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Mesoscale Discussion 1902
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   MESOSCALE DISCUSSION 1902
   NWS STORM PREDICTION CENTER NORMAN OK
   1105 AM CST SUN NOV 02 2014

   AREAS AFFECTED...SOUTHERN AND EASTERN MAINE

   CONCERNING...HEAVY SNOW 

   VALID 021705Z - 022000Z

   SUMMARY...MODERATE TO HEAVY SNOW WITH RATES LOCALLY AROUND 1 INCH
   PER HOUR REMAIN LIKELY FROM SRN THROUGH EASTERN MAINE THROUGH
   MID-AFTERNOON FOLLOWED BY A GRADUAL DECREASE IN OVERALL INTENSITIES
   FROM SW TO NE BY EARLY EVENING.

   DISCUSSION...BANDS OF MODERATE TO HEAVY SNOW EXTEND FROM SRN THROUGH
   ERN MAINE WITHIN A NNE-SSW ORIENTED DEFORMATION AXIS. FRONTOGENETIC
   FORCING AND DEEP-LAYER ASCENT WILL REMAIN MAXIMIZED NEXT FEW HOURS
   AS NWD ADVANCING UPPER JET CIRCULATION INTERACTS WITH THE LOW-LEVEL
   BAROCLINIC ZONE. FORECAST SOUNDINGS INDICATE PRESENCE OF DEEP
   ISOTHERMAL LAYERS AROUND -5C BETWEEN 900 AND 700 MB WHICH SHOULD
   ENHANCE SNOWFLAKE GROWTH EFFICIENCY THROUGH AGGREGATION. WITH NEAR
   SFC TEMPERATURES AT OR SLIGHTLY ABOVE 32F...MUCH OF THE SNOW WILL
   PROBABLY REMAIN WET IN CHARACTER. NEVERTHELESS...SNOWFALL RATES ARE
   EXPECTED TO OCCASIONALLY APPROACH OR LOCALLY EXCEED 1 INCH PER HOUR
   AS ZONE OF STRONG FORCING FOR ASCENT DEVELOPS NEWD THROUGH THIS
   REGION NEXT FEW HOURS.

   ..DIAL.. 11/02/2014


   ATTN...WFO...CAR...GYX...

   LAT...LON   44266942 44257010 45396966 46126831 45956767 45426745
               44906759 44576862 44266942 

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Page last modified: November 02, 2014
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