MESOSCALE DISCUSSION 0303
   NWS STORM PREDICTION CENTER NORMAN OK
   1258 PM CDT WED MAR 21 2007
   
   AREAS AFFECTED...N-CNTRL AND NERN MO
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 63...
   
   VALID 211758Z - 211900Z
   
   THE SEVERE WEATHER THREAT OVER N-CNTRL AND NERN MO APPEARS TO BE
   DIMINISHING AND THAT PORTION OF WW WILL LIKELY BE ABLE TO BE
   CANCELLED.
   
   A CLUSTER OF STRONG TO POTENTIAL SEVERE TSTMS CONTINUES EARLY THIS
   AFTERNOON OVER ERN IA...GENERALLY N OF A OTM TO BRL LINE.  TO THE
   S...EARLIER STORMS HAVE SINCE DIMINISHED DESPITE CONTINUED AIR MASS
   DESTABILIZATION.  CURRENT WATER VAPOR IMAGERY AND RADAR TRENDS
   SUGGEST THAT THE BEST CO-LOCATION OF AIR MASS DESTABILIZATION AND
   FORCING FOR ASCENT ATTENDANT TO MIGRATORY SHORT WAVE TROUGH WILL
   EXIST ACROSS ERN IA INTO NWRN IL AND PERHAPS SWRN WI THIS AFTERNOON.
   AS SUCH...THE PROSPECTS FOR ADDITIONAL STORM DEVELOPMENT INTO
   N-CNTRL AND NERN MO APPEAR TO BE DIMINISHING AND THAT PORTION OF WW
   CAN LIKELY BE CANCELLED.
   
   ..MEAD.. 03/21/2007
   
   
   ATTN...WFO...LSX...DVN...DMX...EAX...
   
   40179387 40529369 40849302 40859220 40709133 40259144
   39649122 39259194 39199266 39389367