Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 071756

Area Forecast Discussion
National Weather Service Salt Lake City UT
1056 AM MST Wed Dec 7 2016

.SYNOPSIS...A cold airmass will remain over the region through
tonight. A relatively mild but moist westerly flow develops
Thursday and continues through the upcoming weekend.


.DISCUSSION...A cold airmass remains in place across the Great
Basin this morning and skies have mostly cleared out across the
CWA. A little lingering low level moisture and instability brought
lake effect snow to areas just south of the GSL earlier but this
has weakened and is beginning to drift off to the east instead.
Local stratus also persists over portions of the nrn mtns and
across central UT. Expect a few flurries to persist in these areas
through midday then end.

A warm front moves into the Great Basin tonight at the leading
edge of a moist and fairly mild westerly flow developing in the
Pac. Mid and high clouds increase tonight across UT ahead of the
warm front with the front itself arriving Thu aftn. Expect precip
to begin across mainly the nrn CWA late tomorrow and persist on
and off thru Sat. This should bring heavy snows to the nrn mtns
with precip flipping to rain in the valleys by mid morning Fri at
the latest. However, it will start as snow in the valleys and
could result in significant accumulation by Fri morning especially
from about OGD north with large amounts possible in the Ogden

Current Winter Storm Watch for the nrn mtns looks on track and we
will likely need additional winter weather highlights for lower
elevations for Thu night into Fri.

Updated forecasts earlier to lower pops near the GSL and adjust
sky cover somewhat. No additional updates planned at this time.


.AVIATION...VFR conditions are expected at the SLC terminal
through the evening. Cigs at or below 6000 feet are expected to
dissipate between 19Z and 21Z. Northwest winds are expected to
continue during the daylight hours before a switch to
southeasterly after 02z.


UT...Winter Storm Watch from Thursday afternoon through Saturday
     afternoon for UTZ007>009.




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