MESOSCALE DISCUSSION 1808
   NWS STORM PREDICTION CENTER NORMAN OK
   1055 PM CDT THU AUG 06 2009
   
   AREAS AFFECTED...NERN MT
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 670...
   
   VALID 070355Z - 070500Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 670
   CONTINUES.
   
   WHILE ISOLATED STRONG STORMS REMAIN POSSIBLE...THE POTENTIAL FOR
   MORE ORGANIZED SEVERE WEATHER APPEARS TO BE DIMINISHING.
   
   TRENDS IN REGIONAL RADAR IMAGERY INDICATE THAT TSTMS HAVE GRADUALLY
   WEAKENED OVER THE PAST HOUR...BUT EVOLUTION OF MCV /OBSERVED OVER
   SRN PHILLIPS COUNTY AS OF 350Z/ SHOULD SUSTAIN ACTIVITY EWD THROUGH
   REMAINDER OF WW AREA.  MODIFICATION OF 00Z GGW SOUNDING FOR CURRENT
   SURFACE CONDITIONS SUGGESTS THAT AMBIENT AIR MASS IS NOW ONLY WEAKLY
   UNSTABLE WITH AN INCREASING AMOUNT OF CONVECTIVE INHIBITION.  WHILE
   AN ISOLATED STRONG TO SEVERE STORM REMAINS POSSIBLE...THE WEAKENING
   INSTABILITY AND STRENGTHENING CAP SHOULD LIMIT THE POTENTIAL FOR
   MORE WIDESPREAD DAMAGING WINDS OR HAIL.
   
   ..MEAD.. 08/07/2009
   
   
   ATTN...WFO...GGW...
   
   LAT...LON   47150826 48260812 48870748 48690664 48080599 47410596
               46940653 46900744 47150826