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Mesoscale Discussion 486
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   MESOSCALE DISCUSSION 0486
   NWS STORM PREDICTION CENTER NORMAN OK
   1129 PM CDT TUE APR 29 2014

   AREAS AFFECTED...THE WRN FL PANHANDLE

   CONCERNING...TORNADO WATCH 119...

   VALID 300429Z - 300630Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 119 CONTINUES.

   SUMMARY...THREAT FOR A COUPLE TORNADOES AND DAMAGING WIND GUSTS WILL
   PERSIST AS STORMS CONTINUE EWD THROUGH THE WRN FL PANHANDLE. SOME
   SEVERE THREAT ALSO EXISTS ACROSS EXTREME SERN AL...AND IF NECESSARY
   THE WW CAN BE LOCALLY EXTENDED FOR ANOTHER ROW OF COUNTIES FARTHER
   NORTH.

   DISCUSSION...STORMS HAVE EVOLVED INTO A DOMINANT LINEAR MODE WITH AN
   HP SUPERCELL ALONG NRN PORTION OF THE LINE IN WALTON COUNTY FL
   MOVING EAST AT AROUND 20 KT. THE STORMS ARE LOCATED NORTH OF A LARGE
   CONVECTIVE OUTFLOW BOUNDARY SITUATED OVER THE NRN GULF WHERE
   LOW-LEVEL WINDS ARE BACKED TO ESELY. HOWEVER...THE STORMS ARE
   PROBABLY NOT INGESTING THE VORTICITY RICH AIR NEAR THE SFC DUE TO
   THE STABILIZING EFFECTS OF NOCTURNAL COOLING. NEVERTHELESS...MOIST
   INFLOW ABOVE THE SHALLOW STABLE SFC LAYER ALONG A 30 KT SLY LLJ AND
   STRONG EFFECTIVE SHEAR WILL LIKELY MAINTAIN A FORWARD PROPAGATING
   MCS WITH EMBEDDED ORGANIZED STRUCTURES NEXT COUPLE HOURS.

   ..DIAL.. 04/30/2014


   ATTN...WFO...TAE...MOB...

   LAT...LON   30388651 30928603 30948523 29938537 29858624 30388651 

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Page last modified: April 30, 2014
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