MESOSCALE DISCUSSION 1442
   NWS STORM PREDICTION CENTER NORMAN OK
   0621 PM CDT TUE JUN 17 2008
   
   AREAS AFFECTED...PARTS OF CENTRAL MT
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 172321Z - 180015Z
   
   RECENT RADAR IMAGERY SUGGESTS STORMS ARE INTENSIFYING ACROSS PARTS
   OF CENTRAL MT.  A WW IS POSSIBLE WITHIN THE HR.
   
   REGIONAL RADAR MOSAIC SHOWS THAT HIGH-BASED STORMS HAVE DEVELOPED
   ACROSS MT THE PAST FEW HOURS.  23Z SURFACE ANALYSIS SHOWS A LOW
   PRESSURE TROUGH ACROSS CENTRAL AND SWRN MT WITH TEMPS IN THE
   80S/DEWPTS IN THE 40S.  STEEP LOW LEVEL LAPSE RATES DEVELOPED AS A
   RESULT OF STRONG DIABATIC HEATING...SUPPORTING MARGINAL TO MODERATE
   INSTABILITY /500-1500 J/KG MLCAPE/.  THE STRONGER STORMS WILL BE
   CAPABLE OF DAMAGING WINDS AND LARGE HAIL.  THE MAGNITUDE OF SHEAR
   AND FORCING ASSOCIATED WITH THE UPPER IMPULSE OVER THE NRN ROCKIES
   REGION SUGGESTS THE SEVERE THREAT SHOULD PERSIST THROUGH THE
   EVENING.
   
   ..SMITH.. 06/17/2008
   
   
   ATTN...WFO...BYZ...GGW...TFX...MSO...
   
   46431273 46891283 47451227 48431190 48761115 49020981
   48440812 47690809 47000856 46190926 45690987 45361088
   45281164 45421209 45831246 46091261