Dec 24, 2013 Noon Updates

A few updates will be posted on the light snow event affecting the area today. The next forecast update will be posted on Wednesday morning.


Blog Updates: (Regional radar from the Pennsylvania State University e-Wall)

 

7:55 PM: Heavy Snow in SW CT, Suffolk county

nerad253The southern squall has moved out of NE NJ and is currently brushing northern Nassau county, while light snow showers affected most of NYC, especially in the Bronx and Queens. This area of snow will persist longer than the squalls that affected other parts of the area, and based on reports from interior SE NY, snow totals up to at least 1 to 1.5 inch are likely mostly in the western half of Fairfield county, possibly extending into west-central Suffolk county, lasting through at least 8:30pm in SW CT and 9:15pm in Long Island before ending. Clearing skies are then expected tonight with temperatures falling into the low 20s in NYC and 10s for the rest of the area.

The 8-Day Forecast has been updated earlier today for the first time since last week, with daily updates scheduled to be resumed. The next forecast discussion will be posted tomorrow morning regarding the continued temperature swings and the cold temperatures expected to start the new year.

7:05 PM: Snow Squall Entering NYC

nerad252Since the last update, the snow squall over NE PA split, with one part heading through far northern NJ and the other remaining over interior southeast NY. Accumulations of a coating to 1/2 inch have been reported in northern NJ, with similar accumulations in southeast NY. The southern squall will continue to head ESE towards Nassau and W Suffolk counties, while the northern area of snow is headed towards southwestern Connecticut, mainly Fairfield county. While these squalls are fairly short lasting, low visibility is expected leading to hazardous road conditions.

 

3:45 PM: Light Snow Approaching

nerad25With an arctic front moving through the region, scattered snow squalls have developed over Pennsylvania with the aid of strong low level lapse rates, with a concentrated area of heavy snow squalls over the northeast PA/south NY border, moving ESE. This narrow band of snow is expected to persist as it continues to track into the area this evening, mainly between 6-10pm; while most locations are expected to observe scattered snow showers with a dusting of snow possible, locations under this narrow band of moderate-locally heavy snow squalls could observe up to 1/2″ to 1″ of snow, with temperatures quickly falling to near and below freezing.

Since this is a mesoscale feature, the exact location of the snow band has been uncertain in the last few days, as a very narrow swath of accumulating snow is expected. Over the last 2 days, this was generally modeled to focus over northern NJ and possibly into NYC, although latest observations and the short range high-resolution models suggest the heaviest snow squalls are likely on track to move through southeast NY, southwest CT and western-central Long Island during the evening hours, where up to 1/2″ of snow is likely with locally higher totals possible, especially over SE NY. Northern NJ and NYC are currently likely to stay south of this band, but may pick up to a coating of snow from any additional snow squalls that move through.

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