MESOSCALE DISCUSSION 1779
   NWS STORM PREDICTION CENTER NORMAN OK
   0740 PM CDT TUE AUG 04 2009
   
   AREAS AFFECTED...ERN WY/WRN SD/NEB PANHANDLE
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 660...
   
   VALID 050040Z - 050145Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 660
   CONTINUES.
   
   THREAT FOR DMGG WINDS AND OCCASIONALLY LARGE HAIL PERSISTS IN WW660.
   
   
   COLD POOL HAS BECOME BETTER ORGANIZED WITH THE NERN WY
   COMPLEX...WITH A RECENT GUST OF 83 MPH BEING REPORTED AT ECHETA RAWS
   SITE. A SUBTLE SEWD TURN IN STORM MOTION IS BEGINNING...AS THE
   BOWING COMPLEX DEVIATES SLIGHTLY AWAY FROM THE MEAN FLOW IN FAVOR OF
   GREATER INSTABILITY. STRONG WINDS REACHING SURFACE SHOULD BE
   RELATIVELY UNIMPEDED...AS 00Z SOUNDINGS REFLECT ONLY A WEAK AMOUNT
   OF CINH. VERTICAL SHEAR PROFILES REMAIN FAVORABLE FOR ROTATING
   UPDRAFTS...WHICH GIVEN STEEP LOW/MID LAPSE RATES...LARGE HAIL WILL
   REMAIN POSSIBLE IN ADDITION TO THE PRIMARY THREAT OF DMGG WINDS.
   
   ..HURLBUT.. 08/05/2009
   
   
   ATTN...WFO...LBF...UNR...CYS...RIW...
   
   LAT...LON   41090193 41180474 42600617 43780584 44600500 44930345
               44490198 41090193