MESOSCALE DISCUSSION 1386
   NWS STORM PREDICTION CENTER NORMAN OK
   0916 PM CDT MON JUL 14 2014

   AREAS AFFECTED...ERN ID...SWRN MT

   CONCERNING...SEVERE THUNDERSTORM WATCH 421...

   VALID 150216Z - 150315Z

   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 421
   CONTINUES.

   SUMMARY...ISOLATED STRONG TO SEVERE STORMS MAY OCCUR THROUGHOUT THE
   EVENING AND AN EXTENSION PAST THE SCHEDULED 03Z EXPIRATION TIME MAY
   BE NEEDED FOR THE MT PORTIONS OF WW 421.

   DISCUSSION...REGIONAL RADAR IMAGERY SHOWS SEVERAL STRONG
   STORMS...THE STRONGEST OF WHICH IS LOCATED IN BONNEVILLE COUNTY IN
   FAR ERN ID. A RECENT INCREASE IN CLOUDINESS ACROSS SW ID IS LIKELY
   TIED TO INCREASED ASCENT APPROACHING THE REGION. VISIBLE IMAGERY
   ACROSS SWRN MT ALSO SUGGESTS CONTINUED ASCENT. 

   OVERALL STORM COVERAGE WILL LIKELY DECREASE AS DAYTIME HEATING WANES
   OVER THE NEXT FEW HOURS BUT A FEW STRONG TO SEVERE STORMS ARE
   POSSIBLE ACROSS SWRN MT THROUGHOUT THE EVENING AS THE ENVIRONMENT
   REMAINS UNSTABLE AND FORCING FOR ASCENT REMAINS OVER THE AREA. AN
   EXTENSION PAST THE CURRENT EXPIRATION TIME OF 03Z MAY BE NEEDED IF
   TRENDS IN STORM COVERAGE AND INTENSITY REMAIN SIMILAR TO WHAT IS
   CURRENTLY OBSERVED.

   ..MOSIER.. 07/15/2014


   ATTN...WFO...BYZ...RIW...TFX...PIH...MSO...BOI...OTX...

   LAT...LON   47411547 47771500 45801039 42781067 44101466 45951476
               46791509 47411547