MESOSCALE DISCUSSION 0767
   NWS STORM PREDICTION CENTER NORMAN OK
   0547 PM CDT FRI MAY 08 2009
   
   AREAS AFFECTED...ERN IS..SW WI...NW IL
   
   CONCERNING...SEVERE POTENTIAL...WATCH LIKELY 
   
   VALID 082247Z - 082345Z
   
   A SMALL WW MAY BE REQUIRED E OF WW 270 FOR MAINLY A DAMAGING WIND
   THREAT.
   
   A CLUSTER OF STORMS CONTINUES TO MOVE EWD ACROSS E CNTRL IA...NEAR A
   SMALL SURFACE LOW AND ALONG A COLD FRONT. SURFACE ANALYSIS SHOWS
   PRESSURE FALLS AHEAD OF THIS LOW...WITH PROFILERS AND MODEL FORECAST
   SOUNDINGS INDICATING STRENGTHENING WIND FIELDS AHEAD OF THIS FEATURE
   FAVORING LONG LIVED SEVERE CONVECTION.
   
   INSTABILITY IS WEAK BUT SUFFICIENT GIVEN THE STRONG FORCING.
   FURTHER...MID TO UPPER 50S DEWPOINTS WILL CONTINUE TO STREAM NWD
   AHEAD OF THE COLD FRONT. AN E-W ZONE ROUGHLY ALONG THE I-80 CORRIDOR
   MAY SEE A LOCALIZED SEVERE WIND THREAT...SHIFTING EWD INTO IL AND
   PERHAPS SRN WI LATER THIS EVENING. THE LOCALIZED STRENGTHENING AND
   BACKING OF THE LOW LEVEL WINDS NEAR THE LOW AND ALONG THE DEVELOPING
   WARM FRONT MAY ALSO RESULT IN AN ISOLATED TORNADO THREAT.
   
   ..JEWELL.. 05/08/2009
   
   
   ATTN...WFO...LOT...ILX...MKX...DVN...ARX...DMX...
   
   LAT...LON   42599291 42829193 42929132 43039060 43089006 43078952
               42898888 42318855 41568899 41088975 40749099 40689287
               40739354 41519327 42169299 42599291