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PNW January 2023 Observations and Discussion


Requiem

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1 minute ago, Gradient Keeper said:
Day 8 boring ridge drifts over us with slow moderating. Hopefully the next few days we'll see a change with an undercutting system for snow!
500h_anom.na.png

I don’t hate it. We d see cold nights and slow moderation during the day. 

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Snowfall                                  Precip

2022-23: 95.0"                      2022-23: 17.39"

2021-22: 52.6"                    2021-22: 91.46" 

2020-21: 12.0"                    2020-21: 71.59"

2019-20: 23.5"                   2019-20: 58.54"

2018-19: 63.5"                   2018-19: 66.33"

2017-18: 30.3"                   2017-18: 59.83"

2016-17: 49.2"                   2016-17: 97.58"

2015-16: 11.75"                 2015-16: 68.67"

2014-15: 3.5"
2013-14: 11.75"                  2013-14: 62.30
2012-13: 16.75"                 2012-13: 78.45  

2011-12: 98.5"                   2011-12: 92.67"

It's always sunny at Winters Hill! 
Fighting the good fight against weather evil.

 

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Had 42/32 today. Cloudy all day and nice.

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Springfield, Oregon regular season 2023-24 Stats:

  • Coldest high: 25F (Jan 14, 2024)
  • Coldest low: 20F (Jan 14, 2024)
  • Days with below freezing temps: 24 (Most recent: Mar 8, 2024)
  • Days with sub-40F highs: 4 (Most recent: Jan 16, 2024)
  • Total snowfall: 0.0"
  • Total ice: 2.25”
  • Last accumulating snowfall on roads: Dec 27, 2021 (1.9")
  • Last sub-freezing high: Jan 15, 2024 (27F)
  • Last White Christmas: 1990
  • Significant wind events (gusts 45+): 0

Personal Stats:

  • Last accumulating snowfall on roads: Dec 27, 2021
  • Last sub-freezing high: Jan 16, 2024 (32F)
  • Last White Christmas: 2008
  • Total snowfall since joining TheWeatherForums: 42.0"
  • Sub-freezing highs since joining TheWeatherForums: 4

 

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A reminder the euro and gem are likely way too aggressive with those 850mb temps in this range. 

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Snowfall                                  Precip

2022-23: 95.0"                      2022-23: 17.39"

2021-22: 52.6"                    2021-22: 91.46" 

2020-21: 12.0"                    2020-21: 71.59"

2019-20: 23.5"                   2019-20: 58.54"

2018-19: 63.5"                   2018-19: 66.33"

2017-18: 30.3"                   2017-18: 59.83"

2016-17: 49.2"                   2016-17: 97.58"

2015-16: 11.75"                 2015-16: 68.67"

2014-15: 3.5"
2013-14: 11.75"                  2013-14: 62.30
2012-13: 16.75"                 2012-13: 78.45  

2011-12: 98.5"                   2011-12: 92.67"

It's always sunny at Winters Hill! 
Fighting the good fight against weather evil.

 

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5 minutes ago, Gradient Keeper said:

Day 9'er

500h_anom.na.png

That’s like a 45/22 day at SLE. Not bad. 

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Snowfall                                  Precip

2022-23: 95.0"                      2022-23: 17.39"

2021-22: 52.6"                    2021-22: 91.46" 

2020-21: 12.0"                    2020-21: 71.59"

2019-20: 23.5"                   2019-20: 58.54"

2018-19: 63.5"                   2018-19: 66.33"

2017-18: 30.3"                   2017-18: 59.83"

2016-17: 49.2"                   2016-17: 97.58"

2015-16: 11.75"                 2015-16: 68.67"

2014-15: 3.5"
2013-14: 11.75"                  2013-14: 62.30
2012-13: 16.75"                 2012-13: 78.45  

2011-12: 98.5"                   2011-12: 92.67"

It's always sunny at Winters Hill! 
Fighting the good fight against weather evil.

 

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1 minute ago, Phishy Wx said:

this D**n thing is going to end trending as cold as the December shot, or at least close

Depends on the metric. This outbreak as progged will not have Omak advecting to near 0. Not even close.

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My preferences can beat up your preferences’ dad.

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Just now, Deweydog said:

Depends on the metric. This outbreak as progged will not have Omak advecting to near 0. Not even close.

seems to maybe be coming from a different trajectory? I know over here we get coldest when our blast comes down the Purcell trench from the NE, not from the North that gets Omak coldest.

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Just now, Phishy Wx said:

seems to maybe be coming from a different trajectory? I know over here we get coldest when our blast comes down the Purcell trench from the NE, not from the North that gets Omak coldest.

Yeah, this is a direct-to-basin event. I wouldn’t call it a straight up backdoor event, although it is more likely to morph into that in the next couple days compared to something more north/south. As opposed to the last several events, teleconnections with this are ripe for the short wave to expand and dig directly over us.

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My preferences can beat up your preferences’ dad.

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Could definitely be some teens west side though 

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Snowfall                                  Precip

2022-23: 95.0"                      2022-23: 17.39"

2021-22: 52.6"                    2021-22: 91.46" 

2020-21: 12.0"                    2020-21: 71.59"

2019-20: 23.5"                   2019-20: 58.54"

2018-19: 63.5"                   2018-19: 66.33"

2017-18: 30.3"                   2017-18: 59.83"

2016-17: 49.2"                   2016-17: 97.58"

2015-16: 11.75"                 2015-16: 68.67"

2014-15: 3.5"
2013-14: 11.75"                  2013-14: 62.30
2012-13: 16.75"                 2012-13: 78.45  

2011-12: 98.5"                   2011-12: 92.67"

It's always sunny at Winters Hill! 
Fighting the good fight against weather evil.

 

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I'm thinking if the cold setup is short lived the chances are high we will get hit again later in Feb.  SSW will probably reap benefits later on.

This ECMWF isn't too bad though.  Stays pretty chilly with an inversionary type pattern after the big cold shot.  A little bit of snow in there after the cold is in place as well.

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Death To Warm Anomalies!

 

Winter 2023-24 stats

 

Total Snowfall = 1.0"

Day with 1" or more snow depth = 1

Total Hail = 0.0

Total Ice = 0.2

Coldest Low = 13

Lows 32 or below = 45

Highs 32 or below = 3

Lows 20 or below = 3

Highs 40 or below = 9

 

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1 minute ago, JW8 said:

Looks like this may be a waste of cold air (for snow fans). Real bummer 😔

No matter what I'm thrilled to see a legit cold pattern in late January.  I'm going to enjoy the cold!

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Death To Warm Anomalies!

 

Winter 2023-24 stats

 

Total Snowfall = 1.0"

Day with 1" or more snow depth = 1

Total Hail = 0.0

Total Ice = 0.2

Coldest Low = 13

Lows 32 or below = 45

Highs 32 or below = 3

Lows 20 or below = 3

Highs 40 or below = 9

 

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Still a chance this thing will get extended over the next couple of days too.

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Death To Warm Anomalies!

 

Winter 2023-24 stats

 

Total Snowfall = 1.0"

Day with 1" or more snow depth = 1

Total Hail = 0.0

Total Ice = 0.2

Coldest Low = 13

Lows 32 or below = 45

Highs 32 or below = 3

Lows 20 or below = 3

Highs 40 or below = 9

 

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The December thing was extremely unsatisfying, so I hope we can squeeze out a little snow and a few days of cold lows from this.

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Snowfall                                  Precip

2022-23: 95.0"                      2022-23: 17.39"

2021-22: 52.6"                    2021-22: 91.46" 

2020-21: 12.0"                    2020-21: 71.59"

2019-20: 23.5"                   2019-20: 58.54"

2018-19: 63.5"                   2018-19: 66.33"

2017-18: 30.3"                   2017-18: 59.83"

2016-17: 49.2"                   2016-17: 97.58"

2015-16: 11.75"                 2015-16: 68.67"

2014-15: 3.5"
2013-14: 11.75"                  2013-14: 62.30
2012-13: 16.75"                 2012-13: 78.45  

2011-12: 98.5"                   2011-12: 92.67"

It's always sunny at Winters Hill! 
Fighting the good fight against weather evil.

 

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2 hours ago, Doinko said:

Mark Nelsen's thoughts

 

Screenshot_20230124_205356_YouTube.jpg

That's pretty cold but I'm not sure I would call 10-15F extreme cold. Probably just because we've had that already in EWA. Then again if the temp or wind-chill is below 15F at the school's weather station they have inside recess.

 

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Garfield County/Pomeroy, WA:

2023-2024 Snowfall totals: 14.3 inches

HIghest snow total (per event): 5.8 inches total 1/11/24 - 1/12/24.

Most recent accumulation (non trace): 0.20 inches on 2/26/24

Days with  trace or more snowfall: 12/01/23 (0.60), 1/8/24 (1.0), 1/10/24 (3.5), 1/11/23 (3.5 inches with Thundersnow; separate event from prior day), 1/12/24 (2.30). 1/14/24 (T), 1/17/24 (1.20 inches), 1/18/24 (1.5 inches), 1/19/24 (0.20), 2/09/24 (0.30), 2/26/24 (0.20-mainly graupel)

First Freeze: 10/27/2023

Last Sub freezing Day: 1/20/24 (12th) (8 days in a row from 1/12/24-1/20/24)

Coldest low: -12F (!!!!!!!!) (1/12/24)

Last White Christmas: 2022 at my location (on ground)

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43 minutes ago, Gradient Keeper said:

Day 9'er

500h_anom.na.png

Anyone else see an Eagle in this image?

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Garfield County/Pomeroy, WA:

2023-2024 Snowfall totals: 14.3 inches

HIghest snow total (per event): 5.8 inches total 1/11/24 - 1/12/24.

Most recent accumulation (non trace): 0.20 inches on 2/26/24

Days with  trace or more snowfall: 12/01/23 (0.60), 1/8/24 (1.0), 1/10/24 (3.5), 1/11/23 (3.5 inches with Thundersnow; separate event from prior day), 1/12/24 (2.30). 1/14/24 (T), 1/17/24 (1.20 inches), 1/18/24 (1.5 inches), 1/19/24 (0.20), 2/09/24 (0.30), 2/26/24 (0.20-mainly graupel)

First Freeze: 10/27/2023

Last Sub freezing Day: 1/20/24 (12th) (8 days in a row from 1/12/24-1/20/24)

Coldest low: -12F (!!!!!!!!) (1/12/24)

Last White Christmas: 2022 at my location (on ground)

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12 minutes ago, LowerGarfield said:

That's pretty cold but I'm not sure I would call 10-15F extreme cold. Probably just because we've had that already in EWA. Then again if the temp or wind-chill is below 15F at the school's weather station they have inside recess.

 

That's cold for the west side.

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Death To Warm Anomalies!

 

Winter 2023-24 stats

 

Total Snowfall = 1.0"

Day with 1" or more snow depth = 1

Total Hail = 0.0

Total Ice = 0.2

Coldest Low = 13

Lows 32 or below = 45

Highs 32 or below = 3

Lows 20 or below = 3

Highs 40 or below = 9

 

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2 minutes ago, Gradient Keeper said:

I'm not sure. Top left? ....

Night Shift 6z GFS in 1 hour 59 minutes

Haha sorry it's a sports reference with the 49ers playing the Eagles for the NFC Championship. Thank you for sharing the run with us 

Garfield County/Pomeroy, WA:

2023-2024 Snowfall totals: 14.3 inches

HIghest snow total (per event): 5.8 inches total 1/11/24 - 1/12/24.

Most recent accumulation (non trace): 0.20 inches on 2/26/24

Days with  trace or more snowfall: 12/01/23 (0.60), 1/8/24 (1.0), 1/10/24 (3.5), 1/11/23 (3.5 inches with Thundersnow; separate event from prior day), 1/12/24 (2.30). 1/14/24 (T), 1/17/24 (1.20 inches), 1/18/24 (1.5 inches), 1/19/24 (0.20), 2/09/24 (0.30), 2/26/24 (0.20-mainly graupel)

First Freeze: 10/27/2023

Last Sub freezing Day: 1/20/24 (12th) (8 days in a row from 1/12/24-1/20/24)

Coldest low: -12F (!!!!!!!!) (1/12/24)

Last White Christmas: 2022 at my location (on ground)

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4 minutes ago, snow_wizard said:

That's cold for the west side.

I like snow best. But I'm becoming more and more of a cold lover these days. I still like the house to torch inside in the winter.

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Garfield County/Pomeroy, WA:

2023-2024 Snowfall totals: 14.3 inches

HIghest snow total (per event): 5.8 inches total 1/11/24 - 1/12/24.

Most recent accumulation (non trace): 0.20 inches on 2/26/24

Days with  trace or more snowfall: 12/01/23 (0.60), 1/8/24 (1.0), 1/10/24 (3.5), 1/11/23 (3.5 inches with Thundersnow; separate event from prior day), 1/12/24 (2.30). 1/14/24 (T), 1/17/24 (1.20 inches), 1/18/24 (1.5 inches), 1/19/24 (0.20), 2/09/24 (0.30), 2/26/24 (0.20-mainly graupel)

First Freeze: 10/27/2023

Last Sub freezing Day: 1/20/24 (12th) (8 days in a row from 1/12/24-1/20/24)

Coldest low: -12F (!!!!!!!!) (1/12/24)

Last White Christmas: 2022 at my location (on ground)

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32 minutes ago, ShawniganLake said:

Not sure if this was mentioned and im like 10 pages behind.  But the JMA was rather gfs like for the middle of next week, with bitter cold over BC and N Washington and an active storm track plowing into Oregon. 
 

326EE7B6-9925-4D46-BF27-7664B9684273.gif.39e8e2c5e0301cdfb016a4e95881caf1.gifDFC98E90-37F0-4B39-81C0-6F991398D2A3.gif.6582a5f659f4ca8261c0a057f3228e76.gif

That would be awesome. Very snowy for PDX.

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So while this isn’t a true SSW, the PV will be taking body blows and weakening steadily over the next 2 weeks. So the pattern will likely improve next month.

And ironically it was the crappy January pattern which helped produce the wave activity fluxes responsible for the W1 response/early demise of the vortex.

So yes, there are benefits to the Aleutian low pattern! Often times it’s the progressive +PNA type patterns that produce the best upward wave driving from the NPAC conduit, which ends up disrupting the vortex and bringing about a colder pattern down the road.

4CFA2699-1372-4739-9A6E-51AEE1D485B5.gif

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50 minutes ago, Christensen87 said:

CFS has been consistently over it after the warmup by next weekend 😭

If the CFS is predicting a blowtorch, all the more reason to expect a cold pattern. That model is literally useless. Serves no purpose at all.

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