MESOSCALE DISCUSSION 0641
   NWS STORM PREDICTION CENTER NORMAN OK
   0806 PM CDT MON MAY 10 2004
   
   AREAS AFFECTED...SE MT INTO NE CO
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 178...179...
   
   VALID 110106Z - 110300Z
   
   NEW WW WILL BE ISSUED BY CURRENT 02Z WW EXPIRATION TIME.
   
   WIDELY SCATTERED VIGOROUS THUNDERSTORMS ARE ONGOING...INCLUDING A
   COUPLE OF LONG LIVED SUPERCELLS...NEAR/JUST EAST OF THE COLORADO/
   WYOMING FRONT RANGE.  AS UPPER TROUGH CONTINUES TO LIFT INTO THE
   NORTHERN ROCKIES...SLOW VEERING OF MID/UPPER FLOW ALONG/EAST OF THE
   ROCKIES WILL SUPPORT A SLIGHT EASTWARD SHIFT OF STRONGER ACTIVITY
   INTO THE HIGH PLAINS THROUGH 06Z.  AS DEEP SURFACE LOW CONTINUES TO
   DEVELOP NORTHEASTWARD INTO THE SOUTHEAST MONTANA THIS EVENING...
   RAPID DESTABILIZATION WILL SUPPORT NORTHWARD DEVELOPMENT OF
   ADDITIONAL STRONG/SEVERE STORMS. 
   
   RISK OF ISOLATED TORNADOES IN SUPERCELL EAST OF DOUGLAS WY...AND
   SUPERCELL TO THE SOUTHEAST OF DENVER CO MAY DIMINISH NEXT COUPLE OF
   HOURS WITH LOSS OF DAYTIME HEATING.  HOWEVER...STRENGTHENING SHEAR
   PROFILES WEST OF INTENSIFYING LOW-LEVEL JET AXIS FROM THE NEBRASKA
   PANHANDLE INTO SOUTHEAST MONTANA WILL REMAIN SUPPORTIVE OF
   SUPERCELLS...ENHANCING RISK OF LARGE HAIL INTO THE OVERNIGHT HOURS.
   
   ..KERR.. 05/11/2004
   
   
   ATTN...WFO...LBF...UNR...GLD...PUB...BOU...CYS...BYZ...RIW...
   
   45760744 45790602 45300455 44240358 42760244 41900214
   40470193 38250299 38750403 40970479 42270533 43030560
   44120652 44930725 45370745