MESOSCALE DISCUSSION 1705
   NWS STORM PREDICTION CENTER NORMAN OK
   0937 AM CDT SAT JUL 23 2011
   
   AREAS AFFECTED...SERN MN AND WI
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 231437Z - 231530Z
   
   ISOLATED SEVERE STORM WAS MOVING EWD AT 35 KT THROUGH SERN MN AND
   PORTIONS OF WI WILL BE MONITORED FOR A POSSIBLE WATCH ISSUANCE LATE
   THIS MORNING OR AFTERNOON.
   
   OVERNIGHT LINEAR MCS...WHICH STRETCHED FROM NWRN WI SEWD INTO SERN
   MN...HAS GENERALLY WEAKENED DURING THE PAST COUPLE OF HOURS.
   HOWEVER...AN INTENSE STORM WAS LOCATED JUST BEHIND THE BOUNDARY...
   ABOUT 20 MILES SOUTH OF MSP. ALTHOUGH THIS STORM IS ELEVATED AND THE
   AIS MASS AHEAD OF IT IS CURRENTLY WEAKLY UNSTABLE...THE STORM WAS
   BEING SUSTAINED BY A WARM AND UNSTABLE AIR MASS BEING SPREAD NEWD BY
   SWLY WINDS BETWEEN 700 AND 850 MB. GIVEN THE CURRENT THERMODYNAMIC
   ENVIRONMENT...MARGINALLY SEVERE HAIL APPEARS TO BE THE MAIN
   THREAT...ALONG WITH 35 TO 50 MPH WINDS. HOWEVER...WITH
   HEATING/DESTABILIZATION OF THE AIR MASS...IF THE STORM CAN BE
   MAINTAINED THROUGH THE MORNING AND BECOME SURFACE BASED...THE
   POTENTIAL FOR LARGER HAIL AND WIND DAMAGE WOULD INCREASE...AND A
   WATCH WOULD THEN BECOME MORE LIKELY.
   
   ..IMY.. 07/23/2011
   
   
   ATTN...WFO...GRB...MKX...DLH...ARX...MPX...
   
   LAT...LON   43409117 43759243 44089265 44719244 45259171 45439088
               45388987 44628780 43758804 43438869 43338980 43409117