SWOMCD
SPC MCD 082134
NEZ000-KSZ000-COZ000-WYZ000-082300-
MESOSCALE DISCUSSION 1828
NWS STORM PREDICTION CENTER NORMAN OK
0434 PM CDT SAT AUG 08 2009
AREAS AFFECTED...SERN WY / NEB PNHDL / NERN CO
CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE
VALID 082134Z - 082300Z
THE THREAT FOR SEVERE STORMS INCLUDING SUPERCELLS IS EXPECTED TO
INCREASE THROUGH THIS EVENING. LARGE HAIL AND DAMAGING WINDS WILL
BE THE PRIMARY SEVERE THREATS.
TSTMS ARE ATTEMPTING TO BECOME SUSTAINED THIS AFTERNOON FROM DGW TO
CYS WITH ADDITIONAL DEVELOPMENT LIKELY BEFORE 00Z ALONG THE FRONT
RANGE /W AND NW OF DEN/...AS WELL AS PERHAPS OVER THE HIGH PLAINS OF
NERN CO NEAR OR N OF LIC. REGION RESIDES WITHIN POST-FRONTAL
UPSLOPE REGIME WHERE DEWPOINTS OF 45-55 F AND STEEP LAPSE RATES ARE
CONTRIBUTING TO MLCAPE APPROACHING 1000-1500 J/KG.
STORMS MAY CONTINUE TO STRUGGLE FOR THE NEXT HOUR OR SO...BUT
INCREASING INFLUENCE OF WELL-DEFINED VORTICITY MAXIMUM LIFTING NEWD
THROUGH WRN CO SHOULD EVENTUALLY PROMOTE SCATTERED TSTM DEVELOPMENT.
CURRENT PLATTEVILLE CO PROFILER SHOWS RELATIVELY WEAK WINDS IN THE
LOWEST 3 KM...THOUGH A SUBSTANTIAL INCREASE IN SWLY FLOW IS NOTED
ABOVE THAT LAYER. THIS KINEMATIC STRUCTURE IS RESULTING IN
LONG...STRAIGHT HODOGRAPHS...FAVORABLE FOR SPLITTING SUPERCELLS
CAPABLE OF LARGE HAIL AND DAMAGING WINDS.
..MEAD.. 08/08/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LBF...GLD...BOU...CYS...
LAT...LON 39370420 40250517 41380561 42100537 42690497 42920435
42920365 42450271 41630202 40590179 39790188 39250231
39050292 39370420
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