MESOSCALE DISCUSSION 0858
   NWS STORM PREDICTION CENTER NORMAN OK
   0259 PM CDT SUN MAY 22 2011
   
   AREAS AFFECTED...SERN MN...ERN IA...WRN WI...NWRN IL
   
   CONCERNING...TORNADO WATCH 322...323...327...
   
   VALID 221959Z - 222200Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH
   322...323...327...CONTINUES.
   
   THE TORNADO THREAT INCREASING ACROSS THE AREA.
   
   LATEST RADAR TRENDS SHOW STORMS BEGINNING TO SHOW MORE CLASSIC
   SUPERCELL STRUCTURE WITH INTENSIFYING MESOCYCLONES. NOW THAT STORMS
   HAVE BECOME ESTABLISHED...THEY WILL BE ABLE TO TAKE ADVANTAGE OF THE
   ENVIRONMENT WHICH IS QUITE UNSTABLE WITH AMPLE SHEAR FOR TORNADOES.
   AREA WIND PROFILERS AND VADS SHOW A FAVORABLE SHEAR ENVIRONMENT FOR
   STRONG TORNADOES...ESPECIALLY OVER NERN IA..SERN MN...WRN WI...AND
   EVENTUALLY FAR NWRN IL. THE ENVIRONMENT WILL CONTINUE TO BECOME MORE
   FAVORABLE FARTHER E INTO CNTRL WI AND NRN IL AS MID 60S BOUNDARY
   LAYER DEWPOINTS STREAM NWD.
   
   ..JEWELL.. 05/22/2011
   
   
   ATTN...WFO...GRB...MKX...DVN...DLH...ARX...MPX...DMX...
   
   LAT...LON   42428972 42119035 41559196 41599227 42639244 44179239
               44769257 45289303 45779292 46179197 46119090 45649037
               44948990 43348952 43148943 42428972