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Mesoscale Discussion 228
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   MESOSCALE DISCUSSION 0228
   NWS STORM PREDICTION CENTER NORMAN OK
   0258 AM CST SAT MAR 03 2012
   
   AREAS AFFECTED...ERN GA...CNTRL SC...CNTRL NC
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 66...
   
   VALID 030858Z - 031030Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 66
   CONTINUES.
   
   A TORNADO THREAT WILL LIKELY CONTINUE THROUGH DAYBREAK FROM CNTRL NC
   SWWD ACROSS SC INTO ERN GA DOWNSTREAM FROM WW 66. A NEW TORNADO
   WATCH IS BEING CONSIDERED ALTHOUGH THE THREAT IS EXPECTED TO REMAIN
   ISOLATED.
   
   A LINEAR MCS IS ONGOING FROM NEAR GREENSBORO NC ON AN OLD WEDGE
   FRONT SWWD TO NEAR ATHENS GA NEAR A PRE-FRONTAL TROUGH . SFC
   DEWPOINTS AHEAD OF LINE OF STORMS ARE IN THE LOWER TO MID 60S F AND
   INSTABILITY IS SUFFICIENT TO KEEP A THREAT FOR STRONG CONVECTION
   GOING THROUGH DAYBREAK. FORECAST SOUNDINGS ACROSS THE MCD AREA VERY
   SHOW STRONG DEEP LAYER SHEAR WITH 0-6 KM SHEAR VALUES IN THE 75 TO
   85 KT RANGE. IN ADDITION...A CONSOLIDATED 40 TO 50 KT LOW-LEVEL JET
   MAX IS CREATING FAVORABLE BOUNDARY LAYER SHEAR CONDITIONS FOR A
   TORNADO THREAT. AN ISOLATED TORNADO AND WIND DAMAGE THREAT SHOULD
   OCCUR WITH BOWING STRUCTURES ON THE LEADING EDGE OF THE LINE. A
   TORNADO WILL ALSO BE POSSIBLE WITH ROTATING DISCRETE CELLS AHEAD OF
   THE LINE THOUGH THE TORNADO THREAT IS QUESTIONABLE DUE TO THE
   MARGINAL INSTABILITY. THE NEED FOR A NEW WATCH IS UNCERTAIN ATTM.
   
   ..BROYLES.. 03/03/2012
   
   
   ATTN...WFO...MHX...RAH...ILM...CHS...CAE...GSP...FFC...
   
   LAT...LON   36057931 35258100 33798299 32968296 32668257 32768189
               33668071 34517936 35417753 36117740 36437793 36057931 
   
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Page last modified: March 03, 2012
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