Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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591
FXUS65 KSLC 180233
AFDSLC

Area Forecast Discussion
National Weather Service Salt Lake City UT
833 PM MDT Wed Oct 17 2018

.SYNOPSIS...An upper level low over northern Arizona will move
slowly north across Utah through Thursday. High pressure aloft
will build in behind the exiting low Friday and Saturday.
Unsettled weather will return for early next week.

&&

.DISCUSSION...A closed low is centered over southeast Utah this
evening, with valley rain/mountain snow falling over eastern Utah
in its vicinity. The low will continue to move very slowly
northward tonight into tomorrow morning before weakening and
shifting east tomorrow afternoon and evening. QPF totals will be
decent over eastern Utah, but snow levels around 8,000 feet will
limit associated impacts. With the trough in place, the airmass
will remain relatively cool, with maxes tomorrow running at least
5F below seasonal normals for most locations.

With the trough exiting by Friday, high pressure centered over the
Pacific Northwest will build over Utah and southwest Wyoming,
resulting in a warming trend that will bring temperatures near
climo by Saturday. The high is progged to slide over a trough over
the California coast, centering itself east of the area by
Saturday night. This trough will eventually slide into the
forecast area for the early part of the upcoming week, bringing an
increasing chance for precip in a continued seasonable airmass.

No updates expected to the forecast this evening.

&&

.AVIATION...The SLC terminal will see VFR conditions through the
night with some mid-level clouds. Southeast winds are expected
through the overnight hours.

&&

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

$$

Traphagan

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For frequently asked questions about the Area Forecast Discussion
visit...
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