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December 2020 Weather Observations for the PNW


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First snow of the year! Melting quick but at least a little left. Was down south picking up a new family member. 

Beautiful morning in the Blue Mountains of eastern Oregon. It was 12F when I took these pics around 8:30am. Gotta get our winter fix somehow.

Major shift on the 12z EPS to lower heights over the West with rising heights in the SE compared to the 00z last night. Looking like a really fun mid month on through the Holidays. Perfect timing IMO!

Posted Images

2 minutes ago, smerfylicious said:

Mill Creek, elevation 325'...not as heavy as Smokey Point but I will take it.

 

Measured 1/2" so far. 

20201221_192618.jpg

😍

Wet snow is the best snow (unless you’re a skier, lol). Love the way it clings to each and every twig.

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13 minutes ago, HeySoosCreek said:

I'm a block away from Lake Meridian near Covington and it's just rain here for me.

Yeah I don't know what's going on in our area. Rain, brief snow, then mostly back to rain, and now stopped while nearby areas are getting accumulations. 

But I'm optimistic about the band coming in soon. Planning to go for a walk to soak it up, if it can keep holding together.

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Dumping rain and up to 37F. I've gotten 0.5" of rain since it became all snow for a few minutes a number of hours ago. Shame it couldn't be just a bit colder.

Home Wx Station Stats (Since January 2008):

Max Temp: 96.3F (2009)   Min Temp: 2.0F (2008)   Max Wind Gust: 45 mph (2018)   Wettest Day: 2.43 (2012)   Avg Yearly Precip: 37"   10yr Avg Snow: 6.9"

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" 

2020-21: 0"

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2 minutes ago, Cloud said:

So it looks like temps will rise after the front passes and be in the upper 30s. It'll probably melt. :( 

I’ve seen it happen before in these sort of marginal events.

My forecast says partly cloudy after midnight. Hoping it clears enough to get some radiational cooling and a freeze.

It's called clown range for a reason.

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Just now, Rubus Leucodermis said:

I’ve seen it happen before in these sort of marginal events.

My forecast says partly cloudy after midnight. Hoping it clears enough to get some radiational cooling and a freeze.

Yeah, happens here quite often for these type of events, the heavy showers brings the snow levels down to sea level and once it passes, it goes back up. 

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3 minutes ago, Cloud said:

So it looks like temps will rise after the front passes and be in the upper 30s. It'll probably melt. :( 

Yeah... just noticed that the ECMWF shows temps back up to near 40 in the Seattle area by midnight.

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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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That band is really moving fast to the southeast.   The snow is not as impressive as I thought it would be here.

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

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Looks like Randy is getting pounded now... that is probably the beginning of the northern c-zone that is suppose to persist most of the night up there.

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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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1 minute ago, TT-SEA said:

Looks like Randy is getting pounded now... that is probably the beginning of the northern c-zone that is suppose to persist most of the night up there.

I actually think the CZ starts up North but shifts to the south sound and stays there a bit.

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3 hours ago, Mr Marine Layer said:

Hope you all enjoyed the shortest day of the year.

This was my worst shortest day of the year ever. 

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Weather Data for Klamath Falls, OR
-------------------------------------------------------------------
Snowfall (with % of seasonal average)

2010-2011 - 60.70" (168%)
2011-2012 - 49.00" (136%)
2012-2013 - 25.10" (70%)
2013-2014 - 9.05" (25%)
2014-2015 - 2.90" (8%)
2015-2016 - 54.45" (151%)
2016-2017 - 63.00" (175%)
2017-2018 - 18.10" (50%)
2018-2019 - 52.30" (145%)
2019-2020 - 37.00" (103%)
 
2020-2021 - 07.50"
Nov '20 - 00.20" (5%)
Dec '20 - 04.40" (44%)
Jan '21 - 02.90"
 
2021 Thunderstorms
--/--,
 
Top 5 Daily Snows: 12.40" (01/03/2017), 8.20" (11/23/2010), 7.50" (12/13/2015), 6.60" (02/07/2017), 6.20" (03/10/2019)
Honorable Mention: 6.00" (03/20/2012), 6.00" (02/28/2012), 6.00" (01/16/2020), 5.70" (12/14/2016), 5.50" (01/18/2012)
Max Depths: 21.00" (01/07/2017), 18.00" (12/24/2015), 13.00" (01/16/2020), 11.00" (11/23/2010), 9.50" (02/27/2019), 9.00" (02/28/2012)
 
T'storm Days: 10 (2020), 14 (2019), 16 (2018), 12 (2017), 13 (2016), 20 (2015), 21 (2014), 16 (2013), 2 (2012), 12 (2011)
1980-2015 Avg = 12
Severe T'storms: 6 (08/05/2020), (08/10/2019), (08/08/2017), (07/24/2017), (01/19/2016), (08/05/2012) 
"Almost" Severe: 2 (08/10/2017), (05/04/2016)
Vicinity Severe T'storms (close enough to hear, with official severe reports)
(06/26/2017), (08/05/2016), (07/09/2015), (07/05/2015), (06/09/2015), (08/05/2014), (08/04/2014), (08/22/2013), (08/12/2013), (09/12/2011), (09/04/2011)

 

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4 minutes ago, Rubus Leucodermis said:

When was the last time KSEA both set a record high and recorded snow on the same day?

Not sure if they've ever done it before, actually. They came fairly close in November 2014, record high of 58 on 11/27 and 0.8" of snow on 11/29.

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Just now, umadbro said:

I actually think the CZ starts up North but shifts to the south sound and stays there a bit.

No... that southern c-zone is not really a c-zone.   Its what is happening right now.   

First image is right about now.   Second image is at 1 a.m. and the third image is 4 a.m. as the northern c-zone fades into the Cascades and does not move south.  

ecmwf-deterministic-washington-precip_1hr_inch-8609600.png

ecmwf-deterministic-washington-precip_1hr_inch-8627600 (1).png

ecmwf-deterministic-washington-precip_1hr_inch-8638400.png

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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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9 minutes ago, TT-SEA said:

That band is really moving fast to the southeast.   The snow is not as impressive as I thought it would be here.

Yes, watching on radar it is moving quickly. Back to all snow here, but don't expect it to amount to much unless somehow a CZ stalls over me. Though I'm pretty far south.

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11 minutes ago, Meatyorologist said:

SolsticeMiracle2.thumb.jpg.44ba439ed17fd9e983a0fa459f98f903.jpg

SolsticeMiracle3.thumb.jpg.98c332ae2c0f382b5e7e059d4c28e8b7.jpg

SolsticeMiracle4.thumb.jpg.a9601694dc49392b73b53f8796fd5ef8.jpg

SolsticeMiracle6.thumb.jpg.f2cfb4463acd3e55a07ab86a653cc623.jpg

SolsticeMiracle5.thumb.jpg.719391ac00ada8254c2f9cbb19cd0838.jpg

SolsticeMiracle11.thumb.jpg.dc2dbb8e94255b55194bbc624fc5a528.jpg

Some snow pics today from the Solstice Miracle. I made the very best of the low exposure environment.

 

Nice pictures man, I totally didn't get any snow. lol

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Weather Data for Klamath Falls, OR
-------------------------------------------------------------------
Snowfall (with % of seasonal average)

2010-2011 - 60.70" (168%)
2011-2012 - 49.00" (136%)
2012-2013 - 25.10" (70%)
2013-2014 - 9.05" (25%)
2014-2015 - 2.90" (8%)
2015-2016 - 54.45" (151%)
2016-2017 - 63.00" (175%)
2017-2018 - 18.10" (50%)
2018-2019 - 52.30" (145%)
2019-2020 - 37.00" (103%)
 
2020-2021 - 07.50"
Nov '20 - 00.20" (5%)
Dec '20 - 04.40" (44%)
Jan '21 - 02.90"
 
2021 Thunderstorms
--/--,
 
Top 5 Daily Snows: 12.40" (01/03/2017), 8.20" (11/23/2010), 7.50" (12/13/2015), 6.60" (02/07/2017), 6.20" (03/10/2019)
Honorable Mention: 6.00" (03/20/2012), 6.00" (02/28/2012), 6.00" (01/16/2020), 5.70" (12/14/2016), 5.50" (01/18/2012)
Max Depths: 21.00" (01/07/2017), 18.00" (12/24/2015), 13.00" (01/16/2020), 11.00" (11/23/2010), 9.50" (02/27/2019), 9.00" (02/28/2012)
 
T'storm Days: 10 (2020), 14 (2019), 16 (2018), 12 (2017), 13 (2016), 20 (2015), 21 (2014), 16 (2013), 2 (2012), 12 (2011)
1980-2015 Avg = 12
Severe T'storms: 6 (08/05/2020), (08/10/2019), (08/08/2017), (07/24/2017), (01/19/2016), (08/05/2012) 
"Almost" Severe: 2 (08/10/2017), (05/04/2016)
Vicinity Severe T'storms (close enough to hear, with official severe reports)
(06/26/2017), (08/05/2016), (07/09/2015), (07/05/2015), (06/09/2015), (08/05/2014), (08/04/2014), (08/22/2013), (08/12/2013), (09/12/2011), (09/04/2011)

 

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1 minute ago, Fircrest said:

Yes, watching on radar it is moving quickly. Back to all snow here, but don't expect it to amount to much unless somehow a CZ stalls over me. Though I'm pretty far south.

 

I am in the "huge snowflake" area of that band right now.   

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

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4 minutes ago, TheNewCulverJosh said:

Bungles beat the Stealers.  Lots of weird crap going on tonight.

Must be the Jupiter/Saturn conjunction.

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