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December 17th Clipper Potential


Radders

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South winds at 10m..those 40's are lurking very close to the coast.

This environment surrounding a clipper on January 19, 2005 was different, but there are enough similarities to make this one worthy of recall.  Sea water temps were in the mid 40's, land temps were very cold to start and we got a moderate snowfall on a south wind.  Most of that was OES related and winds did shift west as the clipper got closer:

 

http://www.wunderground.com/history/airport/Kfok/2005/1/19/DailyHistory.html?req_city=NA&req_state=NA&req_statename=NA

 

 

http://www.northshorewx.com/images/sidebars/OES-20050119.gif

 

 

http://www.northshorewx.com/images/sidebars/SkewT-OKX-20050119-1200Z.gif

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I am hoping the last minute adjustments break in our favor. The clipper last winter really surprised

the people in Southern New Jersey as the precip shield verified outside what the models were showing

and turned into a nowcast special.

The NAM looks like it's the furthest north of all the models. In that case we should be fine as long as there's no last minute north trend.

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We have to watch out for any south winds out ahead of this. The NAM shows 40s right off the beaches. But as long as it goes south of our latitude I think we're okay.

 

This lower reso ensemble mean from the Euro looks like it may be a few miles north of the OP.

 

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The soundings still warm the atmosphere bringing about the changeover for the NYC area. It's a closer call than the 12z run, though.

I think intensity is going to play a role in this event with borderline temps in the lower layers 

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The soundings still warm the atmosphere bringing about the changeover for the NYC area. It's a closer call than the 12z run, though.

 

Having the euro a bit colder is reassuring. The 4km, higher resolution NAM is also cooler with dynamics bringing the temperature down and keeping the precipitation snow over Northern NJ, NYC, LI and CT.

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Having the euro a bit colder is reassuring. The 4km, higher resolution NAM is also cooler with dynamics bringing the temperature down and keeping the precipitation snow over Northern NJ, NYC, LI and CT.

I agree. The GFS was colder, as well, at 12z. We'll see what this run shows. Hopefully, it will remain sufficiently cold for an all snow event across the area.

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