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NYC/PHL January 7-9 Potential Part Deux


NickD2011

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The blocking is not breaking down...there is an absurd ridge over the North Pole, Bering Strait, and Siberia....monster -EPO opening the floodgates for some absurd cold beyond Day 10.

Also, I see another high pressure building into Greenland.

Nothing on the ECM indicates the blocking is breaking down IMO.

Strongly agree. I think we're beginning to see a major signal for both a continuation of blocking and a resurgence of the -NAO in the d10-15 timeframe. While it's not great for severe cold, it's wonderful for sustained cold and continued snow chances, which I'm sure most would prefer to an early 80s style arctic outbreak (not that one of those is off the table before the -NAO comes back swinging).

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Strongly agree. I think we're beginning to see a major signal for both a continuation of blocking and a resurgence of the -NAO in the d10-15 timeframe. While it's not great for severe cold, it's wonderful for sustained cold and continued snow chances, which I'm sure most would prefer to an early 80s style arctic outbreak (not that one of those is off the table before the -NAO comes back swinging).

What we want is to get the PV down before the NAO bleeds in too much. That will bring us the -36C 850s that are showing up over Canada in the Day 10 ECM. Then we want the NAO to rebuild so we can sustain that cold and get some snow threats. This is just a ridiculous map BTW, you can see the cold headed straight for the East Coast with increasing heights out West, major arctic air:

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Strongly agree. I think we're beginning to see a major signal for both a continuation of blocking and a resurgence of the -NAO in the d10-15 timeframe. While it's not great for severe cold, it's wonderful for sustained cold and continued snow chances, which I'm sure most would prefer to an early 80s style arctic outbreak (not that one of those is off the table before the -NAO comes back swinging).

I was just thinking of that too. I dont know about everyone else, but I would give up my chances for seeing below zero temps to get a month like Jan 2004. Jan 1985 and even Jan 1994-- not all that exciting here. Well, we had a historic ice storm in Jan 1994, but that was about it.

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The sleet was a problem for LI and coastal NJ I think...LGA the belief is there was LI Sound enhancement...the snow on the 20th was generally not forecast...as you see the surface low was well NE by that morning but that 500 vort had a surprise as often happens.

Yeah, JFK needed that surprise to get in line with the other reporting stations, as we had mostly sleet overnight. We pretty much caught up to NYC with the surprise snow the next day. The period between that and the Jan blizzard was the best time for sustained cold and snowcover that winter; that storm stalled to our NE and continually pumped down arctic air and the snowcover from that storm actually lasted right into the big blizzard.

That storm was the best example of LGA sound enhancement I can think of-- NYC had 8 inches and LGA had 14-- almost double!

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yea it might of been, i remember being in college in doylestown and they got like a couple inches form it. But i think nj got hit harder.

is this the right map?

jan142006.jpg

I don't believe so...that may have been that Saturday night event that pounded the ACY area, but that was strictly upper level induced as you see below...the setup at 500 overall resembles the event that dropped 3-4 inches in Nassau county earlier this month and 1-2 over Queens....I have posted many times that the setup shown below and the one that produced the event I mention above with those mega-negative tilt troughs over the NE US with surface lows near BOS are deadly for the NYC/LI/NJ area as far as dropping unexepected snowfalls.

http://www.meteo.psu.edu/~gadomski/NARR/2006/us0115.php

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I don't believe so...that may have been that Saturday night event that pounded the ACY area, but that was strictly upper level induced as you see below...the setup at 500 overall resembles the event that dropped 3-4 inches in Nassau county earlier this month and 1-2 over Queens....I have posted many times that the setup shown below and the one that produced the event I mention above with those mega-negative tilt troughs over the NE US with surface lows near BOS are deadly for the NYC/LI/NJ area as far as dropping unexepected snowfalls.

http://www.meteo.psu...2006/us0115.php

SG, when was that storm that dropped 3-4 inches in Nassau? Did you mean Jan 09? The storm Tombo is referencing, I remember well-- it occurred in the middle of a very mild pattern, and was a surprise.

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The GFS is pounding the infamous Bermuda triangle region there in SE NY near Monticello and the Catskills where the elevation often enhances amounts.

Monticello probably averages the highest snowfall in our region-- but I dont know if you could exactly consider it our region-- being there makes you feel like youre in the middle of Montana lol.

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The GFS is pounding the infamous Bermuda triangle region there in SE NY near Monticello and the Catskills where the elevation often enhances amounts.

And they really are usually enhanced, having spent a large amount of my youth near Roscoe,NY I can tell you the area does really well largely due to high ratios and upsloping.

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Monticello probably averages the highest snowfall in our region-- but I dont know if you could exactly consider it our region-- being there makes you feel like youre in the middle of Montana lol.

Im about a 15 min drive SE of Monticello and they average 50% more then I do!

I believe the average elevation in the town itself is roughly 1500'

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Monticello probably averages the highest snowfall in our region-- but I dont know if you could exactly consider it our region-- being there makes you feel like youre in the middle of Montana lol.

Don't tell that my mother... Gotta remember the borch belt. My great aunt still lives up there... How? I have no clue.

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