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February 4th-6th Overunning & Possible Coastal Threat


IsentropicLift

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  On 2/3/2014 at 6:58 PM, chrisNJ said:

Anyone know the timing of this one?  I am suppose to be in Fairfield, NJ at 0800 Wednesday morning, but I have a feeling the roads for this one will be worse than today. 

I believe most models have the storm starting around 06z, which would be 1am Wednesday morning.

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  On 2/3/2014 at 6:48 PM, nzucker said:

It sounds like even JFK is mostly frozen based on the Euro.

Even by 12z everyone is still frozen. I'm surprised these colder trends are continuing, normally these kind of storms inch north over time.

 

Starting to look like a 3-6" event for most of the city without much plain rain except on the immediate shore, and even then it looks like a 33-34F rain that won't melt a lot of the snow.

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  On 2/3/2014 at 8:34 PM, user13 said:

Nam has been the warmest along with the ggem, so that's a good sign... As the current storm pulls away is should even get colder and follow the gfs

The NAM is very cold at the surface and warm aloft, and to me that makes perfect sense. It's not the case of the low levels being too warm.

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  On 2/3/2014 at 8:41 PM, IntenseBlizzard2014 said:

The 850 0C line was over the Poconos on the 12Z NAM. Now the 850 0C line is over NW NJ on the 18Z NAM. 

 

As Yanksfan was alluding to, the more significant development is how cold the low levels are. Temperatures are in the low to mid 20's anywhere west of NYC.

 

cld42.gif

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The NAM at least for NYC proper is mainly sleet when you look at the soundings, the model wants to show FZRA but the depth of the cold layer is generally deep enough until 15Z for it to be sleet...it shows snow for 1hour then sleet but I'm inclined to think the snow may hold for 3-4 hours...if I had to guess for near NYC, snow 05-08z, sleet 09-15z then FZRA

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  On 2/3/2014 at 8:56 PM, jjvesnow said:

NAM shows around .75 QPF for most the area. Seems the QPF is getting a little lower.

Though the SREFS showed 1inch plus around most the area.

 

I was wondering that myself.  Seems like the numbers are dropping a little each run.  Does that have anything to do with today's system?

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  On 2/3/2014 at 9:04 PM, chietanen said:

I was wondering that myself.  Seems like the numbers are dropping a little each run.  Does that have anything to do with today's system?

 

I think this was always suppose to be a 8-10" storm for us in the deep interior. With WAA snow anything is possible though. It should come in like a wall

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Long time lurker stepping out from the shadows for this potentially amazing period of winter weather...With respect to the possible changeover to plain rain Wednesday; if NYC and Nassau are modeled out by the 12z NAM to be all frozen, I would be very skeptical that all of Suffolk County goes wet. This could be the case of the old "north of the LIE" coming into play. From my recollections, the scenario depicted by the NAM rarely plays out that way.

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