MESOSCALE DISCUSSION 1249
   NWS STORM PREDICTION CENTER NORMAN OK
   0400 PM CDT WED JUN 08 2005
   
   AREAS AFFECTED...ERN KS/WRN-CENTRAL MO
   
   CONCERNING...TORNADO WATCH 437...
   
   VALID 082100Z - 082200Z
   
   PARAMETERS REMAIN FAVORABLE FOR VERY LARGE HAIL...TORNADOES AND
   DAMAGING WINDS ACROSS MUCH OF WW 437.  SURFACE HEATING HAS CONTINUED
   WITHIN A VERY MOIST AIR MASS /SURFACE DEWPOINTS IN THE MID-UPPER
   70S/ RESULTING IN AN EXTREMELY UNSTABLE AIR MASS /MLCAPE VALUES OF
   4000-5000 J/KG.  REGIONAL RADARS/VIS IMAGERY INDICATED TCU
   DEVELOPING ALONG A LOW LEVEL CONVERGENCE BOUNDARY AHEAD OF THE COLD
   FRONT...WITH THIS CLOUD DEVELOPMENT AT THE PRESENT TIME BETWEEN
   EMP-STJ.  DEEP LAYER AND LOW LEVEL SHEAR PER MODIFIED OLATHE KANSAS
   WIND PROFILER FOR CURRENT OJC SURFACE WIND HAVE BECOME FAVORABLE FOR
   ROTATING STORMS AND A HEIGHTENED POTENTIAL FOR A TORNADO...GIVEN
   /SFC-6 KM SHEAR AT 32 KT AND 0-3 KM SRH AROUND 150 M2/S2.
   
   THREAT FOR DAMAGING WINDS AND HAIL WILL REMAIN LIKELY WITH STORMS
   OVER THE ERN PORTION OF WW 437 AS WELL ESTABLISHED COLD POOL IN WAKE
   OF E-W ORIENTED SQUALL LINE OVER CENTRAL MO MOVES SWD. SURFACE
   TEMPERATURE GRADIENT BETWEEN COLD POOL AND PRE-CONVECTIVE AIR MASS
   RANGES FROM 25-30 DEGREES.  STORMS WILL CONTINUE TO DEVELOP ACROSS
   ERN PORTION OF WW THIS AFTERNOON...AS SQUALL LINE MOVES INTO VERY
   UNSTABLE AIR MASS /MLCAPE 2500-4000 J/KG/.
   
   ..PETERS.. 06/08/2005
   
   
   ATTN...WFO...LSX...SGF...EAX...TOP...ICT...
   
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