Area Forecast Discussion
Issued by NWS Salt Lake City, UT
FXUS65 KSLC 170251
Area Forecast Discussion
National Weather Service Salt Lake City UT
851 PM MDT Sun Oct 16 2016
.SYNOPSIS...A Pacific storm system will cross the region tonight
and Monday, with a second storm system set to cross the region
Tuesday and Tuesday night. A ridge of high pressure will build
over the region for the latter half of the week.
.DISCUSSION...A strong southwest flow aloft is over the Great
Basin this eve downstream from a deep cold trof along the coast. A
frontal boundary remains draped across the nrn CWA from about
Evanston to Provo to Dugway. A broad swath of precip extends
across the far nrn CWA north of this front.
Gusty southwest winds continue across the CWA south of this front
with the strongest winds across the western valleys where speeds
are solidly into the advisory range with a few spots even
stronger. Will keep current suite of wind advisories going altho
it might be a bit marginal for the South Central and Southern
The front is forecast to continue lifting nwd for several more
hours before a leading short wave currently over NV and srn ID
pushes it back south after midnight. The precip will also retreat
north for a little longer then return south with this push. A
major portion of the cold air with the long wave ern Pac trof
arrives a few hours later and reinforces the cold front sending it
surging thru the CWA during the morning hours tomorrow. Post
frontal west winds will stay locally strong across WY and the
The precip will fill in along the Wasatch Front with this second
push but it turns showery by late morning and tapers off after
noon. Snow levels will fall to around 7000 ft or locally lower
once the colder air arrives but short duration of precip in the
cold air and warm surfaces should limit any impact on travel.
Expect a break in the weather Mon night but one last wave with the
rest of the cold air from the ern Pac trof crosses the nrn Great
Basin on Tue. Precip chances look to stay north of about Provo but
this wave does send a fairly strong dry front thru the rest of the
CWA Tue aftn with gusty northwest post frontal winds.
Dry and stable conditions will prevail for the rest of the week
with a warming trend.
Updated earlier to lower pops a little for this eve to the south
of the precip band and boost winds a bit over the south. No
additional updates planned.
.AVIATION...Northerly winds at KSLC should switch to southerly
around 03-05Z. However there is a 30 percent chance winds remain
northerly throughout the night. If southerly winds develop they will
likely switch to the west/northwest around 09-11Z. VFR conditions
should prevail until the front approaches around 09-11Z at which
time periods of precip and MVFR conditions will occur.
UT...Wind Advisory until 9 AM MDT Monday for UTZ004-015-016-020-518.
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