MESOSCALE DISCUSSION 1487
   NWS STORM PREDICTION CENTER NORMAN OK
   0540 PM CDT SAT JUL 03 2004
   
   AREAS AFFECTED...NERN MT
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 032240Z - 032345Z
   
   ...ISOLATED THUNDERSTORMS MAY PRODUCE HAIL ACROSS PORTIONS OF NERN
   MT OVER THE NEXT FEW HOURS BUT WW IS NOT ANTICIPATED...
   
   ISOLATED SEVERE THUNDERSTORMS HAVE DEVELOPED ALONG WRN EDGE OF
   SWD-MOVING ANTICYCLONE WHERE STRONGEST SUNSHINE AND WEAK LOW LEVEL
   CONVERGENCE EXIST.  THIS ACTIVITY HAS STRUGGLED TO SPREAD EWD...BUT
   APPEARS MORE LIKELY TO CONTINUE PROPAGATING SHARPLY SSEWD ALONG
   NARROW ZONE OF INSTABILITY FROM SWRN SASKATCHEWAN INTO NERN MT WHERE
   BOUNDARY LAYER IS SOMEWHAT CONVERGENT. LARGE HAIL MAY ACCOMPANY THE
   STRONGEST UPDRAFTS FOR THE NEXT FEW HOURS BEFORE DIURNAL COOLING
   REDUCES ANY SIGNIFICANT SEVERE THREAT.
   
   ..DARROW.. 07/03/2004
   
   
   ATTN...WFO...GGW...TFX...
   
   48990685 48050607 47450648 47500784 48030859 48970898