Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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707
FXUS65 KSLC 170235
AFDSLC

Area Forecast Discussion
National Weather Service Salt Lake City UT
835 PM MDT Wed Aug 16 2017

.SYNOPSIS...A warming and drying trend will take place across the
area through Friday. Moisture will increase again from the south
over the weekend.

&&

.DISCUSSION...A weak sheared short wave trof is over UT this eve
with considerable cloud cover in place except across the far
south. A few light showers are still noted on radar across
portions of central and ern UT but these have weakened from
earlier today and are no longer electrified. Temps today warmed
back up to near normal across most of the CWA.

The trof continues to shear out across the CWA overnight thru
tomorrow leaving a weak deformation axis across the south in
between the drier wnw flow thru the nrn Rockies and nrn Great
Basin, and a weak closed low over srn CA. This same basic pattern
lasts thru Fri before the CA low phases with a new trof over the
PacNW and the flow over UT backs around to sly. This lifts the
deformation axis into nrn UT on Sat and allows moisture to
gradually return to the area from the south on Sun.

Temps will warm a bit more into the weekend across the north but
will remain fairly steady over the south.

Updated earlier to add pops to more of the north and east. Updated
again to remove pops from the northwest and removed mention of
thunder overnight from all zones. No additional updates planned.

.PREVIOUS DISCUSSION...Concerning eclipse viewing on
Monday...some level of cloud cover looks to be likely during the
viewing period. Shortwave ridging across northern Utah could
create enough dynamic subsidence to limit the expected cloud cover
during the morning. Any shift to the ridge axis will change the
calculus, but for now it appears that impacts from cloud cover
will be on the low side across northern/central Utah and southwest
Wyoming.


&&

.AVIATION...Winds at the SLC terminal will shift to southeasterly
between 03-04Z.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...None.
WY...None.
&&

$$

Wilensky

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