MESOSCALE DISCUSSION 1886
   NWS STORM PREDICTION CENTER NORMAN OK
   0610 PM CDT FRI AUG 14 2009
   
   AREAS AFFECTED...CNTRL/ERN MT
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 702...
   
   VALID 142310Z - 150015Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 702
   CONTINUES.
   
   AN ADDITIONAL WW IS BEING CONSIDERED THIS EVENING DOWNSTREAM OF WW
   702 IN ERN MT.
   
   RECENT RADAR/SATELLITE TRENDS HAVE DEPICTED RELATIVELY ANEMIC
   CONVECTION ACROSS CNTRL MT...LIKELY OWING TO A WEAKLY UNSTABLE AIR
   MASS GIVEN SURFACE TEMPERATURES GENERALLY IN THE 50S TO MIDDLE 60S.
   FARTHER EAST...DESTABILIZATION HAS BEEN MORE PRONOUNCED THIS
   AFTERNOON AS SURFACE TEMPERATURES HAVE REACHED INTO THE 70S TO LOWER
   80S. AS CURRENT ACTIVITY CONTINUES TO EVOLVE NEWD...AND AS
   LARGE-SCALE FORCED ASCENT STRENGTHENS AS NRN ID SHORT WAVE TROUGH
   PIVOTS EWD...CONVECTIVE COVERAGE SHOULD INCREASE INTO ERN MT THIS
   EVENING. ATTENDANT SEVERE HAIL/WIND THREATS WITH PERHAPS A BRIEF
   TORNADO SHOULD LIKEWISE INCREASE GIVEN STRONGLY VEERED LOW/MID-LEVEL
   FLOW /AS SAMPLED BY BILLINGS MT VAD PROFILER/ WITH EFFECTIVE SHEAR
   AROUND 50 KT.
   
   ..GRAMS.. 08/14/2009
   
   
   ATTN...WFO...BIS...UNR...BYZ...GGW...RIW...TFX...
   
   LAT...LON   44920844 45030985 45361048 46101069 47441040 48640928
               49010760 49020543 48560408 47560379 46410403 45370491
               44900586 44820707 44920844