wave-2/split?

NGL that sounds like a synthesizer patch with a detuned sawtooth waveform and a rhythmic LFO.

[Rubus Leucodermis]

16 minutes ago, TigerWoodsLibido said:

1990 was the last one here…back during the ol’ George HW Bush administration. Pre-Gulf War too.

On the plus side, however, there is no better locale for scoring a Christmas 60-burger.

[Phishy Wx]

 

 

 

[Phishy Wx]

1 hour ago, RentonHill said:

  

this will happen because I will be in CA

[TigerWoodsLibido]

4 minutes ago, Rubus Leucodermis said:

On the plus side, however, there is no better locale for scoring a Christmas 60-burger.

We’ve been blessed with several this Dec. Plenty of good t shirt and shorts weather days.

If one wants to move to the PNW and enjoys excessive warmth and the ability to often be the warmest location in the region, look no further than Eugene/Springfield.

[Phishy Wx]

27 minutes ago, the_convergence_zone said:

PNAS is where you publish when you know your work won’t hold up to the scrutiny of a real climate journal. 

that dude is such a fraud, although I posted an article last week from a journal saying there is a link to Volcanic activity and SSWs

[Cascadia_Wx]

3 minutes ago, TigerWoodsLibido said:

 

3 minutes ago, TigerWoodsLibido said:

We’ve been blessed with several this year too. Plenty of good t shirt and shorts weather days.

If one wants to move to the PNW and enjoys excessive warmth and the ability to often be the warmest location in the region, look no further than Eugene/Springfield.

You’re kinda sneaky about it, but you’re straight up one of the biggest trolls on this forum some days

Edited December 25, 2023 by Cascadia_Wx

[MWG]

1 hour ago, TigerWoodsLibido said:

Wow we really have gone longer than anyone else in the PNW without snow on Christmas Day.

Am I the only one on here without any Christmas Day snow pics? I’m such a loser.

Well I don't have any from where I live in Medford this was at Ashland, the road that leads to Mt. Ashland to be exact. I missed the snow that happened in xmas eve 2021 since we were in California. 

[Phil]

28 minutes ago, the_convergence_zone said:

PNAS is where you publish when you know your work won’t hold up to the scrutiny of a real climate journal. 

That’s not true.

[Phil]

8 minutes ago, Phishy Wx said:

that dude is such a fraud, although I posted an article last week from a journal saying there is a link to Volcanic activity and SSWs

He’s a PhD climate scientist and his views are relatively mainstream.

The doomsayers you worship are loud on social media but are a minority in the climate science community.

[SilverFallsAndrew]

Wow. This is truly awful. 

[Phishy Wx]

better late than never I suppose.  a white Boxing day

 

ISSUED: 2:05 PM DEC. 25, 2023 – NATIONAL WEATHER SERVICE

...WINTER WEATHER ADVISORY IN EFFECT FROM 4 AM TO 10 AM PST
TUESDAY...

* WHAT...Mixed precipitation expected. Total snow accumulations up
to one inch and ice accumulations around a light glaze.

* WHERE...Cheney, Moscow, Worley, Hayden, Potlatch, Davenport,
Downtown Spokane, Coeur d'Alene, Plummer, Spokane Valley,
Rockford, Fairfield, Post Falls, Genesee, and Airway Heights.

* WHEN...From 4 AM to 10 AM PST Tuesday.

* IMPACTS...Plan on slippery road conditions.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

[Slushy Inch]

Nice druncle run on Christmas at least.

[Meatyorologist]

5 hours ago, Phil said:

Can’t snow if it’s too warm.  

Actually…thermally, your climate is already “borderline” compared to the majority of the US. You guys you would likely be the first to bite the dust. And I’d probably join you very soon after.

Don't know about that one... Despite KSEA's climate warming by ~1.5F, our average annual snowfall has increased by a few tenths of an inch from the 1981-2010 normals.

I think the logic behind what you're saying is that since most of our snowfall occurs between 32-35F, marginal increases in temperature will boost snow levels in the region (that are often already tenuously balanced around sea level) by hundreds of feet, leaving millions with rain or unproductive wintry precipitation.

I've heard that argument used often, and it always sounds wrong... Our region's common snowfall type feels less like an incedental occurence of happenstance, and more related to a fundamental property of our natural typology.

When snowing without direct Arctic influence, temperatures seem 'magnetized' to ~32-33F, instead of 'luckily settling around 32-33'. There are two general scenarios in which we recieve marginal snowfall; also comprising of 90% of our region's lowland snow budget; them being overruning warm fronts, and postfrontal convective environments. My running guess is that these snowfall methods settle just above freezing due to latent heat absorbtion as falling precipitation melts. Without the aid of continential cold/dry air, there's little to influence the sfc environment to cool past 32F, but with latent heat absorbtion, there is an incredible amount of cooling happening inside the melting layer.

Warming the Earth will probably marginally increase the amount of time it takes for latent heat to cool us down to the freezing level in those situations, as well as slightly reduce the frequency and duration of these events, since we'd be starting from a slightly higher T/Td overall in every situation. But since the melting layer in our current climate already extends well past the Earth's surface, we probably only stand to lose 5-10% on both fronts, and endure a meaningless loss in annual snowfall. (Though I will admit, concrete-related UHI is doing a lot of damage to marginal snow prospects within the metro area.)

As for where our annual snowfall averages are headed in the long term? Well right now it's pretty evident that stochastic Arctic snowstorms have more leverage on our annual snowfall than the steady slight downward trend in marginal events. Yeah, it sucks to miss out on a collective 8" of marginal snowfall over the course of a decade. But when you make all that up in six hours during an Arctic overrunning event, and then do the same thing a week later for no good reason, then do that same thing again for three of the next four winters, it doesn't really matter all that much..

[MossMan]

9 minutes ago, Slushy Inch said:

Nice druncle run on Christmas at least.

It’s coming while my relatives in Minnesota fry, perfect! 

[Meatyorologist]

8 minutes ago, MossMan said:

It’s coming while my relatives in Minnesota fry, perfect! 

Tim is about to climb down your chimney in a soggy Santa suit wailing on about how they will NOT in fact be roasting.

[Rubus Leucodermis]

28 minutes ago, SilverFallsAndrew said:

Wow. This is truly awful. 

Rain and mid forties Fahrenheit on Christmas Day! That just never happens in the Northwest. It’s horrible!

[Meatyorologist]

Getting an appreciable easterly gale here in Buckley. Rain is coming down in sheets.

[Cascadia_Wx]

1 minute ago, Meatyorologist said:

Getting an appreciable easterly gale here in Buckley. Rain is coming down in sheets.

How is the Kristmas Ketamine Klinic out there treatin ya?

[Slushy Inch]

19 minutes ago, MossMan said:

It’s coming while my relatives in Minnesota fry, perfect! 

Oh this frame deteriorated faster than you can say El Niño.   

[SilverFallsAndrew]

Horrific GFS run. 

[Phishy Wx]

1 minute ago, SilverFallsAndrew said:

Horrific GFS run. 

the worse the better when it comes to that garbage model

[Anti Marine Layer]

20 minutes ago, SilverFallsAndrew said:

Horrific GFS run. 

It's El Nino. What can you expect up there?

[Slushy Inch]

Should be worth getting out the skis at least. Surprised by quality of this run, though it is warmer in B.C.  Alaska ridge underwhelming.

[Slushy Inch]

Could pull of a miracle slushy inch with cool onshore flow. Maybe a pscz.

[iFred]

53 minutes ago, Meatyorologist said:

Getting an appreciable easterly gale here in Buckley. Rain is coming down in sheets.

You're in my stomping grounds. White River was always that one school that would cancel for wind, close half way through the day in anticipation for afternoon snow, and try to send out buses during an ice storm.