MESOSCALE DISCUSSION 0429
   NWS STORM PREDICTION CENTER NORMAN OK
   0301 PM CDT WED APR 10 2013
   
   AREAS AFFECTED...AR INTO SERN MO AND SRN IL
   
   CONCERNING...TORNADO WATCH 89...90...
   
   VALID 102001Z - 102200Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 89...90...CONTINUES.
   
   SUMMARY...THE SEVERE THREAT CONTINUES TO INCREASE SLOWLY...WITH
   TORNADOES AND HAIL THE MAIN THREATS.
   
   DISCUSSION...RADAR IMAGERY SHOWS STORMS INCREASING FROM THE ARKLATEX
   NNEWD ACROSS WRN AR ALONG OR JUST AHEAD OF THE COLD FRONT...WHICH
   WAS MOVING EWD AT AROUND 10 KT. THESE CELLS HAVE SHOWN WEAK CYCLONIC
   SHEAR NEAR THE UPDRAFT BASES...AND ARE GENERALLY INCREASING IN
   NUMBER. THE LZK HODOGRAPH CONTINUES TO IMPROVE WITH 0-1 SRH AROUND
   200 M2/S2. OTHER STRONG STORMS WERE FORMING NEAR THE ANALYZED
   SURFACE LOW NEAR TXK...WITH THE SHV VWPS SHOWING STRONGER WINDS IN
   THE LOW LEVELS. AS SHEAR CONTINUES TO IMPROVE...SOME OF THESE CELLS
   MAY INTENSIFY AND PRODUCE TORNADOES AND LARGE HAIL AS THEY DEVELOP
   NEWD ACROSS CNTRL AND NRN AR.
   
   OTHER CELLS WERE FORMING IN THE WARM SECTOR FROM NERN AR INTO SERN
   MO...WITH MESOCYCLONES NOTED ON RADAR. THE ENVIRONMENT HERE ALSO
   REMAINS FAVORABLE FOR SUPERCELLS WITH LARGE HAIL AND
   TORNADOES...ALTHOUGH THE MOST DANGEROUS THREAT IS EXPECTED TO
   DEVELOP LATER THIS EVENING AS THE LOW DEEPENS AND LOW LEVEL JET
   INTENSIFIES.
   
   ..JEWELL.. 04/10/2013
   
   
   ATTN...WFO...PAH...ILX...MEG...JAN...LSX...LZK...SGF...SHV...
   
   LAT...LON   36548971 32989146 33009420 36529256 36549273 38799103
               38788803 36548971