MESOSCALE DISCUSSION 1019
   NWS STORM PREDICTION CENTER NORMAN OK
   0403 PM CDT MON JUN 10 2013

   AREAS AFFECTED...FAR EASTERN ID INTO SOUTHWEST/SOUTH-CENTRAL MT AND
   NORTHERN WY

   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 

   VALID 102103Z - 102230Z

   PROBABILITY OF WATCH ISSUANCE...40 PERCENT

   SUMMARY...TSTMS ARE EXPECTED TO CONTINUE TO DEVELOP THROUGH LATE
   AFTERNOON/EARLY EVENING ALONG THE ID/MT BORDER VICINITY EASTWARD
   INTO ADDITIONAL PARTS OF SOUTH-CENTRAL MT AND
   NORTHWEST/NORTH-CENTRAL WY. LOCALIZED WIND DAMAGE/PERHAPS SOME HAIL
   WILL BE POSSIBLE.

   DISCUSSION...AIDED BY THE ENTRANCE REGION OF AN UPPER JET...A
   DEEPENING CU FIELD WITH INCIPIENT TSTM DEVELOPMENT HAS BEGUN TO
   OCCUR OVER THE MOUNTAINS ALONG THE ID/MT BORDER...EASTWARD INTO
   NORTHWEST WY/ADJACENT MT. AS ADDITIONAL TSTM DEVELOPMENT OCCURS...A
   RELATIVELY STRONG DEEP LAYER WIND FIELD WILL SUPPORT SOME ORGANIZED
   STORM STRUCTURES INCLUDING A FEW HIGH-BASED SUPERCELLS. STRONG MEAN
   LAYER SOUTHWESTERLY WINDS AND THE WELL-MIXED NATURE OF THE BOUNDARY
   LAYER WILL SUPPORT STRONG DOWNDRAFT/POSSIBILITY OF LOCALIZED WIND
   DAMAGE IN ADDITION TO THE POSSIBILITY OF SOME HAIL. WHILE THE THREAT
   MAY REMAIN RELATIVELY MARGINAL/ISOLATED OVERALL...SOME CONSIDERATION
   MAY NEED TO BE GIVEN TO AN OUTLOOK UPGRADE/POSSIBLE WATCH ISSUANCE.

   ..GUYER/CORFIDI.. 06/10/2013


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

   LAT...LON   44591367 45761355 46030919 44610792 44031027 44631171
               44591367