678 
FXUS65 KSLC 100332
AFDSLC

Area Forecast Discussion
National Weather Service Salt Lake City UT
932 PM MDT Tue Oct 9 2018

.SYNOPSIS...An unsettled and cool pattern will continue across 
the region with multiple disturbances expected to impact Utah 
through the end of the week.

&&

.DISCUSSION...A Pacific Northwest storm system is making its way
into northern Utah this evening with the associated front on the
leading edge near a KTPH-KSLC line. A broad area of precipitation
has developed along and behind this boundary and will continue to
track east as the system does tonight into tomorrow morning. Snow
levels are progged to drop to the 6000-6500 foot range with 
significant accumulations anticipated in southwest Wyoming as well
as the mountains of northern Utah. Snow levels could be low 
enough for accumulations at Parley's Summit, which would impact 
travel during the morning commute. Going Winter Weather Advisory 
covers this threat well. Some showers will linger over
northeastern portions of the forecast area into the afternoon
hours as the system pulls away. 

The progressive pattern will continue during the latter half of
the week with a somewhat weaker shortwave bringing the threat of
precipitation to primarily central and southern Utah Wednesday
night into Thursday, although moisture and dynamics are not as
impressive as those with the system currently moving through
northern Utah. A drier backdoor system may bring some of the
coldest air so far this season to northern and central Utah over
the weekend, though associated moisture looks limited at this
time. In addition to keeping precip in the forecast, the parade of
storm systems will also keep temperatures well below seasonal
normals through the end of the forecast period. 

Updated the forecast earlier to adjust POPs with current radar
trends. No additional updates planned. 

&&

.AVIATION...MVFR conditions are expected to prevail in rain
through about 10-12Z, though some periods of improvement to low-
end VFR conditions are possible before that time. Northwest winds
will continue through the overnight hours. 

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Winter Weather Advisory until 9 AM MDT Wednesday for UTZ007>010.

WY...Winter Weather Advisory until 9 AM MDT Wednesday for WYZ021.

&&

$$

Traphagan

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