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March 24-25 Winter Storm Threat


Mitchel Volk

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Right now the NAM, GFS, GEFS, GGEM, NAVGEM, SREFS all have the low in a fairly consistent (and favorable spot). A tick NW on some of the models would be the difference between a 2-4/3-6" storm and something bigger.

 

Pretty good trends and consistency with some snow, just a matter of how much.

If the Euro comes NW you'll see a lot more excitement in this forum. For days now it's wanted nothing to do with the more amplified solutions.

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It's the confluince bro from the blocking. On Monday morning you might wake up to see the precip hitting a brick wall just north of the area.

I totally understand how it's happening but that would be wicked to see basically a 100 mile wide storm because of the confluence drying it up beyond a certain point.

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I totally understand how it's happening but that would be wicked to see basically a 100 mile wide storm because of the confluence drying it up beyond a certain point.

Well February 6, 2010 was very painful for me. Philly and DC got buried. I think Staten Island and points south in our forum did ok. I think Central Park may have seen advisory level snow?

 

Went to bed with a winter storm warning for 4-8" overnight.

 

Woke up at 6am to see a virga fest over me with the snow about 20-30 miles to my south moving due east. I didn't see a single flake that day.

 

Confluince can be a glorious thing if you're lucky enough to be south of where it sets up as those areas can get really, really dumped on. Sucks if you're just a hair north.

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Central Park had NADA on that uer painful storm. a few flurries and AC had 20+ inches. worse yet I remember readong on this forum as close as S.I had 10 inches

Well February 6, 2010 was very painful for me. Philly and DC got buried. I think Staten Island and points south in our forum did ok. I think Central Park may have seen advisory level snow?

 

Went to bed with a winter storm warning for 4-8" overnight.

 

Woke up at 6am to see a virga fest over me with the snow about 20-30 miles to my south moving due east. I didn't see a single flake that day.

 

Confluince can be a glorious thing if you're lucky enough to be south of where it sets up as those areas can get really, really dumped on. Sucks if you're just a hair north.

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Central Park had NADA on that uer painful storm. a few flurries and AC had 20+ inches. worse yet I remember readong on this forum as close as S.I had 10 inches

okay so I was a hair off. I do remember Staten Island doing ok. The NAM insisted for days that the cut off would be right around I-80. I remember it was one of the bigger wins for the NAM ever. It never budged from 72 hours out. Kept waiting for it to tick north and it never happened.

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okay so I was a hair off. I do remember Staten Island doing ok. The NAM insisted for days that the cut off would be right around I-80. I remember it was one of the bigger wins for the NAM ever. It never budged from 72 hours out. Kept waiting for it to tick north and it never happened.

That storm featured an uber block and a historically low NAO, that entire winter had massive blocking where those further south actually did better than us, which almost never happens.

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That storm featured an uber block and a historically low NAO, that entire winter had massive blocking where those further south actually did better than us, which almost never happens.

We caught up with the 2/25/10 miller B storm that was a miss SW of Philly. I think Philly still had more than Central Park after they had a big difference in amounts from that one.

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The GGEM precip type maps are out and confirm that this is probably the best case scenario.
 
Starts everyone off as a mix/rain at 19z Monday. Quite a bit later than the rest of the 12z guidance. By 21z we're all flipped over to heavy snow except Long Island. By 23z we're all heavy snow. Tracks a 984 mb low from Cape May to the benchmark. Precip shuts off around 09z on the 26th.

http://collaboration.cmc.ec.gc.ca/cmc/cmdn/pcpn_type/pcpn_type_gem_reg.html

http://collaboration.cmc.ec.gc.ca/cmc/cmdn/pcpn_type/pcpn_type_gem_reg.html

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The GGEM precip type maps are out and confirm that this is probably the best case scenario.

Starts everyone off as a mix/rain at 19z Monday. Quite a bit later than the rest of the 12z guidance. By 21z we're all flipped over to heavy snow except Long Island. By 23z we're all heavy snow. Tracks a 984 mb low from Cape May to the benchmark. Precip shuts off around 09z on the 26th.

http://collaboration.cmc.ec.gc.ca/cmc/cmdn/pcpn_type/pcpn_type_gem_reg.html

http://collaboration.cmc.ec.gc.ca/cmc/cmdn/pcpn_type/pcpn_type_gem_reg.html

Take into account that these maps are often skewed warm and it's even better... I wouldn't take any sort of snow map verbatim as they often have trouble resolving the coast very well

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