SWOMCD
SPC MCD 042042
COZ000-UTZ000-042145-
MESOSCALE DISCUSSION 1201
NWS STORM PREDICTION CENTER NORMAN OK
0342 PM CDT SUN JUL 04 2010
AREAS AFFECTED...PARTS OF FAR ERN UT AND FAR WRN CO
CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY
VALID 042042Z - 042145Z
STRONG WIND GUSTS...SOME POSSIBLY EXCEEDING 50 KT...ARE EXPECTED
ACROSS FAR ERN UT TO FAR WRN CO THIS AFTERNOON.
AT 2030Z...REGIONAL RADARS/VISIBLE SATELLITE IMAGERY SHOWED A FORCED
LINE OF CONVECTION WITH EMBEDDED TSTMS MOVING EWD THROUGH ERN
UT...WITH THIS ACTIVITY EXTENDING FROM ERN GARFIELD COUNTY THROUGH
NWRN SAN JUAN COUNTY TO UINTAH COUNTY. THIS N-S ORIENTED LINE OF
CONVECTION WAS LOCATED ALONG THE LEADING EDGE OF DEEP FORCING FOR
ASCENT ATTENDANT TO THE SHORTWAVE TROUGH MOVING EWD THROUGH UT ATTM
PER WATER VAPOR IMAGERY. EFFECTIVE BULK SHEAR 30-40 KT ORIENTED
PARALLEL TO THIS ACTIVITY/WIND SHIFT SHOULD MAINTAIN THE LINEAR
ORGANIZATION...DESPITE WEAK INSTABILITY. GREATEST THREAT SHOULD BE
FROM STRONG WIND GUSTS...GIVEN STEEP LOW LEVEL LAPSE RATES AND LARGE
SURFACE TEMPERATURE/DEWPOINT SPREADS OF 50-60 DEGREES PRECEDING THIS
LINE OF CONVECTION.
..PETERS.. 07/04/2010
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...GJT...SLC...
LAT...LON 37751030 38730944 39910939 40380942 40110813 39440781
38410811 37590869 37751030
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