MESOSCALE DISCUSSION 1603
   NWS STORM PREDICTION CENTER NORMAN OK
   0136 PM CDT WED JUL 13 2011
   
   AREAS AFFECTED...N-CNTRL ID...WRN MT
   
   CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE 
   
   VALID 131836Z - 132030Z
   
   STORMS ARE CURRENTLY DEVELOPING OVER N-CNTRL ID AND SWRN MT OVER THE
   HIGH TERRAIN AND ARE EXPECTED TO INCREASE IN COVERAGE AND INTENSITY
   THROUGH THE AFTERNOON AS THE ATMOSPHERE CONTINUES TO DESTABILIZE. 
   CONVECTIVE TRENDS WILL CONTINUE TO BE MONITORED FOR A POSSIBLE WW.
   
   SURFACE HEATING HAS LED TO THE DEVELOPMENT OF MODERATE
   INSTABILITY...MLCAPE VALUES OF 1000 J/KG...AND ERODING CINH OVER WRN
   MT.  WITH AN UPPER-LEVEL TROUGH CURRENTLY ALONG THE PACIFIC COAST
   /PER WATER VAPOR IMAGERY/...DEEP-LAYER SSWLY SHEAR IS ON THE ORDER
   OF 40-45 KTS AS INDICATED BY CURRENT MESOANALYSIS DATA. THIS
   COMBINATION OF INSTABILITY AND SHEAR SHOULD BE SUFFICIENT FOR
   ORGANIZED STORMS INCLUDING THE POSSIBILITY OF SUPERCELL STRUCTURES
   WITH A PRIMARY THREAT OF LARGE HAIL AND DAMAGING WINDS.
   
   ..JIRAK.. 07/13/2011
   
   
   ATTN...WFO...BYZ...TFX...PIH...MSO...BOI...OTX...
   
   LAT...LON   44101454 44561478 44971484 45551493 46081504 46551511
               46941504 47501475 47891462 48351433 48621393 48771336
               48921269 48911148 48851048 48841015 48730983 48530964
               48280944 48010946 47760954 47330971 46920994 46211028
               45881045 45321085 44781181 44461244 44271281 44141316
               44121373 44101454