MESOSCALE DISCUSSION 0334
   NWS STORM PREDICTION CENTER NORMAN OK
   1023 PM CDT SUN APR 03 2011
   
   AREAS AFFECTED...SRN WI...ERN IA...NRN IL
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 86...
   
   VALID 040323Z - 040430Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 86
   CONTINUES.
   
   03Z ANALYSIS PLACED COLD FRONT FROM KMKE-KRFD-NERN MO.  CONSIDERABLE
   ELEVATED TSTMS HAVE FORMED FROM ERN IA INTO SRN WI WEST OF THE COLD
   FRONT AS ANAFRONTAL SITUATION DEVELOPS WITH THE APPROACHING UPPER
   TROUGH. MID-LEVEL LAPSE RATES RANGING FROM 6.5-8.5 DEG C PER KM
   EXISTS ACROSS THE REGION AND LARGE HAIL WILL BE LIKELY WITH THESE
   STORMS THROUGH EARLY MORNING MONDAY.
   
   MEANWHILE...TSTMS APPROACHING THE CHICAGOLAND MAY BE MORE SFC-BASED
   AND GIVEN DAVENPORT VWP SHOWING 50 KTS OF WSW FLOW AT HALF OF A
   KILOMETER AGL...DAMAGING WINDS ARE NOT OUT OF THE QUESTION IN
   CHICAGO METRO FROM 0330-05Z.  OTHERWISE...LARGE HAIL WILL ALSO BE
   LIKELY.
   
   ..RACY.. 04/04/2011
   
   
   ATTN...WFO...LOT...MKX...DVN...ARX...
   
   LAT...LON   41619118 43388972 43748842 43318743 42548742 41718768
               41418820 41708958 41189138 41619118