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Mesoscale Discussion 459
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   MESOSCALE DISCUSSION 0459
   NWS STORM PREDICTION CENTER NORMAN OK
   0349 PM CDT MON APR 28 2014

   AREAS AFFECTED...CENTRAL/NE MS AND NW AL

   CONCERNING...TORNADO WATCH 108...

   VALID 282049Z - 282215Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 108 CONTINUES.

   SUMMARY...DANGEROUS TORNADO OUTBREAK UNDERWAY WITH MULTIPLE
   SUPERCELLS CAPABLE OF PRODUCING LONG TRACK...STRONG/VIOLENT
   TORNADOES NEXT FEW HOURS.

   DISCUSSION...MULTIPLE DISCRETE AND CLUSTER SUPERCELLS ARE MOVING
   NEWD FROM CENTRAL MS INTO NW AL.  RADAR AND SPOTTER REPORTS HAVE
   CONFIRMED A DAMAGING TORNADO NEAR TUPELO MS IN THE PAST HOUR...WHILE
   OTHER MORE DISCRETE STORMS HAVE FORMED FARTHER TO S INTO CENTRAL MS.
   ALIGNMENT OF THE STORM INITIATION AND SPACING OF THE STORMS IN
   CENTRAL MS SUGGEST THAT THESE STORMS WILL REMAIN DISCRETE FOR
   SEVERAL HOURS...SUPPORTING THE POTENTIAL FOR LONG-TRACK TORNADOES. 
   ADDITIONALLY...LOCAL VWP/S HAVE SHOWN THE EXPECTED STRENGTHENING OF
   WIND PROFILES AND SOME BACKING OF LOW-LEVEL FLOW ASSOCIATED WITH
   SURFACE PRESSURE FALLS...WHICH IS BOOSTING EFFECTIVE SRH TO NEAR 300
   M2/S2.  STRONG TO VIOLENT TORNADO DAMAGE WILL BE POSSIBLE WITH THE
   MOST INTENSE SUPERCELLS THE NEXT FEW HOURS

   ..THOMPSON.. 04/28/2014


   ATTN...WFO...OHX...BMX...HUN...MEG...JAN...

   LAT...LON   33528809 33018854 32608903 32458944 32728969 33338939
               34328835 34868767 35038739 34948671 34448696 33528809 

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Page last modified: April 28, 2014
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