Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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000
FXUS65 KSLC 060459
AFDSLC

Area Forecast Discussion
National Weather Service Salt Lake City UT
959 PM MST Mon Dec 5 2016

.SYNOPSIS...A  colder storm system will bring light snow and the
coldest temperatures of the season to most of Utah and southwest
wyoming for tomorrow. An active and potentially wetter pattern will
again set up late week through the weekend.

&&

.DISCUSSION...A west-northwesterly flow is in place across the area
this evening with a cold airmass settling in behind the storm system
that is now moving into the Great Plains. Latest RAP analysis shows
h7 temperatures ranging from -3C across far southern Utah to -17C
over the Bear Lake region. Some areas of clouds earlier this evening
have now become less abundant, with the high clouds across far
southern Utah continuing to shift farther south while a band of
stratus over portions of central/northern Utah is gradually
thinning. This loss of cloud cover combined with a fairly dry
airmass should lead to sufficient radiative cooling leading to a
cold night before additional clouds spread into the area late
tonight. These clouds are in advance of the next trough which will
sag into the area tomorrow. Increasing instability owing to colder
air aloft accompanying the trough and some lift associated with an
upper jet punching into Utah will lead to the development of snow
tomorrow afternoon through tomorrow night mainly across
northern/central Utah. A colder airmass coupled with a lack of deep
moisture suggests that snowfall will not be heavy, but low-density
snow will lead to some light accumulations across the area.

Updated the forecast mainly to reduce cloud cover and lower
overnight mins.

&&

.AVIATION...Conditions at the SLC terminal are expected to
remain at VFR levels through the night with southeast winds
prevailing.

&&

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

$$

Cheng

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