Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 230336

Area Forecast Discussion
National Weather Service Salt Lake City UT
836 PM MST Mon Jan 22 2018

.SYNOPSIS...A grazing storm system will exit northern Utah tonight.
High pressure aloft will return midweek before a fast moving storm
system impacts the area Thursday into Friday morning. High
pressure is expected to return for the upcoming weekend.


.DISCUSSION...A weak shortwave trough crossing the northern
Rockies this evening is brushing by northern Utah, but providing
enough ascent for spotty light precipitation primarily across the
higher terrain. KMTX radar imagery continues to show radar returns
streaming across northern Utah, and although most valleys have not
reported precipitation areas near the Idaho border such as Logan
have been reporting flurries/light snow over the past couple of
hours. Anticipate this to continue for the remainder of the
evening before heights begin to slowly rise overnight.

Satellite imagery indicates an extensive stratus deck remains in
place across much of northern Utah this evening as well. It seems
likely this cloud cover will remain banked along the terrain
through much of the overnight hours, and may well keep
temperatures elevated along much of the Wasatch Front overnight,
which would also likely translate into a warmer day Tuesday.

Updated earlier to increase PoPs and cloud cover through the
evening, and will look at increasing cloud cover overnight as well
as possibly raising min temps in the north.


.AVIATION...Winds at the SLC terminal are expected to remain
southerly overnight but there is a chance they become light and
variable at times between about 04-09z. Cigs will mostly remain
above 7000 feet but could briefly dip to around 5000ft AGL along
with light snow showers until about 06-07z.





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