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Mesoscale Discussion 658
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   MESOSCALE DISCUSSION 0658
   NWS STORM PREDICTION CENTER NORMAN OK
   0126 AM CDT FRI MAY 20 2016

   AREAS AFFECTED...SE MS...SRN AL AND WRN FL PANHANDLE

   CONCERNING...SEVERE THUNDERSTORM WATCH 183...184...

   VALID 200626Z - 200830Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   183...184...CONTINUES.

   SUMMARY...A THREAT FOR WIND DAMAGE AND HAIL WILL CONTINUE FOR
   SEVERAL MORE HOURS AS A LINE OF STORMS MOVES EWD ACROSS SRN AL AND
   INTO THE WRN FL PANHANDLE. NEW WW ISSUANCE MAY NEED TO BE CONSIDERED
   TO THE EAST OF WW 184 AS THE LINE APPROACHES THE ERN EDGE OF THE
   WATCH EARLY THIS MORNING.

   DISCUSSION...THE LATEST RADAR DATA FROM MOBILE SHOWS A WELL
   ORGANIZED BOWING LINE SEGMENT WITH A MESOVORTEX IN ITS WAKE. THIS
   QLCS IS LOCATED ALONG THE NRN EDGE OF MODERATE INSTABILITY WHERE THE
   RAP IS ESTIMATING MLCAPE IN THE 1500 TO 2000 J/KG RANGE. IN ADDITION
   TO THE MOIST AND UNSTABLE AIRMASS...STRONG ASCENT ASSOCIATED WITH
   THE MCV AND A 60 TO 75 KT MID-LEVEL JET ANALYZED JUST BEHIND THE
   QLCS...IS PROVIDING SUPPORT FOR THE ORGANIZED BOWING STRUCTURE. THE
   QLCS IS MOVING EWD AT ABOUT 45 KT WHICH WILL MAKE WIND DAMAGE LIKELY
   ALONG THE LEADING EDGE. THE SEVERE THREAT WILL CONTINUE FOR SEVERAL
   MORE HOURS ACROSS SRN AL AND INTO THE WRN FL PANHANDLE BUT MAY START
   TO BECOME MORE ISOLATED TOWARD DAYBREAK.

   ..BROYLES/THOMPSON.. 05/20/2016


   ATTN...WFO...TAE...BMX...MOB...JAN...LIX...

   LAT...LON   31648908 31058845 30218836 29628842 29568761 29858626
               30468583 31148580 31708622 32058753 31648908 

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