MESOSCALE DISCUSSION 0823
   NWS STORM PREDICTION CENTER NORMAN OK
   1127 PM CDT WED MAY 13 2009
   
   AREAS AFFECTED...SRN AND ERN MO/SRN IL/SRN IN/WRN KY/NWRN TN/CENTRAL
   AND ERN OK/MUCH OF AR
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 298...299...
   
   VALID 140427Z - 140600Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   298...299...CONTINUES.
   
   BROKEN BAND OF STORMS -- WITH EMBEDDED SUPERCELLS -- CONTINUES
   MOVING EWD ACROSS PARTS OF IL/MO/OK/NWRN AR.  NEW CONVECTION
   INCREASING ACROSS ERN PORTIONS OF THE TWO WATCHES -- OVER SRN
   IL/SERN MO/NWRN AR -- MAY REQUIRE NW WW ISSUANCE.
   
   BAND OF WIDESPREAD STRONG/SEVERE STORMS CONTINUES SHIFTING SLOWLY
   SEWD ACROSS WW 298 AND 299 ATTM...ALONG AND AHEAD OF THE MAIN COLD
   FRONT.  OTHER STORMS CONTINUE TO INCREASE E OF THE MAIN CONVECTIVE
   LINE...LIKELY IN RESPONSE TO AN INCREASE /60 KT/ SWLY LOW-LEVEL JET.
    WITH MODERATE INSTABILITY PERSISTING IN THE WARM SECTOR...THESE
   STORMS SHOULD CONTINUE TO SLOWLY INCREASE -- WITH DEGREE OF THREAT
   POSSIBLY REQUIRING AN ADDITIONAL WW E OF THE CURRENT WATCHES. 
   OTHERWISE...EXPECT A CONTINUED THREAT FOR LARGE HAIL...DAMAGING
   WINDS...AND AN ISOLATED TORNADO WITH THE MAIN CONVECTIVE BAND AS IT
   SLOWLY PROGRESSES ACROSS WW 298/299.
   
   ..GOSS.. 05/14/2009
   
   
   ATTN...WFO...LMK...IND...PAH...ILX...MEG...LSX...LZK...SGF...
   SHV...TSA...OUN...
   
   LAT...LON   33999828 34809832 37659342 39479038 39528539 37898609
               34009287 33999828