MESOSCALE DISCUSSION 1310
   NWS STORM PREDICTION CENTER NORMAN OK
   0927 PM CDT TUE JUN 10 2003
   
   AREAS AFFECTED...CENTRAL MT
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 110227Z - 110430Z
   
   SEVERE HAIL AND WIND WILL REMAIN A POSSIBILITY OVER CENTRAL MT
   THROUGH THE EARLY MORNING HOURS.
   
   STRONG UPPER SHORTWAVE TROUGH WAS CENTERED OVER EXTREME NWRN MT AT
   02Z.  SELY LLJ IS FORECAST TO INCREASE FROM 15 TO 30 KTS OVER
   EASTERN MT AND NERN WY.  THIS WILL MAINTAIN MARGINAL INSTABILITY AS
   MID LEVELS COOL WITH APPROACHING TROUGH.  STRONG CONVERGENCE WITHIN
   N-S ORIENTED SURFACE TROUGH WILL KEEP THUNDERSTORMS GOING THROUGH
   THE NIGHT.  HAIL WILL REMAIN A THREAT WITH THE STRONGEST
   STORMS...BUT STRONG WINDS ARE OF GREATER CONCERN.  IF ORGANIZED MCS
   CAN FORM...DAMAGING WINDS WOULD BE LIKELY.  MARGINAL LOW LEVEL FLOW
   AND INSTABILITY WILL LIKELY LIMIT OVERALL THREAT...BUT WILL CONTINUE
   TO MONITOR FOR SIGNS OF ORGANIZATION.
   
   ..JEWELL.. 06/11/2003
   
   
   ATTN...WFO...GGW...BYZ...TFX...
   
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