MESOSCALE DISCUSSION 1459
   NWS STORM PREDICTION CENTER NORMAN OK
   0502 PM CDT MON JUL 06 2009
   
   AREAS AFFECTED...ID...MT...WY
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 554...
   
   VALID 062202Z - 062300Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 554
   CONTINUES.
   
   SEVERE THUNDERSTORMS CONTINUE TO DEVELOP IN ADVANCE OF A POTENT
   NEGATIVELY TILTED SHORT WAVE TROUGH AND ASSOCIATED COLD FRONT THAT
   IS PROGRESSING ACROSS THE PACIFIC NORTHWEST TOWARDS THE ROCKIES.
   ALTHOUGH DISCRETE CELLS HAD DEVELOPED AHEAD OF THE FRONT...STRONG
   FORCING APPEARS TO BE RESPONSIBLE FOR INCREASINGLY LINEAR
   DEVELOPMENT. ALTHOUGH LARGE HAIL AND ISOLD TORNADOES REMAIN A
   POSSIBILITY...ESPECIALLY IN DISCRETE CELLS AHEAD OF THE
   LINE...WIDESPREAD WIND DAMAGE WILL BECOME MORE LIKELY AS THE LINE
   CONTINUES TO ORGANIZE AND SPREAD EWD.
   
   ..HURLBUT.. 07/06/2009
   
   
   ATTN...WFO...BYZ...GGW...RIW...TFX...PIH...MSO...
   
   LAT...LON   43610882 43961124 44761318 46091298 47781315 49011382
               48990875 45750796 43610882