MESOSCALE DISCUSSION 1036
   NWS STORM PREDICTION CENTER NORMAN OK
   0911 AM CDT THU JUN 07 2007
   
   AREAS AFFECTED...NWRN MO...MUCH OF IA AND SERN MN
   
   CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY 
   
   VALID 071411Z - 071515Z
   
   STORMS ARE EXPECTED TO INCREASE IN INTENSITY FROM SWRN AND CNTRL IA
   AND NWRN MO DURING THE NEXT COUPLE HOURS. THREAT WILL INCREASE FOR
   SUPERCELLS WITH ISOLATED TORNADOES AND LARGE HAIL. 
   
   THIS MORNING SCATTERED CONVECTION WAS DEVELOPING IN VICINITY OF A
   COLD FRONT NERN KS THROUGH SWRN IA. A STRONG SWLY LOW LEVEL JET WILL
   PERSIST WITHIN THE PRE-FRONTAL WARM SECTOR...MAINTAINING MID TO
   UPPER 60S DEWPOINTS IN THIS REGION BENEATH STEEP MID LEVEL LAPSE
   RATES. THE MORNING TOPEKA SOUNDING SHOWED LITTLE CONVECTIVE
   INHIBITION ONCE TEMPERATURES WARM TO NEAR 80F. AS THE BOUNDARY LAYER
   WARMS...MLCAPE FROM 2000 TO 2500 J/KG APPEARS LIKELY. LARGE LOW
   LEVEL HODOGRAPHS WITH 0-1 KM HELICITY FROM 300-400 M2/S2 AND STRONG
   DEEP LAYER SHEAR WILL SUPPORT A THREAT FOR SUPERCELLS WITH LOW LEVEL
   MESOCYCLONES CAPABLE OF PRODUCING LARGE HAIL AND A FEW TORNADOES.
   
   ..DIAL.. 06/07/2007
   
   
   ATTN...WFO...DVN...ARX...MPX...DMX...EAX...OAX...
   
   39909519 40809518 44039447 44589265 43279090 40919220
   39679389