MESOSCALE DISCUSSION 1251
   NWS STORM PREDICTION CENTER NORMAN OK
   0107 AM CDT SAT JUN 20 2009
   
   AREAS AFFECTED...SOUTHERN IL/SOUTHERN INDIANA AND NORTHERN KY
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 200607Z - 200700Z
   
   POTENTIAL WILL EXIST FOR AT LEAST ISOLATED DAMAGING WINDS THROUGH
   THE OVERNIGHT ACROSS SOUTHERN IL/SOUTHERN INDIANA INTO NORTHERN KY.
   MONITORING FOR A POSSIBLE WATCH.
   
   MULTIPLE FAST MOVING LINEAR CLUSTERS WILL CONTINUE TO RACE EASTWARD
   AT AROUND 45 KT ACROSS PORTIONS OF SOUTHERN IL/SOUTHERN INDIANA AND
   ADJACENT NORTHERN KY OVERNIGHT. RELATIVELY STRONG/LARGELY
   UNIDIRECTIONAL WESTERLY FLOW IN THE LOW TO MID TROPOSPHERE...WITH 40
   KT BETWEEN 2-6 KM LAYER PER WSR-88D DERIVED WIND PROFILES FROM ST
   LOUIS/EVANSVILLE...ALONG WITH FURTHER STRENGTHENING EXPECTED OVER
   THE NEXT FEW HOURS WITHIN THE LOWEST FEW KM...WILL ALLOW FOR AT
   LEAST ISOLATED DAMAGING WIND GUSTS TO SEVERE LEVELS OVERNIGHT EVEN
   WITH MODEST NEAR SURFACE CINH. SHORT TERM TRENDS ARE BEING MONITORED
   FOR THE POSSIBILITY OF A WATCH.
   
   ..GUYER.. 06/20/2009
   
   
   ATTN...WFO...LMK...IND...PAH...ILX...LSX...
   
   LAT...LON   38508979 39068813 38818549 37568549 37298652 37478924
               37888985 38508979