MESOSCALE DISCUSSION 1764
   NWS STORM PREDICTION CENTER NORMAN OK
   0512 PM CDT SUN SEP 06 2015

   AREAS AFFECTED...PORTIONS OF EXTREME SERN MN...NERN IA...MUCH OF WI

   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 

   VALID 062212Z - 070015Z

   PROBABILITY OF WATCH ISSUANCE...40 PERCENT

   SUMMARY...THUNDERSTORMS MAY POSE A RISK FOR DAMAGING WINDS THROUGH
   THIS EVENING...AND TRENDS ARE BEING MONITORED FOR THE POSSIBILITY OF
   A SEVERE THUNDERSTORM WATCH.

   DISCUSSION...THUNDERSTORMS HAVE BEEN GRADUALLY INTENSIFYING ALONG A
   LINE FROM NORTH-CENTRAL INTO WEST-CENTRAL WISCONSIN LATE THIS
   AFTERNOON...WITH AN ISOLATED REPORT OF STRONG WINDS NOTED EARLIER
   ACROSS CLARK COUNTY. LATEST RADAR TRENDS SHOW THE LINE REMAINS
   LOOSELY ORGANIZED...WITH BRIEF INDICATIONS OF STRONGER OUTFLOW WINDS
   WITH THE MORE INTENSE CONVECTIVE ELEMENTS. THE DISCUSSION AREA IS
   LOCATED ALONG THE SOUTHERN PERIPHERY OF STRONGER MID-LEVEL
   FLOW...AND THE LATEST VWP FROM KARX SAMPLED 40-50 KT WINDS IN THE
   3-6 KM LAYER. DESPITE WARM MID-LEVEL TEMPERATURES...MODERATE-STRONG
   SURFACE-BASED INSTABILITY AND NEGLIGIBLE CONVECTIVE INHIBITION IS
   PRESENT IN THE DOWNSTREAM ENVIRONMENT. ISOLATED SEVERE WIND GUSTS
   WILL BE POSSIBLE WITH THE LINE OF STORMS INTO THE EARLY EVENING
   HOURS...AND ADDITIONAL DEVELOPMENT OF THE LINE FARTHER SOUTHWEST
   INTO FAR SOUTHEAST MINNESOTA/NORTHEAST IOWA IS ALSO POSSIBLE GIVEN A
   SIMILAR NEAR-STORM ENVIRONMENT.  

   CONVECTIVE TRENDS WILL BE MONITORED FOR SIGNS OF A MORE THAN
   ISOLATED SEVERE THREAT...AND A WATCH IS POSSIBLE PRIOR TO 00Z.

   ..BUNTING/CORFIDI.. 09/06/2015


   ATTN...WFO...GRB...MKX...ARX...MPX...

   LAT...LON   43029229 43389261 43619228 44429122 44979036 45528910
               45498833 45168805 44778794 43878827 43208928 42879109
               43029229