[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 272002
SWOMCD
SPC MCD 272001 
COZ000-UTZ000-272200-

MESOSCALE DISCUSSION 1785
NWS STORM PREDICTION CENTER NORMAN OK
0301 PM CDT TUE JUL 27 2004

AREAS AFFECTED...SRN UT AND SWRN CO

CONCERNING...SEVERE THUNDERSTORM WATCH 669...

VALID 272001Z - 272200Z

THREATS FOR DAMAGING/SEVERE WIND GUSTS AND HAIL CONTINUE ACROSS SRN
UT AND SWRN CO.

VAPOR IMAGERY CONTINUES TO SHOW A STRONG UPPER LEVEL IMPULSE MOVING
ESEWD TOWARD WRN UT WITH DIFFLUENT UPPER FLOW REGIME ACROSS MUCH OF
THE GREAT BASIN.  THIS HAS PROVIDED A LARGE SCALE SUPPORT FOR TSTMS
TO DEVELOP THIS AFTERNOON.  STRONG/SEVERE TSTMS CLUSTER THAT MOVED
INTO THE LAKE POWELL AREA HAS GENERATED A COLD POOL THAT IS
ELONGATING DOWNSTREAM TOWARD NERN AZ.  OUTFLOW BOUNDARY THEN ARCS
NWWD THROUGH NRN KANE-CNTRL IRON-WRN BEAVER COUNTIES IN UT.  WSWLY
FLOW REGIME THROUGH THE TROPOSPHERE IS IMPINGING ON THIS BOUNDARY
AND NEW TSTMS ARE BACKBUILDING ALONG/NORTH OF IT.  GIVEN PARCELS
CHARACTERIZED BY MLCAPES OF 1000-1500 J/KG WITHIN A MODERATELY
SHEARED ENVIRONMENT...THESE TSTMS COULD ALSO BECOME SEVERE WITH HAIL
AND POSSIBLY HIGH WINDS.  IN ADDITION...TRAINING OF THE TSTMS MAY
POSE PROLONGED PERIOD OF VERY HEAVY RAINFALL ACROSS PORTIONS OF KANE
COUNTY.

FARTHER EAST...NUMEROUS TSTMS HAVE DEVELOPED OVER SWRN CO.  AS
OUTFLOW BOUNDARIES COLLIDE...BRIEF INTENSIFICATION OF UPDRAFTS ARE
POSSIBLE AND HAIL OR A MICROBURST OR TWO COULD OCCUR.

..RACY.. 07/27/2004

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

ATTN...WFO...GJT...SLC...

37241377 38781377 38610811 37090805 

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