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Mesoscale Discussion 451
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   MESOSCALE DISCUSSION 0451
   NWS STORM PREDICTION CENTER NORMAN OK
   0741 AM CDT SAT APR 25 2015

   AREAS AFFECTED...SOUTHEAST AL/SOUTHWEST GA AND NORTH FL/FL PANHANDLE

   CONCERNING...TORNADO WATCH 108...

   VALID 251241Z - 251415Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 108 CONTINUES.

   SUMMARY...ISOLATED DAMAGING WINDS ALONG WITH A TORNADO/SOME HAIL
   POTENTIAL WILL CONTINUE TO SHIFT EASTWARD PARTICULARLY ACROSS
   SOUTHEAST AL/FL PANHANDLE INTO SOUTHWEST GA. TORNADO WATCH 108
   CONTINUES UNTIL 17Z. WILL CONTINUE TO MONITOR SHORT-TERM TRENDS AS A
   WATCH ISSUANCE MAY BE NEEDED INTO SOUTH GA AND ADDITIONAL PORTIONS
   OF NORTH FL.

   DISCUSSION...A CONVECTIVE CLUSTER CONTINUES TO PROGRESS EASTWARD
   ACROSS THE FL PANHANDLE/EXTREME SOUTHEAST AL WITHIN A SPATIALLY
   NARROW WARM SECTOR NEAR AND W/SW OF A WARM FRONTAL SEGMENT. WHILE A
   RECENT 12Z OBSERVED SOUNDING FROM TALLAHASSEE FL IS NOT PARTICULARLY
   CONDUCIVE FOR NEAR-SURFACE-BASED STORMS...STEADY MOISTENING IS
   OCCURRING FROM THE WEST-SOUTHWEST WITH AID OF 30-40 KT LOW-LEVEL
   JET. LOW-LEVEL MOISTENING WILL CONTINUE TO OCCUR...WITH SOME SURFACE
   STATIONS HAVING INCREASED 3-5F IN DEWPOINT OVER THE PAST COUPLE OF
   HOURS...IMMEDIATELY AHEAD OF THE CONVECTIVE CLUSTER WITHIN A
   BROADENING WARM SECTOR. VERY STRONG SHEAR WILL REMAIN SUPPORTIVE OF
   WELL-ORGANIZED STORM MODES INCLUDING EMBEDDED SUPERCELL STRUCTURES.

   ..GUYER.. 04/25/2015


   ATTN...WFO...JAX...TAE...BMX...MOB...

   LAT...LON   30428723 31638625 31548365 30888300 29838384 30218620
               30428723 

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Page last modified: April 25, 2015
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