SWOMCD
SPC MCD 042345
MTZ000-WYZ000-IDZ000-050045-
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
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
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
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