[MCD] SWOMCD

[MCD at goshenarc.org]

ACUS11 KWNS 011834
SWOMCD
SPC MCD 011834 
WYZ000-UTZ000-IDZ000-NVZ000-012130-

MESOSCALE DISCUSSION 1816
NWS STORM PREDICTION CENTER NORMAN OK
0134 PM CDT SUN AUG 01 2004

AREAS AFFECTED...NW UT/SE ID/EXTREME WRN WY

CONCERNING...SVR TSTM POTENTIAL/DRY LIGHTNING 

VALID 011834Z - 012130Z

...POTENTIAL FOR STRONG/DAMAGING WIND GUSTS NEXT SEVERAL HOURS...

MID LEVEL MOISTURE AND DIFFERENTIAL HEATING ACROSS THE INTERMOUNTAIN
WEST HAVE SUPPORTED THE DEVELOPMENT OF HIGH BASED STRONG TSTMS THIS
AFTN. WATER VAPOR IMAGERY SHOWS A DISTURBANCE SE OF BYI...ROTATING
AROUND THE RIDGE AND OTHER SUBTLE WAVES MAY BE PRESENT WITHIN THIS
STRONG / 35-40 KT / MONSOONAL FLOW REGIME. GIVEN THE FAST FLOW
ALOFT...INDIVIDUAL TSTM UPDRAFTS WILL TEND TO BE SHORT LIVED AND
WILL LIKELY FORWARD PROPAGATE INTO THE AREA OF DIFFERENTIAL HEATING
ACROSS NW UT/SE ID. 

RECENT MESOWEST WINDS GUSTS HAVE BEEN AROUND 60-70 MPH NEAR
DUGWAY/SALT FLATS. TEMPERATURE/DEWPOINT SPREADS ARE ON THE ORDER OF
40-50 DEGREES. THIS COMBINATION OF LARGE DEWPOINT DEPRESSION VALUES
AND STRONG WINDS ALOFT WILL SUPPORT ADDITIONAL STRONG TSTMS FOR THE
NEXT SEVERAL HOURS WITH SOME STRONG/SVR WINDS GUSTS LIKELY.

IN ADDITION TO THE THREAT OF STRONG WINDS...DRY LIGHTNING WILL ALSO
POSE A THREAT. FORECAST SOUNDINGS SHOW A STRONGLY MIXED ENVIRONMENT
TO NEARLY 500 MB WITH INVERTED-V PROFILES...SO SOME STORMS WILL
CONTAIN LITTLE OR NO RAIN.

..TAYLOR.. 08/01/2004

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

ATTN...WFO...RIW...SLC...PIH...LKN...

39801164 40201375 41961405 43251312 43831127 43481078
41951030 41161057 

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