MESOSCALE DISCUSSION 0584
   NWS STORM PREDICTION CENTER NORMAN OK
   0204 AM CDT TUE APR 26 2011
   
   AREAS AFFECTED...NWRN AL...MIDDLE TN...AND CNTRL KY
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 211...
   
   VALID 260704Z - 260800Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 211
   CONTINUES.
   
   OVERALL TREND HAS BEEN FOR SQUALL LINE TO SLOWLY WEAKEN...BUT SOME
   THREAT FOR ISOLATED DAMAGING WIND COULD PERSIST AT LEAST A COUPLE
   ROWS OF COUNTIES EAST OF WW 211. AT THIS TIME OVERALL SEVERE THREAT
   DOES NOT APPEAR SUFFICIENT FOR ANOTHER WW ISSUANCE. HOWEVER...IF
   NECESSARY...WW 211 CAN BE EXTENDED FARTHER EAST INCLUDING CWA OF
   HUNTSVILLE...NASHVILLE AND LOUISVILLE.
   
   SQUALL LINE EXTENDS FROM CNTRL KY THROUGH MIDDLE TN...NWRN AL AND
   NERN MS MOVING EAST AT 30-40 KT. TENDENCY HAS BEEN FOR STORMS TO
   WEAKEN AS THEY MOVE INTO A MORE MARGINAL THERMODYNAMIC ENVIRONMENT.
   HOWEVER...WEAKENING TREND HAS GENERALLY BEEN SLOW...AND STORMS COULD
   REMAIN CAPABLE OF PRODUCING ISOLATED STRONG WIND GUSTS SOME DISTANCE
   EAST OF WW 211.
   
   ..DIAL.. 04/26/2011
   
   
   ATTN...WFO...LMK...OHX...BMX...HUN...
   
   LAT...LON   34878726 35808671 36868656 37528671 37868641 37608566
               36588546 35518580 34968617 34568664 34178719 34058781
               34268786 34878726