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Mesoscale Discussion 398
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   MESOSCALE DISCUSSION 0398
   NWS STORM PREDICTION CENTER NORMAN OK
   0144 PM CDT MON APR 20 2015

   AREAS AFFECTED...NERN FL...FAR SERN GA

   CONCERNING...SEVERE THUNDERSTORM WATCH 86...

   VALID 201844Z - 202015Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 86
   CONTINUES.

   SUMMARY...A HAIL AND WIND THREAT PERSISTS ACROSS THE REMAINDER OF
   SEVERE THUNDERSTORM WATCH 86.

   DISCUSSION...STORMS CONTINUE TO PROPAGATE EWD ACROSS NRN FL ON THE
   LEADING EDGE OF AN OUTFLOW BOUNDARY. LOW-LEVEL FLOW IS WEAK BUT
   INSTABILITY REMAINS SUFFICIENT FOR STRONG WINDS AND HAIL GIVEN
   AROUND 40 KT MEAN WINDS AS WELL AS COOL TEMPERATURES
   ALOFT...RESPECTIVELY. GPS PWAT SENSORS ARE ALSO SUGGESTING AN
   INCREASE IN INSTABILITY WITH VALUES RISING FROM JUST UNDER 1.00 INCH
   TO OVER 1.30 INCHES SINCE 15Z.

   ..JEWELL.. 04/20/2015


   ATTN...WFO...MLB...TBW...JAX...

   LAT...LON   28698341 29818247 30748189 30758108 29768061 28658057
               28398139 28248214 28188314 28698341 

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Page last modified: April 20, 2015
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