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December 2020 General Discussions & Observations Thread


bluewave
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19 minutes ago, TugHillMatt said:

Really?? Ugh...so a pattern we've already been stuck in of warmer than average shifts to a new pattern of warmer than average again?

Let it end.

The cutter and hugger storm tracks can really produce for the areas around the Great Lakes. But all the warmth gets tired during the summer when people go north to cool off. Last several summers you had to go up into Canada to escape the heat.

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1 minute ago, bluewave said:

The cutter and hugger storm tracks can really produce for the areas around the Great Lakes. But all the warmth gets tired during the summer when people go north to cool off. Last several summers you had to go up into Canada to escape the heat.

Yeah, warm...warm...warm...yawn.

Much of the Great Lakes region hasn't done very well the last several winters either. If snowstorms do happen, they melt a couple days later.

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3 minutes ago, TugHillMatt said:

Yeah, warm...warm...warm...yawn.

Much of the Great Lakes region hasn't done very well the last several winters either. If snowstorms do happen, they melt a couple days later.

Yeah. Winter has been out west the last two years. A Niña like pattern will do that. Their has not been much winter outside of Maine in the east. 


-pna/dateline ridge/ strong vortex is a recipe for cutters 

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22 minutes ago, TugHillMatt said:

Yeah, warm...warm...warm...yawn.

Much of the Great Lakes region hasn't done very well the last several winters either. If snowstorms do happen, they melt a couple days later.

I don’t really mind if the snow melts a few days later. Our snowy 15-16, 16-17, and 17-18 winters featured big warm ups following most snowstorms. Kind of like spring in the Rockies. But it isn’t the greatest if you run a ski resort and have to put up with the sloppy conditions.

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15 minutes ago, bluewave said:

I don’t really mind if the snow melts a few days later. Our snowy 15-16, 16-17, and 17-18 winters featured big warm ups following most snowstorms. Kind of like spring in the Rockies. But it isn’t the greatest if you run a ski resort and have to put up with the sloppy conditions.

most big snows melt or get washed away within a week to ten days...the storms and snow cover that last for weeks uaually have reinforcements down the line...the Kennedy inaugural storm was followed by over two straight weeks of sub freezing highs and another 22" before a thaw set in......

 

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6 minutes ago, uncle W said:

most big snows melt or get washed away within a week to ten days...the storms and snow cover that last for weeks uaually have reinforcements down the line...the Kennedy inaugural storm was followed by over two straight weeks of sub freezing highs and another 22" before a thaw set in......

 

2016 to 2018 featured great snowstorms that melted a few days later in many cases. 2014 to 2015 had long lasting snow cover but the storms weren’t as impressive in my area as 2016 to 2018. 2010-2011 was the rarest of them all with great snowstorms and long lasting snow cover. I can still remember the snow mountains from the road crews piled high near the LB Boardwalk into the spring.

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GEFS is really making the alleged BN period for the first half of December look like a head fake.

There are no 5-Day periods showing as BN.   Closest is the period centered on the 10th.     Traces of snow that showed successively for the 2nd, 5th, 7th. and 10th. have melted.

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3 hours ago, bluewave said:

I don’t really mind if the snow melts a few days later. Our snowy 15-16, 16-17, and 17-18 winters featured big warm ups following most snowstorms. Kind of like spring in the Rockies. But it isn’t the greatest if you run a ski resort and have to put up with the sloppy conditions.

Melting snow after a snowfall is pretty normal in your region. I was hoping living in a lake effect area would help keep it whiter (which it does), but we actually need some solid cold air to get decent snow from the lakes here...unlike the 'cold" that is mild Pacific/maritime air. I am a bigger fan of a consistent wintry look...which has become pretty rare over much of the U.S. these days.

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The GEFS Extended which not many days ago showed Winter arriving with T's in the 60's, now greets the cold solstice with a major snowstorm and has a total of 20" :P for the month.        Plenty of time for it to reach 40" and drop back to 0" many times.  

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55 minutes ago, CIK62 said:

The GEFS Extended which not many days ago showed Winter arriving with T's in the 60's, now greets the cold solstice with a major snowstorm and has a total of 20" :P for the month.        Plenty of time for it to reach 40" and drop back to 0" many times.  

snod.conus.png

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9 hours ago, MJO812 said:

Weenie land

Gfs shows some snow for mid December.  This is the timeline that many people have said. Cold pattern sets up after the 2nd low cuts inland.

The 0Z Euro says the 2nd low stays stays south of us and off the coast and the 06Z GFS has shifted south and east  also

prateptype_cat_ecmwf.conus.pnggfs_mslp_pcpn_frzn_us_27.png

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58 minutes ago, bluewave said:

The first week of December will start out milder in the Northeast than some of the guidance was indicating a week ago. 
 

New run

83DD17E8-6969-4B77-A5BE-D867C56A0B42.thumb.png.9175a2d8e5414d066c0555b093fb35f5.png
 

Old run

 

3C49C07E-0047-4124-9A0B-B97AA7ADE647.thumb.png.a0ba7c9c2a9a89abd61d1c8336923b8a.png

 

That’s because the models were figuring out where the low pressures were. It was only cold underneath the cutoffs 

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14 minutes ago, Allsnow said:

That’s because the models were figuring out where the low pressures were. It was only cold underneath the cutoffs 

It has been an ongoing issue for the GEFS. I can’t wait until machine learning brings us bias corrected model guidance maps. Maybe someday we can look at day 11-15 bias corrected maps which will take long range forecasting to the next level. But that will probably require quite a bit more computer power.

25BA25C8-48F8-47C2-BD6A-20B832880054.png.075da07792d3bc6f714aa828ee371750.png

 

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1 hour ago, wdrag said:

Adding one 00z/29 GEFS RMOP graphic on next weekend... door not closed.  Confidence on trough axis but not the trough strength .. note confluent flow to our north. While it may be rain here, I'm looking for a decent storm to eventually re-evolve northward. 

Screen_Shot_2020-11-29_at_11_26.37_AM.png

Good call Walt - 12Z Euro brought back next weekends storm

prateptype_cat_ecmwf.conus.png

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The first 10 days of December are averaging 43degs.(38/47).        Making it 37degs., or  -3.0.        There is no Snow showing for the period or through the first half of the month for that matter, since Dec.14 now keeps showing up as Rain in the 50's-----instead of the earlier snow in the 30's.

The period of Dec. 20---Jan. 20 looks like a loser's game if you like snow and cold.      Only an atmospheric accident will help us here----read that as 'miracle'.    

                                                                                              CAR  SSWE....... WHERE ARE YOU?

The Meteorological Winter at a glance:

007.01.t.gif

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