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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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Doinko Grand Master

Doinko

Posted
Posted
3 minutes ago, TT-SEA said:

Well... that post was good news for the South Sound folks and looking at that loop also good news for your area and for the Portland area.   So yeah... we still check the new runs when they come out while events are happening.    👍

Hoping we can manage an inch. Already seeing some snow so I think it's possible

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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. 

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MR.SNOWMIZER Grand Master

MR.SNOWMIZER

Posted
Posted
16 minutes ago, TT-SEA said:

I have seen talk about Olympia being hit hard... but the ECMWF and the new 00Z GFS don't show any snow in Olympia at al tonight.   And based on the radar... it seems like that area will be missed.    

Umm, the feature that will rotate up into Olympia isn't even at the coast yet.

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We come from the land of the ice and snow.

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snow_wizard Grand Master

snow_wizard

Posted
Posted

Looking pretty promising here.  Very wet snow and starting to see some slush on the ground.  This C-Zone looks like it will be going on for a while.

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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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TT-SEA Grand Master

TT-SEA

Posted
Posted
1 minute ago, GHweatherChris said:

It was a general request, you have been very quick with pulling the "actually" and "technically" card a lot lately, I am not starting anything but you do have a way of poo pooing things for people, and quite a bit lately.

Did I mention you or reply to you?   Seems like you are starting something.   Best to just drop it.    

 

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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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GHweatherChris Grand Master

GHweatherChris

Posted
Posted
Just now, TT-SEA said:

Did I mention you or reply to you?   Seems like you are starting something.   Best to just drop it.    

 

Ya, you did reply to my reply, so yes you did reply.  You could have just as easily taken the feedback and left it alone.  Have a good night.

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TT-SEA Grand Master

TT-SEA

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3 minutes ago, MR.SNOWMIZER said:

Umm, the feature that will rotate up into Olympia isn't even at the coast yet.

Might clip Olympia per the ECMWF... GFS keeps that entire system farther south but best bet is ending up farther north with the deformation zone.

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

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T-Town Grand Master

T-Town

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18 minutes ago, TT-SEA said:

00Z GFS precip loop shows that northern c-zone is about done as the energy transfers to the southern c-zone and specifically south King County and Pierce County for the next couple of hours.

gfs-deterministic-washington-precip_1hr_inch-1676332800-1676336400-1676394000-20.gif

Thanks for the update. It does look like the clouds are lowering here.  Fingers crossed. 

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TT-SEA Grand Master

TT-SEA

Posted
Posted
4 minutes ago, snow_wizard said:

Looking pretty promising here.  Very wet snow and starting to see some slush on the ground.  This C-Zone looks like it will be going on for a while.

The southern c-zone is just getting wider... really impressive on radar.  

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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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SouthHillFrosty Grand Master

SouthHillFrosty

Posted
Posted (edited)
3 minutes ago, TT-SEA said:

Still have a SW wind?   SEA dropped 5 degrees when the SW wind switched to ENE.

Must have. Switched instantly and moderate snow. I just have high expectations now because of earlier this year lol

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TT-SEA Grand Master

TT-SEA

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2 minutes ago, MR.SNOWMIZER said:

That is one of the strongest looking c zones I've ever seen

It also amazing how fast the northern c-zone fell apart... almost like the southern c-zone absorbed it.  😀

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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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TT-SEA Grand Master

TT-SEA

Posted
Posted
1 minute ago, SouthHillFrosty said:

Must have. Switched instantly and moderate snow. I just have high expectations now because of earlier this year lol

Nice... that was fast!  

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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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