MESOSCALE DISCUSSION 1684
   NWS STORM PREDICTION CENTER NORMAN OK
   0645 PM CDT FRI JUL 04 2008
   
   AREAS AFFECTED...MUCH OF W-CENTRAL MT / NERN ID
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 656...657...
   
   VALID 042345Z - 050045Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH
   656...657...CONTINUES.
   
   ONGOING STRONG TO SEVERE TSTMS WILL LIKELY CONTINUE TO PERSIST
   THROUGH THE EARLY EVENING HOURS.  
   
   RECENT RADAR IMAGERY SHOWS STRONG TO SEVERE MULTICELLS /OCCASIONALLY
   EXHIBITING SUPERCELL STRUCTURE/ MAINLY IMPACTING PARTS OF W-CENTRAL
   MT.  SURFACE ANALYSIS THIS AFTERNOON CONTINUES TO INDICATE THE
   STRONGEST PRESSURE FALL/RISE COUPLET ACROSS WRN MT/SRN ALBERTA WHERE
   RELATIVELY HIGHER QUALITY MOISTURE RESIDES PER SURFACE OBS.  23Z
   OBJECTIVE ANALYSIS/REGIONAL VWP DATA STILL SUGGEST THE STRONGER DEEP
   LAYER FLOW /AOA 35 KTS/ IS CONFINED TO EXTREME WRN AND NWRN MT FOR
   THE TIME BEING.  THIS WILL ACT TO SUPPORT A MORE ROBUST SEVERE
   POTENTIAL ACROSS THIS PORTION OF WW 656/657 WHERE GREATEST
   COMBINATION OF INSTABILITY/SHEAR EXIST.  ELSEWHERE...THE PRIMARY
   INFLUENCING FACTOR FOR STORM ORGANIZATION WILL LIKELY BE MODERATE
   INSTABILITY /1000-2000 J/KG MLCAPE/ THAT HAS DEVELOPED.  PRIMARY
   THREATS ASSOCIATED WITH STORMS IN BOTH AREAS WILL LIKELY CONTINUE TO
   BE LARGE HAIL AND DAMAGING WINDS.
   
   ..SMITH.. 07/04/2008
   
   
   ATTN...WFO...BYZ...GGW...RIW...TFX...PIH...MSO...BOI...
   
   48971465 49000715 47600742 47410797 46410775 46120886
   45610888 45020985 44981103 44471105 44541220 44221327
   44821423 44561448 44721479 46651433 46631462 47271476
   47111420 47881465 47851496 48211497