MESOSCALE DISCUSSION 1244
   NWS STORM PREDICTION CENTER NORMAN OK
   0728 PM CDT FRI JUN 19 2009
   
   AREAS AFFECTED...PARTS OF SRN LOWER MI
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 200028Z - 200200Z
   
   STORMS SPREADING EWD ACROSS SRN LK MI FROM THE W WILL AFFECT SRN
   LOWER MI...BUT WITH INSTABILITY LIMITED OVER MOST OF THE AREA...WW
   MAY NOT BE REQUIRED.
   
   MODEST DESTABILIZATION HAS OCCURRED ACROSS THE SW CORNER OF LOWER
   MI...WITH STORMS NOW SPREADING ACROSS THE LAKE TOWARD THIS REGION. 
   OTHER SHOWERS AND THUNDERSTORMS -- WHICH HAVE DEVELOPED WITHIN LESS
   UNSTABLE AIRMASS OVER THE REMAINDER OF LOWER MI -- HAVE REMAINED
   WEAK/SUB-SEVERE.  
   
   A LIMITED SEVERE THREAT SHOULD CONTINUE TO EVOLVE ACROSS A SMALL
   PORTION OF SWRN LOWER MI TO THE N OF TORNADO WATCH 483 -- WHICH
   EXTENDS NWD INTO THE SRN TIER OF COUNTIES IN LOWER MI.  THIS REGION
   OF INCREASING THREAT -- MAINLY IN THE FORM OF LOCALLY-DAMAGING WINDS
   -- WOULD INCLUDE ALLEGAN...VAN BUREN AND KALAMAZOO COUNTIES. 
   HOWEVER...THE AREAL EXTENT OF THE THREAT N OF THE EXISTING WATCH
   APPEARS SMALL,..AND THEREFORE ATTM IT APPEARS THAT A NEW WW MAY NOT
   BE REQUIRED.
   
   ..GOSS.. 06/20/2009
   
   
   ATTN...WFO...IWX...GRR...
   
   LAT...LON   42118644 42918619 42978576 42148414 42118644