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December 2020 Weather Observations for the PNW


Omegaraptor

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Back to rain here. Whelp, it was fun while it lasted.

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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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25 minutes ago, hawkstwelve said:

18z Euro coming out and it appears too warm at the surface for 4PM.

Shows Seattle sitting at 52 when really they are sitting on either side of 40 per Wunderground stations.

 

ecmwf-deterministic-seattle-t2m_f-8595200.png

This looks pretty wrong to me. BFI is currently 40 and SEA is 43 at the 4pm update. 

SEA had a -12F drop in just the last hour alone. 

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24 minutes ago, DJ Droppin said:

I'm happy some of our weather geeks up north are seeing some snow and even snowy fun. Enjoy it. It's windy down here and about to rain. 12z runs/ensembles just.... It's hard to be very encouraged. I will look forward to the dry, cold east winds though. At least there's that. Maybe I'll take a vacation.

Look at it this way: a week ago, there was no sign in the models this might happen. In fact, I recall posting something here that it might well snow in the lowlands before the month is out. I didn’t know this event was going to happen; I was just going on the generally poor model accuracy we’ve been experiencing.

Anyhow, that logic still holds: would not be surprised if another chance comes sooner than the models are indicating right now.

32˚F and still snowing here. A little over an inch of accumulation.

It's called clown range for a reason.

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2 minutes ago, hawkstwelve said:

Yup, it's definitely a fair amount colder than what was modeled for this time, at least at the surface.

Hoping this bodes well for the evening. 

I guess the key would be, is the front just progressing faster than expected?

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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Went for a walk earlier and saw some pretty intense urban flooding. I’d never seen the creek that high in my life.

Super cool to see the dynamics of this event as the rain poured and temperatures dropped from 55°F to 39°F in the span of an hour. Hoping to see some snow flying in the air soon... 🤞

8B3274EF-018C-4BE2-842D-8A7E7AC3DFF2.thumb.jpeg.2b6fe78b43274139d3104fbef42aceba.jpeg

728D94B2-F3F6-4B12-84AA-7CED9B679B84.thumb.jpeg.c8af7fe0d9d420dfcb2cf33c2bda5575.jpeg

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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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50 minutes ago, SilverFallsAndrew said:

Long range GFS is very interesting... Okay not very, but it at least through us a bone. Dry and chilly. 

Unfortunately, the dominant theme of the ensembles is still an Aleutian low in the extended.

But the different operationals keep flirting with a semi-interesting setup around day 10, so at least there's that.

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A forum for the end of the world.

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SNOWFLAKE ALERT!

 

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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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12 minutes ago, bainbridgekid said:

First flakes here! Big wet flakes started mixing in right at 4:30 and it's mostly wet snow now.

There really is no better feeling than those first flakes after spending countless hours tracking and analysing things.

Enjoy, there seems to be a lot left in the trailing bands:

SZ7ppSS.jpg

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I have slush!

 

818449CA-FEB7-47CA-A40D-62504905018C.jpeg

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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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Hmmm...raining harder than it has most of the day and yet it's still getting warmer. As others have noted probably means unless you have a little elevation you won't be seeing much snow.

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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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