MESOSCALE DISCUSSION 1410
   NWS STORM PREDICTION CENTER NORMAN OK
   0759 PM CDT THU JUL 02 2009
   
   AREAS AFFECTED...SOUTH CENTRAL MT
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 539...
   
   VALID 030059Z - 030200Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 539
   CONTINUES.
   
   EFFECTIVE BULK SHEAR /35-40 KT/ WILL REMAIN SUFFICIENT FOR ORGANIZED
   STORMS ACROSS SOUTH CENTRAL MT...GIVEN ESELY LOW LEVEL WINDS 20-30
   KT PER WSR-88D VAD DATA/23Z RUC FORECAST SOUNDINGS FOR THIS REGION
   BENEATH STRONGER WLY UPPER LEVEL WINDS.  DESPITE THIS FAVORABLE
   FACTOR...OBJECTIVE ANALYSES INDICATED INSTABILITY DIMINISHING ACROSS
   SRN MT WITH A FURTHER DECREASE IN INSTABILITY EXPECTED WITH THE LOSS
   OF DAYTIME HEATING.  THEREFORE...OVERALL SEVERE WEATHER THREAT
   SHOULD ALSO CONTINUE TO DIMINISH THIS EVENING.
   
   ..PETERS.. 07/03/2009
   
   
   ATTN...WFO...BYZ...RIW...TFX...
   
   LAT...LON   45021091 45521064 46050990 46720950 46740794 46330699
               45390677 45180651 45170631 45030622 44970810 45021091