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Mesoscale Discussion 223
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   MESOSCALE DISCUSSION 0223
   NWS STORM PREDICTION CENTER NORMAN OK
   0715 PM CST FRI MAR 02 2012
   
   AREAS AFFECTED...ERN TN...NRN GA...WRN NC AND EXTREME WRN SC
   
   CONCERNING...TORNADO WATCH 61...
   
   VALID 030115Z - 030245Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 61 CONTINUES.
   
   THREAT FOR TORNADOES...A FEW OF WHICH COULD BE STRONG...DAMAGING
   WIND AND VERY LARGE HAIL WILL CONTINUE THE REMAINDER OF THIS EVENING
   ACROSS ERN TN...NRN GA INTO A PORTION OF THE WRN CAROLINAS.
   
   A SSWLY LLJ HAS BEEN STRENGTHENING THE LAST COUPLE OF HOURS OVER
   CNTRL AL...NRN/CNTRL GA...ERN TN AND WRN CAROLINAS IN ASSOCIATION
   WITH AGEOSTROPHIC FORCING ATTENDING A PROGRESSIVE UPPER JET SHIFTING
   NEWD THROUGH THE TN AND OH VALLEYS. THIS HAS RESULTED IN AN INCREASE
   IN HODOGRAPH SIZE WITH EFFECTIVE STORM RELATIVE HELICITIES EXCEEDING
   400 M2/S2. BOUNDARY LAYER COOLING WILL BE SLOWED SOMEWHAT BY WARM
   ADVECTION ATTENDING THE SWLY LLJ...AND BASE OF THE EFFECTIVE INFLOW
   LAYER IS EXPECTED TO REMAIN AT OR NEAR THE SURFACE THIS EVENING.
   THIS ENVIRONMENT WILL CONTINUE TO SUPPORT SUPERCELLS AND LINES WITH
   BOWING STRUCTURES AND A THREAT FOR TORNADOES...DAMAGING WIND AND
   LARGE HAIL. 
   
   ERN EXTENT OF SEVERE THREAT IS LIMITED BY A WEDGE FRONT EXTENDING
   ACROSS WRN NC INTO WRN VA. THERE IS SOME EVIDENCE THAT THIS BOUNDARY
   IS BEGINNING TO LIFT SLOWLY NWD ACROSS SCNTRL NC WHERE THE SEVERE
   THREAT MIGHT INCREASE LATER THIS EVENING.
   
   ..DIAL.. 03/03/2012
   
   
   ATTN...WFO...RNK...GSP...MRX...FFC...OHX...HUN...
   
   LAT...LON   35098568 36108491 36568388 36368160 34708291 34628550
               35098568 
   
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Page last modified: March 03, 2012
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