MESOSCALE DISCUSSION 1358
   NWS STORM PREDICTION CENTER NORMAN OK
   0755 PM CDT MON JUL 02 2007
   
   AREAS AFFECTED...MT...WY
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 472...
   
   VALID 030055Z - 030230Z
   
   CORRECTED FOR WATCH NUMBER IN MCD
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 472
   CONTINUES.
   
   NUMEROUS INTENSE TSTMS ARE EXPECTED TO CONTINUE SPREADING GENERALLY
   EWD FROM NCNTRL INTO NEWD MT THIS EVENING. SOME OF THESE CELLS COULD
   BE ACCOMPANIED BY LARGE HAIL AND DAMAGING OUTFLOW WINDS. ADDITIONAL
   STORMS SHOULD INCREASE ACROSS PARTS OF SCNTRL/SERN MT AND NERN WY
   LATER TONIGHT.
   
   STRONGEST STORMS APPEAR TO BE OCCURRING IN ADVANCE OF A FAST-MOVING
   SHORT WAVE TROUGH AND ASSOCIATED FRONTAL ZONE/LOW CURRENTLY LOCATED
   ACROSS THE NWRN PORTIONS OF WW 472. WEAK SURFACE LOW AND UNSTABLE
   WARM SECTOR...FROM LWT TO GGW AND POINTS SOUTH...SHOULD CONTINUE TO
   FAVOR ROBUST STORMS AND POSSIBLY SUPERCELLS. PRESENT INDICATIONS ARE
   THAT MOST INTENSE ACTIVITY WILL MOVE INTO TORNADO WATCH 473 SHORTLY.
   ADDITIONAL CONVECTION APPEARS TO BE INCREASING ACROSS THE
   ABSAROKA...BEARTOOTH...AND BIG HORN MOUNTAINS ATTM AND THIS ACTIVITY
   MAY BE SUSTAINED AS LARGE SCALE FORCING WITH THE SHORT WAVE TROUGH
   MOVES EAST THIS EVENING. HOT AIR MASS ACROSS THE LOWER ELEVATIONS
   WILL SUPPORT DAMAGING DOWNBURST WINDS. LARGE HAIL WILL ALSO BE
   POSSIBLE GIVEN DEGREE OF INSTABILITY AND SHEAR OVER THE REGION.
   
   ..CARBIN.. 07/03/2007
   
   
   ATTN...WFO...UNR...CYS...BYZ...GGW...RIW...TFX...
   
   49001217 49000865 47760893 47570841 46780870 46760782
   46850616 46610413 45390411 43970410 43460417 43480709
   44440726 45040796 44970983 46200961 46231035 46741051
   47541086 47681141 48201151 48331231