MESOSCALE DISCUSSION 1541
   NWS STORM PREDICTION CENTER NORMAN OK
   0238 PM CDT FRI JUL 08 2011
   
   AREAS AFFECTED...SWRN MT...EXTRM NERN ID...EXTRM NWRN WY
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 081938Z - 082115Z
   
   DEVELOPING THUNDERSTORMS ACROSS SWRN PTN OF THE AREA ARE EXPECTED TO
   INTENSIFY AS THEY MOVE NORTHEAST WITH LARGE HAIL AND DAMAGING WIND
   THE MAIN THREAT.
   
   MLCAPE OF 1000 TO 1500 J/KG IS IN PLACE ACROSS SOUTHWEST MONTANA AS
   BASE OF UPPER TROUGH AXIS SWINGS ACROSS THIS AREA DURING THE
   AFTERNOON.  DEEP LAYER SHEAR OF 35 TO 45 KTS SUPPORTS SEVERE STORM
   DEVELOPMENT.  SATELLITE AND LIGHTNING HAS CONTINUED TO SHOW ENHANCED
   AREA OF CLOUD/STORM DEVELOPMENT AND FURTHER HEATING DURING THE
   AFTERNOON SHOULD ADDITIONALLY DESTABILIZE THE AIR MASS AS STORMS
   INCREASE AND MOVE NORTHEAST ACROSS THE AREA.
   
   ..BOTHWELL.. 07/08/2011
   
   
   ATTN...WFO...BYZ...RIW...TFX...PIH...MSO...
   
   LAT...LON   44291050 44151118 44031197 43981332 44591322 45101274
               45451247 46011192 46411108 46671007 46670928 46390845
               45750781 45200768 44910802 44680841 44580883 44410932
               44330981 44291050