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Mesoscale Discussion 195
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   MESOSCALE DISCUSSION 0195
   NWS STORM PREDICTION CENTER NORMAN OK
   0328 PM CDT SUN MAR 16 2014

   AREAS AFFECTED...PORTIONS OF CENTRAL/ERN WV INCLUDING THE
   PANHANDLE...CENTRAL/NRN VA...MUCH OF MD...DC

   CONCERNING...HEAVY SNOW 

   VALID 162028Z - 170230Z

   SUMMARY...SNOW WILL DEVELOP THROUGH EARLY EVENING WITH RATES OF ONE
   INCH/HR DEVELOPING BY...AND ESPECIALLY BEYOND...02Z.

   DISCUSSION...A LARGE AREA OF PRECIPITATION CONTINUES TO LIFT NEWD IN
   ASSOCIATION WITH ISENTROPIC LIFT AHEAD OF A DE-AMPLIFYING UPPER LOW
   OVER THE MID-MS VALLEY. A DIFFUSE SFC LOW...CURRENTLY OVER NERN
   MS...WILL MOVE INTO THE SRN APPALACHIANS BY 02Z. RESULTING N/NE
   LOW-LEVEL FLOW WILL CONTINUE TO ADVECT VERY DRY AIR INTO THE
   DISCUSSION AREA...AND INITIALLY DRY LOWER LEVELS OF THE ATMOSPHERE
   WILL COOL/SATURATE WITH TIME ALLOWING FOR SNOW TO BECOME THE
   DOMINANT P-TYPE...BECOMING WIDESPREAD DURING THE EVENING HOURS.
   LATEST GUIDANCE CONTINUES TO DEPICT A STRENGTHENING BAROCLINIC ZONE
   ACROSS THE DISCUSSION AREA THIS EVENING WITHIN CONFLUENT 700 MB
   FLOW...WITH DEFORMATION-INDUCED FRONTOGENESIS EXPECTED TO DEVELOP
   WITHIN THE 800 MB TO 700 MB LAYER. MESOSCALE BANDING WILL LIKELY
   PRODUCE SNOWFALL RATES OF ONE INCH/HR BY...AND ESPECIALLY
   BEYOND...02Z.

   ..BUNTING.. 03/16/2014


   ATTN...WFO...PHI...AKQ...LWX...RNK...PBZ...RLX...

   LAT...LON   39128038 39517834 39517611 38917585 38287607 37887711
               37677889 37668001 37788053 38258095 39128038 

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Page last modified: March 20, 2014
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