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12/29 - New Years Storm Threat Discussion


Dsnowx53

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PNA, AO, and NAO all are coming to a cross-road at that juncture (Jan. 2). Thereafter, PNA looks to go neutral, and AO and NAO go to hell in a handbasket. Pattern could get pretty ugly for snow after the first few days of Jan.

The one after this storm is looking really interesting on the GFS.

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The more I look at the orientation of the 500 mb pattern, the less excited I feel about developing this system further. I think this system would head west again if it were to organize. It continues to make attempts at closing off an 850 mg low over OH which would be disasterous for us. Key player is the energy off the CA coast which is preventing this system from diving further SE. Another key point: no 50/50 low and terrible confluence over the NE. Let's get this system in and out as quickly as possible and salvage the 3-5 inches of snow.

I do see a 50/50 low...there's a 528dm ULL near Newfoundland at 87 hours on the GFS with higher heights ahead of it in the North Atlantic, though certainly not a true block:

post-475-0-89206100-1356495605_thumb.gif

I'm not too worried about the system going too far west given that heights on the East Coast actually trended lower from the 18z GFS to the 0z GFS...not to mention that the Euro is well off the coast.

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This just in from DT

** BRIEF COMMENTS OF DEC 30 AND JAN 3 THREATS.... 0Z GFS MODEL

the 0z WED GFS run has the dec 30 event forming further south and COLDER ...moving towards the EURO solution. NOT major snowstorm.. NOT... but decent ...snow for western and sw VA north central VA and Northeast VA Central and eastern MD Philly... NJ into NYC. STILL WORRIED ABOUT SURFACE TEMPS in and around RICHMOND FOR DEC 29-30

ABOUT JAN 3, 2013 EVENT.. See image... bigger threat and more cold airSee More

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If something doesn't change in the next 24-36hrs I think you can pretty much write this one off and look towards the next storm threat.

We could still score a light snow from a disorganized coastal storm as the GFS portrayed.

The biggest threat is around 1/3 with the SW cut-off low ejecting into a very cold airmass that gets pulled down behind this "coastal."

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I am certainly willing to give it a little more time before pulling the plug on this one, and I agree with you on a light snow event. On a more positive note, if this weekends storm doesn't wind up working out which looks to be the case right now as far as a bigger storm is concerned then hopefully "3rd time is a charm" for the storm potential around Jan. 3rd.

We could still score a light snow from a disorganized coastal storm as the GFS portrayed.

The biggest threat is around 1/3 with the SW cut-off low ejecting into a very cold airmass that gets pulled down behind this "coastal."

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I am certainly willing to give it a little more time before pulling the plug on this one, and I agree with you on a light snow event. On a more positive note, if this weekends storm doesn't wind up working out which looks to be the case right now as far as a bigger storm is concerned then hopefully "3rd time is a charm" for the storm potential around Jan. 3rd.

More like 4th time. 1st was Xmas wave, 2nd is tomorrow's system, 3rd is 29-30 and 4 would be whatever's next. This isn't good, if something doesn't produce by the 1st week of January, then we could be in trouble as the PNA will break down, the NAO/AO will be positive and we'll likely torch by mid January.

It's amazing how some years it'll snow no matter what the setup is and other years it's like pulling teeth. I remember 2008-2009 being like that until we finally got a decent storm in early March.

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West coast trof , dappens trof in east. If u look at the ridge out west for the 27 ths storm. You will see where the room for development occurs on the east coast. Now look at ths storm same period. There's a trof there , will not yield similar deepening But hey if your in NYC you gotta take anything

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I was referring to "3rd time is a charm" for a larger and stronger storm potential. The Christmas Eve wave was never expected to be a big storm, it was always a light event. Tomorrow's storm, this weekends storm potential, and next weeks potential all had/have the potential to be significant snow producers.

More like 4th time. 1st was Xmas wave, 2nd is tomorrow's system, 3rd is 29-30 and 4 would be whatever's next. This isn't good, if something doesn't produce by the 1st week of January, then we could be in trouble as the PNA will break down, the NAO/AO will be positive and we'll likely torch by mid January.

It's amazing how some years it'll snow no matter what the setup is and other years it's like pulling teeth. I remember 2008-2009 being like that until we finally got a decent storm in early March.

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PNA, AO, and NAO all are coming to a cross-road at that juncture (Jan. 2). Thereafter, PNA looks to go neutral, and AO and NAO go to hell in a handbasket. Pattern could get pretty ugly for snow after the first few days of Jan.

If it's not going to snow then bring on spring, better yet summer!!

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