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Mesoscale Discussion 469
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   MESOSCALE DISCUSSION 0469
   NWS STORM PREDICTION CENTER NORMAN OK
   1120 PM CDT MON APR 28 2014

   AREAS AFFECTED...SRN MS THROUGH CNTRL AL...NWRN GA AND ERN TN

   CONCERNING...TORNADO WATCH 111...113...

   VALID 290420Z - 290545Z

   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 111...113...CONTINUES.

   SUMMARY...THE THREAT FOR STRONG TORNADOES PERSIST WITH GREATEST NEAR
   TERM THREAT ACROSS CNTRL AL INCLUDING THE BIRMINGHAM METRO AREA.
   ALSO WW 111 IN TN WILL BE REPLACED BY ANOTHER WW THAT WILL INCLUDE
   ERN TN AND EXTEND FARTHER EAST INTO WRN NC AND NWRN SC.

   DISCUSSION...BAND OF STORMS PERSIST FROM SRN MS NEWD THROUGH CNTRL
   AL INTO ERN TN. A FEW SUPERCELLS REMAIN WITHIN THIS BAND THE MOST
   DANGEROUS OF WHICH ARE OVER CNTRL AL NEAR THE BIRMINGHAM METRO AREA.
   LARGE HODOGRAPHS WITH 400+ STORM RELATIVE HELICITY IS EVIDENT ON THE
   BIRMINGHAM VWP AND THE WARM SECTOR REMAINS MODERATELY UNSTABLE
   SUPPORTIVE OF STRONG TORNADOES ACROSS AL. FARTHER NE INTO ERN TN
   STORMS HAVE BECOME AT LEAST TEMPORARILY LESS ORGANIZED...BUT GIVEN
   THE FAVORABLE SHEAR ENVIRONMENT AND MARGINAL BUT SUFFICIENT
   INSTABILITY...THE THREAT FOR SUPERCELLS AND TORNADOES WILL PERSIST
   INTO THE OVERNIGHT.

   ..DIAL/HART.. 04/29/2014


   ATTN...WFO...GSP...MRX...FFC...BMX...HUN...MOB...JAN...LIX...

   LAT...LON   31168984 32908781 34618607 35978413 36018295 35138295
               31868704 30698915 31168984 

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Page last modified: April 29, 2014
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