MESOSCALE DISCUSSION 1012
   NWS STORM PREDICTION CENTER NORMAN OK
   0915 PM CDT TUE JUN 09 2009
   
   AREAS AFFECTED...SERN KS...SRN MO...NERN OK...NRN AR
   
   CONCERNING...TORNADO WATCH 357...358...
   
   VALID 100215Z - 100315Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 357...358...CONTINUES.
   
   LLJ IS EXPECTED TO VEER AND STRENGTHEN ACROSS NRN AR INTO SRN MO
   OVER THE NEXT SEVERAL HOURS.  THIS INCREASE IN WARM ADVECTION SHOULD
   ENHANCE THE EWD PROPAGATION OF ONGOING MCS OVER THE KS/OK/MO TRI
   STATE BORDER REGION.  LATEST THINKING IS SEVERE THREAT WILL
   GRADUALLY INCREASE ALONG THE MO/AR BORDER AND WILL CONTINUE BEYOND
   THE 03Z EXPIRATION TIME OF ONGOING WATCHES.  NEW SEVERE THUNDERSTORM
   WATCH WILL LIKELY BE NEEDED TO ACCOUNT FOR PRIMARILY DAMAGING
   WINDS/LARGE HAIL.
   
   ..DARROW.. 06/10/2009
   
   
   ATTN...WFO...MEG...LZK...SGF...TSA...ICT...
   
   LAT...LON   37559561 37349296 36469129 35509186 36069539 37559561