MESOSCALE DISCUSSION 2007
   NWS STORM PREDICTION CENTER NORMAN OK
   1028 PM CDT THU SEP 10 2009
   
   AREAS AFFECTED...CNTRL ND
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 738...
   
   VALID 110328Z - 110500Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 738
   CONTINUES.
   
   THE THREAT FOR HAIL AND LOCALLY DAMAGING WIND GUSTS IS EXPECTED TO
   CONTINUE INTO CNTRL PARTS OF WW AREA.
   
   AS OF 03Z...MESOANALYSIS INDICATED A SURFACE LOW W OF BIS WITH
   ASSOCIATED COLD FRONT EXTENDING FROM E OF MOT THROUGH THE LOW CENTER
   SWWD INTO W-CNTRL SD S OF 2WX.  AS OF 0320Z...STRONG TO SEVERE TSTMS
   WERE OBSERVED ALONG FRONT FROM SHERIDAN...MCLEAN AND BURLEIGH
   COUNTIES ND TO CORSON COUNTY SD.  MODIFICATION OF 00Z BIS SOUNDING
   FOR CURRENT SURFACE CONDITIONS SUGGESTS THAT BOUNDARY LAYER IS
   GRADUALLY STABILIZING OWING TO THE ONSET OF NOCTURNAL COOLING. 
   HOWEVER...INCREASING DEEP ASCENT IN ADVANCE OF SHORT WAVE TROUGH AND
   FRONTAL CONVERGENCE SHOULD SERVE TO MAINTAIN ONGOING STORMS EWD
   ACROSS WW AREA WITH A CONTINUED THREAT FOR ISOLATED HAIL AND LOCALLY
   STRONG WIND GUSTS.
   
   ..MEAD.. 09/11/2009
   
   
   ATTN...WFO...FGF...BIS...
   
   LAT...LON   46260203 47690092 48550015 48959932 48869877 48119884
               46909915 46459978 45990071 46260203