[MCD] SWOMCD

Sat Aug 12 22:06:29 UTC 2006

ACUS11 KWNS 122208
SWOMCD
SPC MCD 122208 
COZ000-WYZ000-UTZ000-122345-

MESOSCALE DISCUSSION 1808
NWS STORM PREDICTION CENTER NORMAN OK
0508 PM CDT SAT AUG 12 2006

AREAS AFFECTED...NE UT...SW WY AND NW CO

CONCERNING...SEVERE THUNDERSTORM POTENTIAL 

VALID 122208Z - 122345Z

AN ISOLATED SEVERE THREAT WILL LIKELY CONTINUE ACROSS NE UT...SW WY
AND NW CO LATE THIS AFTERNOON. HAIL AND ISOLATED DAMAGING WINDS CAN
BE EXPECTED WITH THE STRONGER THUNDERSTORMS OVER THE NEXT 
FEW HOURS.

LATEST SFC ANALYSIS SHOWS A SFC LOW OVER CNTRL WY WITH A FRONTAL
BOUNDARY EXTENDING SEWD FROM THE LOW ACROSS SERN WY. SOUTH OF THE
BOUNDARY...DEWPOINTS ARE GENERALLY IN THE 40S F WITH A POCKET OF 50
TO 55 F DEWPOINTS LOCATED FROM GRAND JUNCTION CO NWD TO THE WYOMING
STATE-LINE. ACCORDING TO RUC ANALYSIS...A SMALL AREA OF MODERATE
INSTABILITY IS PRESENT IN NRN UT WHERE SEVERAL SUPERCELLS ARE
ONGOING ATTM. WATER VAPOR IMAGERY SHOWS THE CONVECTION IS FORMING IN
AN AREA OF STRONG LARGE-SCALE ASCENT JUST AHEAD OF A DRY SLOT
APPROACHING FROM THE SOUTHWEST. THIS SHOULD SUPPORT CONTINUED
THUNDERSTORM DEVELOPMENT THROUGH THE EARLY EVENING. MODERATE
VERTICAL SHEAR AND VERY STEEP LAPSE RATES ALONG WITH TEMP-DEWPOINT
SPREADS EXCEEDING 20 TO 25 F SHOULD BE FAVORABLE FOR ISOLATED
DAMAGING WINDS AND HAIL.

..BROYLES.. 08/12/2006

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

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

39490825 39901067 40611258 41671186 41330929 40500773 

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