MESOSCALE DISCUSSION 1800
   NWS STORM PREDICTION CENTER NORMAN OK
   0738 PM CDT SAT JUL 30 2011
   
   AREAS AFFECTED...WESTERN WI
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 310038Z - 310215Z
   
   A SEVERE THREAT MAY INCREASE THROUGH MID-EVENING INTO WESTERN
   WI...SUCH THAT A WATCH OR LOCAL WFO EXTENSION MAY BE NEEDED.
   
   NEAR/JUST AHEAD OF A COLD FRONT...A BROKEN CORRIDOR OF DEEP
   CONVECTION INCLUDING SEVERAL SUPERCELLS CONTINUES TO GRADUALLY
   SPREAD EAST-SOUTHEASTWARD ACROSS CENTRAL MN EARLY THIS EVENING.
   OTHER...BUT LESS VIGOROUS...CUMULIFORM DEVELOPMENT HAS ALSO BEEN
   PERSISTENT ACROSS NORTHWEST WI IN VICINITY OF AN OUTFLOW BOUNDARY
   THAT ARCS GENERALLY NORTHWEST-SOUTHEAST ACROSS WESTERN/SOUTHERN WI.
   THE ADJACENT AIRMASS/OUTFLOW BOUNDARY ITSELF HAS QUICKLY MODIFIED
   ACROSS MUCH OF WEST-CENTRAL /AND TO A LESSER EXTENT NORTHWEST/
   WI...WITH SURFACE TEMPERATURES INTO THE 80S F. ESPECIALLY IF/AS COLD
   POOL DEVELOPMENT CONTINUES TO OCCUR UPSTREAM ACROSS CENTRAL
   MN...STORMS MAY RETAIN THEIR GENERAL INTENSITY INTO AT LEAST FAR
   WESTERN WI LATER THIS EVENING GIVEN VEERING WIND PROFILES AND STRONG
   INSTABILITY /2700 J PER KG MLCAPE/ AS NOTED PER THE 00Z MINNEAPOLIS
   OBSERVED SOUNDING.
   
   ..GUYER.. 07/31/2011
   
   
   ATTN...WFO...DLH...ARX...MPX...
   
   LAT...LON   45759254 46449173 46389087 44979080 44419149 44649260
               45759254