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Mesoscale Discussion 60
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   MESOSCALE DISCUSSION 0060
   NWS STORM PREDICTION CENTER NORMAN OK
   1144 AM CST SAT JAN 23 2016

   AREAS AFFECTED...MD...ERN PA...NJ...SE NY AND SRN NEW ENGLAND

   CONCERNING...BLIZZARD 

   VALID 231744Z - 232345Z

   SUMMARY...HEAVY SNOW WILL CONTINUE TO OCCUR OVER THE NEXT FEW HOURS
   FROM MD AND ERN PA ENEWD ACROSS NJ INTO SE NY AND SRN NEW ENGLAND.
   BLIZZARD CONDITIONS WILL BE POSSIBLE ACROSS THE MCD AREA WITH
   SNOWFALL RATES LOCALLY EXCEED 2 INCHES PER HOUR.

   DISCUSSION...LATEST WATER VAPOR IMAGERY SHOWS AN IMPRESSIVE
   UPPER-LEVEL LOW MOVING EWD ACROSS NRN NC WITH A POWERFUL 100 TO 120
   KT MID-LEVEL JET ROUNDING THE ERN SIDE OF THE SYSTEM. A 987 MB SFC
   LOW IS LOCATED 190 STATUTE MILES TO THE SOUTH OF NEW YORK CITY.
   STRONG ISENTROPIC LIFT IS OCCURRING TO THE NORTH OF THE SFC LOW IN A
   BAND FROM SE PA EXTENDING ENEWD ACROSS SRN NEW ENGLAND WHERE THE
   EXIT REGION OF THE MID-LEVEL JET IS ALSO ENHANCING LIFT. IN
   ADDITION...FORECAST SOUNDINGS IN FAR SRN NEW ENGLAND SHOW CONDITIONS
   VERY FAVORABLE FOR HEAVY SNOWFALL WITH A DENDRITIC GROWTH LAYER FROM
   500 TO 600 MB AND AN ISOTHERMAL LAYER FAVORABLE FOR AGGREGATION FROM
   700 TO 900 MB. HEAVY SNOW WILL BE MOST FAVORABLE JUST TO THE NORTH
   OF A DEFORMATION ZONE LOCATED NEAR THE SRN NEW ENGLAND COAST. THE
   RAP KEEPS THIS DEFORMATION ZONE NEARLY STATIONARY WHICH SHOULD KEEP
   A BAND OF HEAVY SNOW IN PLACE WITH A GRADUAL NWD EXPANSION FROM NEAR
   INTERSTATE 80 IN ERN PA ENEWD INTO NEW YORK CITY AND ACROSS SRN NEW
   ENGLAND ALONG INTERSTATE 95. BLIZZARD CONDITIONS WILL CONTINUE TO BE
   POSSIBLE THROUGHOUT THE MCD AREA ACROSS ERN PA...NRN NJ INTO THE NEW
   YORK CITY AND SRN NEW ENGLAND WHERE MULTIPLE LOCATIONS ARE REPORTING
   WIND GUSTS IN THE 35 TO 45 KT RANGE.

   ..BROYLES.. 01/23/2016


   ATTN...WFO...BOX...OKX...ALY...PHI...BGM...CTP...LWX...

   LAT...LON   41687323 41867163 41767087 41437065 41087116 40717240
               40167366 38837545 38647638 38857695 39307745 39947731
               40727644 41157527 41687323 

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Page last modified: January 23, 2016
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