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Mesoscale Discussion 61
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   MESOSCALE DISCUSSION 0061
   NWS STORM PREDICTION CENTER NORMAN OK
   0540 PM CST SAT JAN 23 2016

   AREAS AFFECTED...PORTIONS OF THE MID-ATLANTIC AND SOUTHERN NEW
   ENGLAND

   CONCERNING...BLIZZARD 

   VALID 232340Z - 240345Z

   SUMMARY...SNOWFALL RATES WILL SLOWLY DIMINISH ACROSS MUCH OF THE
   MID-ATLANTIC AND SOUTHERN NEW ENGLAND THIS EVENING...BUT GUSTY WINDS
   WILL MAINTAIN AREAS OF BLOWING SNOW. ADDITIONALLY...POCKETS OF
   BLIZZARD CONDITIONS AND HEAVY SNOWFALL RATES /UPWARDS OF 1-2 INCHES
   PER HOUR/ MAY PERSIST A FEW MORE HOURS ACROSS THE REGION.

   DISCUSSION...THE LATEST SFC ANALYSIS INDICATES PRESSURE FALLS AROUND
   1-2 MB/HR AT BUOYS SOUTH OF NOVA SCOTIA...AS LOW PRESSURE DEEPENS
   SOUTHEAST OF THE NEW ENGLAND COAST. AS INTENSE ISENTROPIC ASCENT
   SHIFTS FARTHER EAST...AND MID-LEVEL DEFORMATION MOVES NORTHEAST
   TOWARDS THE CANADIAN MARITIMES...SNOWFALL RATES ACROSS THE
   MID-ATLANTIC/SOUTHERN NEW ENGLAND SHOULD SLOWLY DIMINISH THIS
   EVENING. NONETHELESS...RECENT OBSERVATIONS FROM SEVERAL SITES STILL
   INDICATE HEAVY SNOWFALL...WITH BLIZZARD CONDITIONS REPORTED AT JFK
   AND ISLIP NY. MOREOVER...KDIX AND KOKX ZDR/KDP DATA ILLUSTRATE A FEW
   BANDS OF APPRECIABLE DENDRITIC/CRYSTAL GROWTH ALOFT...WHICH IS
   SUSTAINING POCKETS OF ENHANCED SNOWFALL RATES UPWARDS OF 1-2 INCHES
   PER HOUR. IN TURN...A FEW AREAS OF HEAVY SNOW/BLIZZARD CONDITIONS
   MAY CONTINUE INTO THE LATE EVENING HOURS.

   ADDITIONALLY...AS MID-LEVEL FRONTOGENETIC FORCING SHIFTS EASTWARD
   OFF THE SOUTHERN NEW ENGLAND COAST...A BAND OF HEAVY SNOW/BLIZZARD
   CONDITIONS MAY PIVOT ACROSS SOUTHEASTERN MA /ESPECIALLY NANTUCKET
   AND EASTERN CAPE COD/ LATE THIS EVENING...BEFORE SHIFTING OFFSHORE
   OVERNIGHT.

   ..PICCA.. 01/23/2016


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

   LAT...LON   38867558 38217643 38117696 38397763 38567788 39187808
               40057728 41527374 42327119 42066998 41246976 40947103
               40297312 38867558 

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Page last modified: January 24, 2016
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