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Mesoscale Discussion 233
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   MESOSCALE DISCUSSION 0233
   NWS STORM PREDICTION CENTER NORMAN OK
   0554 AM CST TUE FEB 26 2013
   
   AREAS AFFECTED...FAR NWRN NC...SERN/E-CNTRL WV...PORTIONS OF WRN VA
   
   CONCERNING...FREEZING RAIN 
   
   VALID 261154Z - 261600Z
   
   SUMMARY...FREEZING RAIN IS PROBABLE WITH RATES AOA 0.02 IN/HR
   THROUGH MID MORNING OVER FAR NWRN NC...AND THROUGH MIDDAY ACROSS
   SERN/E-CNTRL WV AND PORTIONS OF WRN VA.
   
   DISCUSSION...AT 1130Z...LARGE SHIELD OF PRECIPITATION WAS SPREADING
   NNEWD ACROSS THE WRN CAROLINAS AND ERN TN AHEAD OF A DEEP-LAYER
   CYCLONE LOCATED OVER SRN MO/NRN AR. MEANWHILE...A WEDGE OF SURFACE
   HIGH PRESSURE EXTENDS SWWD FROM THE MID ATLANTIC REGION INTO GA.
   TEMPERATURES ACROSS VA/WV AND WRN NC GENERALLY RESIDE IN THE UPPER
   20S TO LOW/MID 30S. HOWEVER...DEWPOINTS ARE IN THE TEENS AND
   20S...WHICH WILL CAUSE SURFACE TEMPERATURES TO COOL AOB FREEZING DUE
   TO WET BULB PROCESSES AS MODERATE PRECIPITATION RATES SPREAD ACROSS
   THE AREA. IN ADDITION...A LAYER OF ABOVE FREEZING AIR EXISTS
   IMMEDIATELY ABOVE THE SURFACE...WITH 850 MB TEMPERATURES RANGING
   FROM 2-6 DEG C. THUS...FREEZING RAIN WILL BE PROBABLE...WITH RATES
   AOA 0.02 IN/HR. FREEZING RAIN WILL OCCUR OVER FAR NWRN NC THROUGH
   MID MORNING...AND PERSIST ACROSS SERN/E-CNTRL WV AND PORTIONS OF WRN
   VA THROUGH AT LEAST MIDDAY.
   
   ..GARNER.. 02/26/2013
   
   
   ATTN...WFO...LWX...RAH...RNK...RLX...GSP...
   
   LAT...LON   38528030 38577935 38127887 36697941 36137996 35868094
               36018130 37038142 38528030 
   
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Page last modified: February 26, 2013
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