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February 4th-6th Overunning & Possible Coastal Threat


IsentropicLift

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My NE forum co-members must all be asleep... How does the Euro look up toward northern Ct, and how does it compare to 12z?

Euro is epic, let's just say that, 4 storms with everyone accumulating snow. Right now, it focuses the snow on MD NE through NY but it's days away so you're in a good place

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Euro is an icestorm just to the north of NYC. The freezing line crosses central LI at hour 84 but then goes a tick north of the area. I mean just barely to the north of NYC at hour 90. Low goes from Ocean City, Maryland to the east of LI.

At hr 84 I see the 0c 850 and surface line south of nyc with at least mod snow falling

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Just basing off this map, when compared to 0z, 6z gfs got a tick cooler

 

The GFS has now just about come around to the Euro's solution, it probably will get there completely on either the 12Z or 00Z run today, I'm not sure anyone will changeover to all rain in this event other than LI, perhaps JFK and coastal NJ...the 06Z GFS if you look at sounding, LGA never goes above 30F and at worst the below freezing layer is 2500ft deep which may be deep enough for PL or FZRAPL

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The GFS has now just about come around to the Euro's solution, it probably will get there completely on either the 12Z or 00Z run today, I'm not sure anyone will changeover to all rain in this event other than LI, perhaps JFK and coastal NJ...the 06Z GFS if you look at sounding, LGA never goes above 30F and at worst the below freezing layer is 2500ft deep which may be deep enough for PL or FZRAPL

Yeah.  Was just looking closely at the GFS since it's been late to the party on this solution but the Euro has been steadfast.

 

What worries me here is that if LGA is at 30, any freezing rain in the elevated areas (especially where I am in NW NJ), will be a rather 'cold' ZR.  ZR at 31 isn't crippling --- but ZR at 26 is another story altogether. 

 

Really hoping for some more trending for more snow than ice...  Euro seemed to have 8 or 9" of snow potentially --- and a dryslot --- which may help in this regard. 

Thanks for the analysis at this early hour Goose.

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The GFS has now just about come around to the Euro's solution, it probably will get there completely on either the 12Z or 00Z run today, I'm not sure anyone will changeover to all rain in this event other than LI, perhaps JFK and coastal NJ...the 06Z GFS if you look at sounding, LGA never goes above 30F and at worst the below freezing layer is 2500ft deep which may be deep enough for PL or FZRAPL

 

Thanks for your analysis.....I just don't want to see ice.....Doesn't happen often out here.....but it can happen. This situation has me nervous, especially with the cooling trend

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Yeah.  Was just looking closely at the GFS since it's been late to the party on this solution but the Euro has been steadfast.

 

What worries me here is that if LGA is at 30, any freezing rain in the elevated areas (especially where I am in NW NJ), will be a rather 'cold' ZR.  ZR at 31 isn't crippling --- but ZR at 26 is another story altogether. 

 

Really hoping for some more trending for more snow than ice...  Euro seemed to have 8 or 9" of snow potentially --- and a dryslot --- which may help in this regard. 

Thanks for the analysis at this early hour Goose.

Why are you saying the GFS is late to the game when 4 days ago it showed a column cold enough for snow from 850mb downward to surface(NYC) then went the other way: -4C to 7C at 850mb. Isn't it merely coming back?
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Why are you saying the GFS is late to the game when 4 days ago it showed a column cold enough for snow from 850mb downward to surface(NYC) then went the other way: -4C to 7C at 850mb. Isn't it merely coming back?

4 days ago is an eternity this winter. It is slowly moving towards the Euro is all I meant. Late to the game in the present modeling suite..
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The GFS has now just about come around to the Euro's solution, it probably will get there completely on either the 12Z or 00Z run today, I'm not sure anyone will changeover to all rain in this event other than LI, perhaps JFK and coastal NJ...the 06Z GFS if you look at sounding, LGA never goes above 30F and at worst the below freezing layer is 2500ft deep which may be deep enough for PL or FZRAPL

SnowGoose what are we looking at here a little snow to start then a crippling ice storm ? Kind of looks like it on the 6Z GFS output at KEWR

 

http://wxweb.meteostar.com/sample/sample.shtml?text=kewr

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Is it right to say most recent guidance gives north jersey 3-5" of snow followed by significant ice/sleet, then maybe a little pure rain and once west of the parkway highest temps maybe 32-34 or so?

Check the soundings above. Looks a lot worse than that on the 6z GFS. Morristown would get a major storm with .80 of snow, and .40 of sleet/freezing rain with temps around 30.

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Upton is honking for this one ..

IN ADDITION...ANOTHER STORM SYSTEM TRACKING UP THE WESTERN FLANKS

OF THE APPALACHIANS TUESDAY NIGHT IS EXPECTED TO REDEVELOP OFF THE

MID ATLANTIC COAST AND PASS SOUTH OF LONG ISLAND ON WEDNESDAY.

THERE IS THE POTENTIAL FOR SIGNIFICANT PRECIPITATION WITH THIS

EVENT...MOST OF WHICH COULD FALL SNOW...SLEET AND/OR FREEZING

RAIN.

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Have to say - this is one of the most wintry precip discussions for short term and longer term overall combined we have seen in quite some time -3 significant storm possibilities- if everything goes right this week into next weekend could be a period we will be remembering for quite awhile in addition to a winter overall we will not forget for a long time - Hope for the best !

 

http://kamala.cod.edu/nj/latest.fxus61.KOKX.html

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Thanks for your analysis.....I just don't want to see ice.....Doesn't happen often out here.....but it can happen. This situation has me nervous, especially with the cooling trend

I'll be honest, I've been worried about ice for several days now...
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