MESOSCALE DISCUSSION 1664
   NWS STORM PREDICTION CENTER NORMAN OK
   0528 PM CDT TUE JUL 19 2011
   
   AREAS AFFECTED...NRN/CNTRL WI
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 192228Z - 192330Z
   
   COMPLEX OF TSTMS HAS GRADUALLY INCREASED IN INTENSITY AS IT CROSSED
   FROM NERN MN INTO NWRN WI.  THIS ACTIVITY IS TRACKING SEWD AT
   ROUGHLY 35KT ALONG TIGHT INSTABILITY GRADIENT AND SHOULD PROPAGATE
   TOWARD GREEN BAY LATER THIS EVENING...BETWEEN 04-05Z.  IT APPEARS
   VERY LARGE HAIL MAY ACCOMPANY THE STRONGEST UPDRAFTS AND DAMAGING
   WINDS MAY ALSO DEVELOP IF N-S LINE SEGMENT BEGINS TO BOW AND SURGE
   SEWD.  GIVEN THE AIR MASS IN PLACE A WW WILL LIKELY BE WARRANTED
   DOWNSTREAM TO NEAR LAKE MI.
   
   ..DARROW.. 07/19/2011
   
   
   ATTN...WFO...GRB...MKX...DLH...ARX...MPX...
   
   LAT...LON   46629158 45318808 43738855 45249192 46629158