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December 2020 Weather Observations for the PNW


Omegaraptor

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We've had about 25 freezes so far. I'm surprised N. Bend has only had 5, they appear to be in a valley, I would think there would be some radiational cooling there. 

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, SilverFallsAndrew said:

We've had about 25 freezes so far. I'm surprised N. Bend has only had 5, they appear to be in a valley, I would think there would be some radiational cooling there. 

Two factors... we have had way more cloudiness up here overall and then when it clears out the east wind usually kicks in and we have downslope warming.  

North Bend is a great place for lowland snow and a bad place for frosty nights as we have discussed many times.

  • Sun 1

**REPORTED CONDITIONS AND ANOMALIES ARE NOT MEANT TO IMPLY ANYTHING ON A REGIONAL LEVEL UNLESS SPECIFICALLY STATED**

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3 minutes ago, TT-SEA said:

Two factors... we have had way more cloudiness up here overall and then when it clears out the east wind usually kicks in and we have downslope warming.  

North Bend is a great place for lowland snow and a bad place for frosty nights as we have discussed many times.

And vice versa for the south Willamette Valley, esp the eastern half.

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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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32 minutes ago, TT-SEA said:

It got down to 31 in North Bend this morning... which was only the 5th freeze of the season so far.

Similar to Agassiz in the Fraser Valley. Gets a lot of cloud banked up against the mountains and when it’s clear there is often offshore flow.  It can get really cold there, as cold as anywhere west of the mountains but they have only had 1 freeze this season. December 1st was the only day they dropped below freezing. 

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PDX has had more freezes than North Bend. 

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, TT-SEA said:

And PDX has had way more than Agassiz, BC!  

I just find it interesting. I have always been amazed by what a terrible spot for nighttime cold PDX is. 

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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18 minutes ago, SilverFallsAndrew said:

I just find it interesting. I have always been amazed by what a terrible spot for nighttime cold PDX is. 

They can take solace in knowing that their location is typically not as shitt as down here when it comes to goodies in prime-time.

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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Let's go 18z! Or maybe make us wait another week before anything good pops up.

Weather stats for MBY

Snowfall:

-Total snowfall since joining: 50.25"

-2018-19: 21"

-2019-20: 2.5"

-2020-21: 13"

-2021-22: 8.75"

-2022-23: 5.75"

-2023-24*: 0.25"

-Most recent snowfall: 0.25”; January 17th, 2024

-Largest snowfall (single storm): 8.5"; February 12-13, 2021

-Largest snow depth: 14"; 1:30am February 12th, 2019

Temperatures:

-Warmest: 109F; June 28th, 2021

-Coldest: 13F; December 27th, 2021

-Phreeze Count 2023-24: 31

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30 minutes ago, TigerWoodsLibido said:

They can take solace in knowing that their location is typically not as shitt as down here when it comes to goodies in prime-time.

Eugene has January 1969. 

  • Snow 1

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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18z isn’t horrible through hour 240. Could be worse. 

  • Snow 1

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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Nice day. 

A6A22DC3-F63E-43D9-B9CC-4E0EF5378150.jpeg

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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 minutes ago, Timmy said:

What’s a work day ?

That's when you commute in your vehicle to a place of work and then actually do work at that place of work....I think.

It's been a while, I must say.

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Home Weather Station Stats for 2023

High - Satans Bunghole

Lowest High - Not sure

Low - I don't have the data

Sub 40 highs - Not quite

Sub-freezing highs - Try again

Lows below 25 - You're joking

Lows below 20 - No

2023 Snowfall - LOL

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2 hours ago, jakerepp said:

I was a wee lad then, but I remember December 2008 VERY fondly!

1990 had a major flooding and wind event around Thanksgiving IIRC, then had 2 arctic blasts, one before Christmas and one right after.  White Christmas for many.  Woke up Christmas morning in Anacortes with steady snow falling.

 

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18z still ugly. Onto the next run.

Weather stats for MBY

Snowfall:

-Total snowfall since joining: 50.25"

-2018-19: 21"

-2019-20: 2.5"

-2020-21: 13"

-2021-22: 8.75"

-2022-23: 5.75"

-2023-24*: 0.25"

-Most recent snowfall: 0.25”; January 17th, 2024

-Largest snowfall (single storm): 8.5"; February 12-13, 2021

-Largest snow depth: 14"; 1:30am February 12th, 2019

Temperatures:

-Warmest: 109F; June 28th, 2021

-Coldest: 13F; December 27th, 2021

-Phreeze Count 2023-24: 31

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9 minutes ago, Brian_in_Leavenworth said:

1990 had a major flooding and wind event around Thanksgiving IIRC, then had 2 arctic blasts, one before Christmas and one right after.  White Christmas for many.  Woke up Christmas morning in Anacortes with steady snow falling.

 

Northern Washington and southwest bc also had a good snow event in early January that year.  What an awesome stretch that was. 

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29 minutes ago, SouthHillFrosty said:

The amount of people on the forums in the middle of a work day always surprises me. Then I realize I am on the forums @ work😂 

Took the day off...But work doesn’t stop me from posting either haha! 

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Elevation 580’ Location a few miles east of I-5 on the Snohomish Co side of the Snohomish/Skagit border. I love snow/cold AND sun/warmth! 

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12/21/1990 has the distinction of being the coldest day on record at Silver Falls. 12/-2

Silverton was 17/3 that day. 

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 seriously doubt we see anything like Dec 1990, Jan 1969, or Jan 1950 in our lifetimes but who knows?

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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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2 minutes ago, TigerWoodsLibido said:

I seriously doubt we see anything like Dec 1990, Jan 1969, or Jan 1950 in our lifetimes but who knows?

January 1969 is very much within reach. Much of that month was spent during moderate cold; cold we've achieved in the last decade plenty of times. It just had better moisture present, so a record dumping of snow ensued. That is very possible in our changing climate.

Weather stats for MBY

Snowfall:

-Total snowfall since joining: 50.25"

-2018-19: 21"

-2019-20: 2.5"

-2020-21: 13"

-2021-22: 8.75"

-2022-23: 5.75"

-2023-24*: 0.25"

-Most recent snowfall: 0.25”; January 17th, 2024

-Largest snowfall (single storm): 8.5"; February 12-13, 2021

-Largest snow depth: 14"; 1:30am February 12th, 2019

Temperatures:

-Warmest: 109F; June 28th, 2021

-Coldest: 13F; December 27th, 2021

-Phreeze Count 2023-24: 31

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Yeah January 1969 is basically if February 2019 happened a month earlier. In Eugene it’s not even a top 10 cold January, January 2017 was colder. 

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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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8 minutes ago, SilverFallsAndrew said:

Yeah January 1969 is basically if February 2019 happened a month earlier. In Eugene it’s not even a top 10 cold January, January 2017 was colder. 

And a bit wetter, but yeah, similar picture.

Weather stats for MBY

Snowfall:

-Total snowfall since joining: 50.25"

-2018-19: 21"

-2019-20: 2.5"

-2020-21: 13"

-2021-22: 8.75"

-2022-23: 5.75"

-2023-24*: 0.25"

-Most recent snowfall: 0.25”; January 17th, 2024

-Largest snowfall (single storm): 8.5"; February 12-13, 2021

-Largest snow depth: 14"; 1:30am February 12th, 2019

Temperatures:

-Warmest: 109F; June 28th, 2021

-Coldest: 13F; December 27th, 2021

-Phreeze Count 2023-24: 31

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34 minutes ago, Meatyorologist said:

January 1969 is very much within reach. Much of that month was spent during moderate cold; cold we've achieved in the last decade plenty of times. It just had better moisture present, so a record dumping of snow ensued. That is very possible in our changing climate.

I think it’s fair to include the late December 1968 airmass in the overall mid-winter pattern that year. Nothing moderate there. We haven’t really approached cold like that since.

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Just now, Jesse said:

I think it’s fair to include the late December 1968 airmass in the overall mid-winter pattern that year. We haven’t really approached cold like that since.

It was probably the most anomalous thing regionally about that winter, but I think the snow is its enduring legacy. 

  • Weenie 1

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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4:31 PM Pressure Gradients
Offshore gradients have really steepened the past 8-12 hours with gusty winds returning for those living east of I-205. A quick study of the 12z WRF-GFS modeled at 4 PM shows a PDX-DLS gradient of -7mb and the 12z MM5-NAM at -7mb. This is running 3 to 3.5mb too weak as the gradient is currently a lofty -10.5mb. This may strengthen further tonight with weak pressure falls approaching from the southwest coupled with a modest surface high over the Columbia Basin, and a stratus/low cloud field over the lower Columbia Basin leading to a marginal 'cool' pool where temps remained in the upper 20s to low 30s today. Those factors should work in tandem to intensify the east winds further. As of yet there is no Wind Advisory out for areas East of I-205/Gorge, but I would not be surprised to see one for gusts 40-50mph. Stronger for Corbett, Crown Point.
As of 4 PM
[Gorge/Gap Gradient]
PDX-DLS: -10.5mb
TTD-DLS: -9.9mb
[Cross Cascade Gradient]
PDX-YKM: -10.0mb
PDX-MWH: -10.4mb
PDX-GEG: -10.5mb
OTH-GEG: -13.3mb
*Legend: PDX = Portland, DLS = The Dalles, TTD = Troutdale, YKM = Yakima, MWH = Moses Lake, GEG = Spokane, OTH = North Bend
A -Negative value denotes easterly/northerly flow
A +Positive value denotes westerly/onshore flow
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41 minutes ago, TigerWoodsLibido said:

I seriously doubt we see anything like Dec 1990, Jan 1969, or Jan 1950 in our lifetimes but who knows?

Probably, but I never thought I'd see a December 2008 in my life either. I never thought I'd have 30" of snow on the ground Christmas morning.

 

12z runs. Well, the GFS/GEFS is crappy if you want Cold and SNOW!(For the lowlands), but it does show a change to wet and mountain snows. I liked the 12z GEM/CMCE, EURO/EPS though showing a big Aleutian ridge sliding east with heights rising towards Western Alaska. Some promise there. C'MON!!!!

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4 minutes ago, SilverFallsAndrew said:

It was probably the most anomalous thing regionally about that winter, but I think the snow is its enduring legacy. 

Yeah but my point is it illustrates how much colder the background state was that year. Which of course is why even a January 1969 repeat leaving out the late December airmass would be a very tall order.

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