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Mesoscale Discussion 96
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   MESOSCALE DISCUSSION 0096
   NWS STORM PREDICTION CENTER NORMAN OK
   0640 PM CST WED FEB 12 2014

   AREAS AFFECTED...THE CNTRL CAROLINAS AND E-CNTRL GA

   CONCERNING...FREEZING RAIN 

   VALID 130040Z - 130615Z

   SUMMARY...FREEZING RAIN WITH RATES OF 0.03-0.10 IN/HR WILL BECOME
   INCREASINGLY COMMON THIS EVENING AS THE NEXT AREA OF CONVECTIVE
   SHOWERS SHIFTS NEWD FROM SRN GA ATOP PERSISTENT SUB-FREEZING SURFACE
   TEMPERATURES.

   DISCUSSION...PRECIPITATION HAD TEMPORARILY DIMINISHED ACROSS PARTS
   OF ERN GA INTO CNTRL/SRN SC...LIKELY OWING TO SUBSIDENCE IN THE WAKE
   OF EXTENSIVE CONVECTION THAT HAD DISSIPATED ALONG THE S ATLANTIC
   COAST. UPSTREAM...SCATTERED CONVECTION HAS RECENTLY FORMED
   IMMEDIATELY N OF THE SURFACE CYCLONE OVER THE FL BIG BEND. AS ROBUST
   MID-LEVEL DCVA AND ISENTROPIC ASCENT SHIFT NEWD THROUGH THE
   EVENING...THIS CONVECTION WILL EVENTUALLY OVERSPREAD SUB-FREEZING
   SURFACE TEMPERATURES ACROSS THE PIEDMONT AND PARTS OF THE COASTAL
   PLAIN. WITH NELY SURFACE WINDS BACKING TO NLY AS CYCLOGENESIS OCCURS
   OFF THE S ATLANTIC COAST...EROSION OF THE SUB-FREEZING LAYER WILL
   REMAIN SLOW ACROSS THE COASTAL PLAIN. OVER CNTRL NC...INTENSE
   LOW-LEVEL WAA WILL AID IN AN ABOVE-FREEZING WARM NOSE SAMPLED IN 00Z
   CHS/MHX RAOBS TO SHIFT NWWD. THIS SHOULD RESULT IN SNOW
   TRANSITIONING TO SLEET AND FREEZING RAIN BY LATE EVENING.

   ..GRAMS.. 02/13/2014


   ATTN...WFO...AKQ...RAH...ILM...RNK...CHS...CAE...GSP...FFC...

   LAT...LON   34218221 34738123 35827985 36647887 36797842 36737794
               36637786 36297775 35657819 34267957 33528061 33098159
               33128228 33298283 33578305 33898291 34218221 

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Page last modified: March 20, 2014
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