MESOSCALE DISCUSSION 0821
   NWS STORM PREDICTION CENTER NORMAN OK
   0835 PM CDT WED MAY 13 2009
   
   AREAS AFFECTED...NERN MO/NRN AND CENTRAL IL
   
   CONCERNING...TORNADO WATCH 293...
   
   VALID 140135Z - 140300Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 293 CONTINUES.
   
   SEVERE/ISOLATED TORNADO THREAT CONTINUES.
   
   RADAR LOOP REVEALS BROKEN BANDS OF STORMS PROGRESSING EWD AHEAD OF
   THE ADVANCING COLD FRONT...WHERE 500 TO 1500 J/KG MIXED-LAYER CAPE
   PERSISTS PER OBJECTIVE ANALYSES.  AN OVERALL/SLOW WEAKENING TREND
   APPEARS TO HAVE BEGUN IN CONJUNCTION WITH SOME DIURNAL
   STABILIZATION...BUT EXPECT ISOLATED STRONG/SEVERE STORMS TO
   CONTINUE.  STORMS MAY LINGER ACROSS WW 293 BEYOND THE SCHEDULED
   14/03Z EXPIRATION -- WHICH COULD REQUIRE A LOCAL EXTENTION OF THE
   WATCH...OTHERWISE MUCH OF THE CONVECTION WILL CONTINUE SHIFTING INTO
   WW 294 OVER THE NEXT 1-2 HOURS.
   
   ..GOSS.. 05/14/2009
   
   
   ATTN...WFO...LOT...ILX...MKX...LSX...DVN...EAX...
   
   LAT...LON   39359282 39739295 40849119 42608987 42568769 40148761
               39459006 39359282