MESOSCALE DISCUSSION 2135
   NWS STORM PREDICTION CENTER NORMAN OK
   0410 PM CDT FRI AUG 27 2004
   
   AREAS AFFECTED...SRN IA/FAR NE MO INTO NW IL
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 272110Z - 272315Z
   
   AT LEAST ISOLD SEVERE THREAT WILL EXIST FROM SCNTRL/SE IA...FAR NE
   MO...AND PERHAPS NW IL REMAINDER OF AFTERNOON/EVENING. PRIMARY
   HAZARD EXPECTED TO BE LARGE HAIL.
   
   SYNOPTIC FRONT CONTINUES TO SHIFT SWD ACROSS SRN IA/NRN MO...WHILE
   AIRMASS ACROSS FAR NE MO/NW IL HAS BEEN SLOW TO RECOVER IN WAKE OF
   MORNING MCS. TSTM COVERAGE EXPECTED TO INCREASE REMAINDER OF
   AFTERNOON/EVENING INVOF FRONTAL ZONE AS BACKGROUND FORCING FOR
   ASCENT OVERSPREADS THE REGION.
   
   BULK OF ACTIVITY WILL LIKELY REMAIN BASED ABOVE SURFACE OWING TO
   REMNANT COLD POOL FROM MORNING MCS AND ASSOCIATED SURFACE BASED
   CINH. MUCAPE OF 2000-2500 J/KG AND SUFFICIENT CLOUD BEARING SHEAR
   /SUPPORTED BY 30 KT MID LEVEL FLOW/ WILL BE FAVORABLE FOR LARGE HAIL
   WITH THE STRONGEST TSTMS. AIRMASS RECOVERY INTO NW IL WILL BE AIDED
   BY INCREASING SWLY LLJ THIS EVENING. TRENDS WILL CONTINUE TO BE
   MONITORED.
   
   ..GUYER.. 08/27/2004
   
   
   ATTN...WFO...LOT...ILX...LSX...DVN...DMX...EAX...
   
   40669385 41119393 41649308 42149115 41978982 41478897
   40688910 39839082 39869173 40009218 40289263