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PNW February 2023 Weather Discussion - Meteorological winter finale

Anti Marine Layer

By Anti Marine Layer
in West of the Rockies

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Posted by The Ms. Anthrop,

Really, really lovely cumulonimbus action tonight! I just happened to have my drone in the car and got some solid shots of DT Seattle/Lake Washington/Mercer Island/Bellevue looking north from Skyway. Alas, the focal length of the lens doesn't do the vertical height justice and my WB was off rendering it into semi-gross HDR territory, but still... fun looking weather! It was quite windy- I was flying right at 390 ft and the drone was giving me all sorts of warnings about sustained winds/gusts. 

insta pin. glorious cloud pics!

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Posted by Gradient Keeper,

A most incredible snow storm. At times the snowfall rates have been as heavy or slightly heavier than January 2017. Temp 27.5, Dewpoint: 27.1 with gusty east wind and very heavy snow continuing. I'm at 11 1/2" now! UNBELIEVABLE!!!! This pic does no justice at all.

AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

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Posted by ajreich,

NBM is quite an interesting product! Their weighting algorithm is moderately complex and dynamic, though does has some drawbacks as we saw yesterday. For those who don't know, NBM is an attempt by NOAA to create a super probabilistic forecast model that ingests output from all the models above and outputs forecast guidance for local offices that help them to gauge the relative odds of particular weather outcomes. The 'special sauce' is the post-processing, normalization and weighting that they d
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Posted by BLI snowman,

18 at PDX. First low in the teens there since January 2017.
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Gradient Keeper
Gradient Keeper

A most incredible snow storm. At times the snowfall rates have been as heavy or slightly heavier than January 2017. Temp 27.5, Dewpoint: 27.1 with gusty east wind and very heavy snow continuing. I'm a

OysterPrintout
OysterPrintout

WHAT an event. Huge overperformance for us at this location. Measured 5.5" of snow. Just incredible.   

SilverFallsAndrew
SilverFallsAndrew

Saw this posted on social media. 

Posted Images

Skagit Weather Veteran

Skagit Weather

Posted
Posted

It hit 52F today, but that was only after the sun set. It was cloudy for most of the day and in the 40s, then the sun broke through for about 30 minutes right at the end.

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Home Wx Station Stats (Since January 2008):

Max Temp: 96.3F (2009)   Min Temp: 2.0F (2008)   Max Wind Gust: 45 mph (2018, 2021)   Wettest Day: 2.34 (11/4/22)   Avg Yearly Precip: 37"   10yr Avg Snow: 8.0"

Snowfall Totals

'08-09: 30" | '09-10: 0.5" | '10-11: 21" | '11-12: 9.5" | '12-13: 0.2" | '13-14: 6.2" | '14-15: 0.0" | '15-16: 0.25"| '16-17: 8.0" | '17-18: 0.9"| '18-19: 11.5" | '19-20: 11" | '20-21: 10.5" | '21-22: 21.75" | '22-23: 10.0" 

2023-24: 7.0" (1/17: 3", 1/18: 1.5", 2/26: 0.5", 3/4: 2.0", Flakes: 1/11, 1/16)

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LowerGarfield Grand Master

LowerGarfield

Posted
Posted
1 hour ago, Doinko said:

Looks great for @SilverFallsAndrew . Trough looks stronger on this run than the 18z
prateptype_cat-imp.us_nw.png

What about TWL? @MWGmaybe you can go to a nearby hill and have a snowball fight.

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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), 4/5/24 (T)

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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SilverFallsAndrew Grand Master

SilverFallsAndrew

Posted
Posted
1 minute ago, Front Ranger said:

My rental is currently VACANT, all weather nerds welcome for a storm chase!!

Jesse and I on our way. 

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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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SilverFallsAndrew Grand Master

SilverFallsAndrew

Posted
Posted
1 minute ago, Front Ranger said:

My rental is currently VACANT, all weather nerds welcome for a storm chase!!

Jesse and I on our way. 

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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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snow_wizard Grand Master

snow_wizard

Posted
Posted

Really solid model runs today including a nice improvement in the 12z EPS.   Things are starting to look pretty real!

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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 = 50

Highs 32 or below = 3

Lows 20 or below = 3

Highs 40 or below = 9

 

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snow_wizard Grand Master

snow_wizard

Posted
Posted
44 minutes ago, Front Ranger said:

Getting to the time of year when he often doesn't post unless something big is imminent. Hit and miss after January.

Or he could be dead.

Still alive thank God!

Just kind of busy this week.

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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 = 50

Highs 32 or below = 3

Lows 20 or below = 3

Highs 40 or below = 9

 

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snow_wizard Grand Master

snow_wizard

Posted
Posted

850s bottom out at -8 on Valentine's Day on the GEFS.  That's a pretty legit cold shot.

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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 = 50

Highs 32 or below = 3

Lows 20 or below = 3

Highs 40 or below = 9

 

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snow_wizard Grand Master

snow_wizard

Posted
Posted

Lowland snow is looking like a very decent bet around Valentine's Day and then again later on with the impressive GOA blocking regime showing up on the latest model runs.  Could it be we will see another good February?

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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 = 50

Highs 32 or below = 3

Lows 20 or below = 3

Highs 40 or below = 9

 

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snow_wizard Grand Master

snow_wizard

Posted
Posted
4 minutes ago, WeatherGeek2022 said:

seems pretty realistic.

The block is showing up on pretty much every run of every model now.  Details are impossible to know yet of course.

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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 = 50

Highs 32 or below = 3

Lows 20 or below = 3

Highs 40 or below = 9

 

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Dan the Weatherman Proficient

Dan the Weatherman

Posted
Posted (edited)
5 minutes ago, snow_wizard said:

Lowland snow is looking like a very decent bet around Valentine's Day and then again later on with the impressive GOA blocking regime showing up on the latest model runs.  Could it be we will see another good February?

I hope that leads to a good February for a change in CA as well. February has been absolutely abysmal in terms of the lack of good rains and mountain snow down here over the last decade except for 2017 and 2019. It has been a pretty good year for most of CA this season, but always could use more, as well as the rest of the West.

Edited by Dan the Weatherman
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snow_wizard Grand Master

snow_wizard

Posted
Posted
5 minutes ago, WeatherGeek2022 said:

my unprofessional guess is that we're gonna end up getting like a whopping inch at most.

No telling yet.  Models are hinting at a pretty high end cold snap for mid to late Feb for so late in the season.

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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 = 50

Highs 32 or below = 3

Lows 20 or below = 3

Highs 40 or below = 9

 

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snow_wizard Grand Master

snow_wizard

Posted
Posted

I'm just glad we are getting out of the recent mild pattern.  I really get bummer this of year when we get stuck in this mediocrity and or gloom.

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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 = 50

Highs 32 or below = 3

Lows 20 or below = 3

Highs 40 or below = 9

 

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