MESOSCALE DISCUSSION 1005
   NWS STORM PREDICTION CENTER NORMAN OK
   0111 PM CDT SAT MAY 28 2011
   
   AREAS AFFECTED...CNTRL AND NRN MN...NW WI
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 281811Z - 281945Z
   
   CONVECTION IS EXPECTED TO INCREASE IN COVERAGE AND INTENSITY THIS
   AFTERNOON. THE MAIN THREATS WILL BE SEVERE WIND AND HAIL...WITH WW
   ISSUANCE POSSIBLE EARLY THIS AFTERNOON. 
   
   LATEST WV IMAGERY INDICATES A COMPACT UPPER LOW ACROSS NRN ND..WITH
   A STRONG WSWLY JET EMERGING FROM THE ROCKIES INTO SRN MN AHEAD OF
   THIS FEATURE. LOW-LEVEL MOISTURE IS QUITE MARGINAL ACROSS MN
   /DEWPOINTS RANGING FROM 45-55/ BUT STEEP LAPSE RATES AND AFTERNOON
   HEATING WILL ALLOW FOR SOME DESTABILIZATION THIS AFTERNOON...WITH ML
   CAPES OF 500-1000 J/KG DEVELOPING. STRONG FLOW ALOFT WILL RESULT IN
   SUFFICIENT SHEAR FOR STORM ORGANIZATION ACROSS MAINLY THE SRN HALF
   OF MN NE INTO THE ARROWHEAD REGION...WITH LOW-TOPPED SUPERCELLS OR
   SHORT LINE SEGMENTS EXPECTED TO BE THE PRIMARY CONVECTIVE MODE
   RESULTING A THREAT OF SEVERE HAIL AND WIND. 
   
   ACROSS NWRN MN...SHEAR WILL BE WEAKER...BUT PROXIMITY TO COLD UPPER
   LOW WILL RESULT IN A THREAT OF ISOLATED SEVERE HAIL WITH STRONGER
   CONVECTIVE CELLS.
   
   ..DEAN.. 05/28/2011
   
   
   ATTN...WFO...DLH...MPX...FGF...ABR...
   
   LAT...LON   46059642 46739651 47619658 48269676 48769683 48599479
               48509301 47809088 47179112 46569139 46109185 45669233
               45239279 44909336 44769407 44749489 44919558 45089606
               45479634 46059642