MESOSCALE DISCUSSION 0430
   NWS STORM PREDICTION CENTER NORMAN OK
   1258 PM CDT FRI APR 10 2009
   
   AREAS AFFECTED...NERN MS...NRN AL THROUGH MIDDLE TN
   
   CONCERNING...TORNADO WATCH 132...
   
   VALID 101758Z - 101930Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 132 CONTINUES.
   
   THREAT FOR STRONG/DAMAGING TORNADOES WILL LIKELY PERSIST NEXT FEW
   HOURS WITH STORMS MOVING THROUGH MIDDLE TN INTO NRN AL. LARGE HAIL
   AND DAMAGING WIND MAY ALSO ACCOMPANY SOME OF THE STRONGER STORMS.
   
   COUPLE OF LINES OF MOSTLY DISCRETE SUPERCELLS CONTINUE FROM MIDDLE
   TN SWWD THROUGH EXTREME NERN MS INTO NW AL. THE ATMOSPHERE REMAINS
   MODERATELY UNSTABLE WITH MINIMAL CONVECTIVE INHIBITION ALLOWING
   STORMS TO CONTINUE DEVELOPING ALONG CLOUD STREETS IN WARM SECTOR
   AHEAD OF THE EWD ADVANCING COLD FRONT. BULK SHEAR OF 50+ KT AND
   LARGE HODOGRAPHS WITH 0-1 KM STORM RELATIVE HELICITY FROM 200-300
   M2/S2 ASSOCIATED WITH THE EWD ADVANCING SHORTWAVE TROUGH WILL
   CONTINUE TO PROMOTE SUPERCELLS WITH LOW LEVEL MESOCYCLONES. GIVEN
   THE PROPENSITY TO MAINTAIN DISCRETE STORMS WITHIN THE FAVORABLY
   SHEARED AND MODERATELY UNSTABLE ENVIRONMENT...SOME SUPERCELLS WILL
   REMAIN CAPABLE OF PRODUCING STRONG TORNADOES NEXT FEW HOURS.
   
   ..DIAL.. 04/10/2009
   
   
   ATTN...WFO...MRX...OHX...BMX...HUN...MEG...
   
   LAT...LON   35588530 34408617 33568771 34038864 35298742 36538647
               36358553 35588530