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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

Meatyorologist Grand Master

Meatyorologist

Posted
Posted
3 minutes ago, TT-SEA said:

ECMWF for Tuesday system

ecmwf-deterministic-washington-snow_24hr_kuchera-7639600.png

Love the massive gap over north Seattle. Would be fitting.

  • Like 1

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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Meatyorologist Grand Master

Meatyorologist

Posted
Posted
Just now, SouthHillFrosty said:

Moderate rain at 34.5

Better than 6/29/2021?

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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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snow_wizard Grand Master

snow_wizard

Posted
Posted

Just had a very brief snow shower come through.  The bulk of it missed just to the east.  Looks like there might be some more shortly.

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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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SilverFallsAndrew Grand Master

SilverFallsAndrew

Posted
Posted
9 minutes ago, Cascadia_Wx said:

Looks like that 3/12 ridgy period is gone on this GFS run Andrew.

In fact, the ensemble mean is pretty interesting around that time. 

 

8 minutes ago, TT-SEA said:

ECMWF for Tuesday system

ecmwf-deterministic-washington-snow_24hr_kuchera-7639600.png

Looks really good down this way 

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

Looks like a fairly snowy morning here on Tuesday.  Perfect timing to catch the coldest part of the day.

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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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snow_wizard Grand Master

snow_wizard

Posted
Posted
1 minute ago, MossMan said:

This winter is on the verge of…

If the next system pans out! 

 

It seems like a lot of events have worked out ok.  Not great but ok for many of us.

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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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Cold Snap Grand Master

Cold Snap

Posted
Posted
2 minutes ago, MR.SNOWMIZER said:

Models are really struggling with this event

 Every run is different and every model is different b

 

 

Yeah this is one of those events I feel that is going to have surprises because of that.

2023 - 2024 Cold Season Stats

Total Snowfall - 0.75”

Max Snow Depth - 0.5”

Coldest High Temp - 21 (Jan 13)

Coldest Low Temp - 9 (Jan 13)

Number of Freezes - 51

Sub-40 highs - 12

Highs 32 or lower - 3

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snow_wizard Grand Master

snow_wizard

Posted
Posted
5 minutes ago, Kolk1604 said:

I  saw that. And looks like some snow tomorrow morning 

prateptype_cat_ecmwf-imp.us_state_wa (2).png

prateptype_cat_ecmwf-imp.us_state_wa (1).png

The track of that low is ridiculously perfect on this run.

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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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snow_wizard Grand Master

snow_wizard

Posted
Posted

Now a shower is going to miss just to the west.  F***.

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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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TT-SEA Grand Master

TT-SEA

Posted
Posted
1 minute ago, snow_wizard said:

Now a shower is going to miss just to the west.  F***.

Amazing how fast everything coming in from the coast dissolved... there is nothing left out there.    Offshore flow taking hold which is why the ECMWF shows it getting cold tonight.  

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

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MossMan Grand Master

MossMan

Posted
Posted
4 minutes ago, TT-SEA said:

Amazing how fast everything coming in from the coast dissolved... there is nothing left out there.    Offshore flow taking hold which is why the ECMWF shows it getting cold tonight.  

How are the Euro temp maps looking for overnight? 

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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snow_wizard Grand Master

snow_wizard

Posted
Posted

Pretty disappointing tonight.  The models showed we had a decent chance here.

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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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snow_wizard Grand Master

snow_wizard

Posted
Posted
3 minutes ago, Gummy said:

Yet doesn't yield as much snow as would be expected. Is it just moving through too fast?

Being real...if it verifies verbatim a lot of people will be happy.  We could easily have more than is being shown though.

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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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