SWOMCD
SPC MCD 072030
KSZ000-NEZ000-COZ000-072130-
MESOSCALE DISCUSSION 0975
NWS STORM PREDICTION CENTER NORMAN OK
0330 PM CDT SUN JUN 07 2009
AREAS AFFECTED...NERN/E-CNTRL CO...NWRN KS...SWRN NEB
CONCERNING...SEVERE THUNDERSTORM WATCH 341...
VALID 072030Z - 072130Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 341
CONTINUES.
SEVERE THREAT IS EXPECTED TO PROGRESS EWD IN CONCERT WITH SUPERCELLS
AND ORGANIZED MULTICELLS EVOLVING ACROSS NERN CO AND LIKELY
EVENTUALLY INTO NWRN KS/SWRN NEB. AN ADDITIONAL WW MAY BE NEEDED
LATER THIS AFTERNOON DOWNSTREAM OF WW 341.
20Z SUBJECTIVE SURFACE ANALYSIS PLACED A QUASI-STATIONARY FRONT
AROUND 20 SE DEN E/SEWD TO 30 S ITR TO DDC. A FEW CONVECTIVE
CLUSTERS WITH EMBEDDED SUPERCELLS HAVE EVOLVED JUST EAST OF THE I-25
CORRIDOR FROM WELD COUNTY TO THE ERN DEN METRO AREA. MODIFIED 18Z
DNR RAOB SAMPLED A FAVORABLE KINEMATIC/THERMODYNAMIC ENVIRONMENT FOR
SUPERCELL STRUCTURES MAINLY PRODUCING LARGE HAIL. ALTHOUGH LOW-LEVEL
UPSLOPE FLOW SHOULD REMAIN RELATIVELY MODEST...THREAT FOR BRIEF/WEAK
TORNADOES WILL CONTINUE. STRONG HEATING DOWNSTREAM OF TSTM ACTIVITY
TO THE EDGE OF SLOWLY ERODING STRATUS DECK OVER FAR NERN CO/NWRN KS
SHOULD PROMOTE A MAINTENANCE OF ORGANIZED SEVERE POTENTIAL INTO
E-CNTRL CO/NWRN KS THROUGH 00Z AS ATTENDANT SHORT WAVE TROUGH EJECTS
E/NEWD.
..GRAMS.. 06/07/2009
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...LBF...GLD...BOU...
LAT...LON 39410535 40590485 40900323 40860186 40660148 40340131
39130102 38570139 38550187 38940249 39350319 39300408
39150481 39410535
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