[MCD] SWOMCD

[Mesoscale Convective Discussions]

ACUS11 KWNS 112239
SWOMCD
SPC MCD 112239 
SDZ000-COZ000-NEZ000-WYZ000-120045-

MESOSCALE DISCUSSION 1142
NWS STORM PREDICTION CENTER NORMAN OK
0539 PM CDT SUN JUN 11 2006

AREAS AFFECTED...ERN WY...NEB PANHANDLE...SWRN SD...AND NERN CO

CONCERNING...SEVERE THUNDERSTORM WATCH 464...

VALID 112239Z - 120045Z

CONTINUE ALL OF WW 464. CONVECTION WAS INTENSIFYING OVER THE ERN
WY/CO FRONT RANGE...AND IS EXPECTED TO BEGIN POSING A SEVERE THREAT
IN THE NEXT HR OR SO.

TSTMS WERE INTENSIFYING OVER THE DEN AREA NWD TO NEAR CYS...AND
ACTIVITY SHOULD BEGIN TO POSE A SVR THREAT IN THE NEXT HR OR SO AS
IT ENCOUNTERS AN INCREASINGLY MOIST/UNSTABLE ENVIRONMENT ASSOCIATED
WITH WWD MOVING OUTFLOW BOUNDARY CURRENTLY EXTENDING FROM 20 W
KIMBALL NEB TO 20 W OF AKRON COLO. PRIND ARE THAT SUFFICIENTLY HIGH
LCL HEIGHTS...DUE TO 30-35 DEG F T/TD SPREADS...WILL PRECLUDE MORE
THAN A VERY ISOLATED/BRIEF TORNADO THREAT. ANY BRIEF/ISOLATED
TORNADO IS MOST LIKELY TO OCCUR WITH CONVECTION THAT MOVES ALONG OR
CROSSES THE AFOREMENTIONED OUTFLOW BOUNDARY WHERE LOW LEVEL
SHEAR/VORTICITY WILL BE ENHANCED.

ISOLATED SVR STORMS ARE POSSIBLE A FEW COUNTIES NORTH OF WW 464 AS
LOW LEVEL SELY FLOW CONTINUES TO SUPPORT MOISTURE ADVECTION AND
DESTABILIZATION INTO ECENTRAL WY/SWRN SD...BUT OVERALL SVR THREAT
SHOULD REMAIN ISOLATED ENOUGH THAT ANOTHER WW IS NOT EXPECTED.

..CROSBIE.. 06/11/2006

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...LBF...UNR...GLD...BOU...CYS...

42990315 44210359 43810542 42840513 39090396 39100217
41830281 

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