Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 260253

Area Forecast Discussion
National Weather Service Salt Lake City UT
853 PM MDT Thu May 25 2017

.SYNOPSIS...The next upper trough will move across the area
Friday. A cool northerly flow will follow the trough on Saturday.
A warming trend starts Sunday and continues into mid week.


.DISCUSSION...A shortwave trough crossing northern Utah this
afternoon and evening has helped to maintain scattered convection
along a stalled baroclinic zone extending across central/southern
Utah. As this wave continues eastward anticipate this activity to
continue to decrease, although may persist into the overnight
across central and eventually portions of northern Utah east of
the Wasatch Front as the boundary retreats northward a bit. This
is in response to an upstream low currently dropping south along
the OR/ID border.

This upstream feature is forecast to eventually begin an
eastward trek late tonight into the morning hours Friday, with a
favorable area of large scale ascent spreading across northern
Utah late morning through mid afternoon, bringing a good chance of
showers and thunderstorms to the northern third of the forecast
area. With the retreating boundary, most of southern Utah will
reside in the warm sector resulting in warm and breezy conditions.

Updated to adjust PoPs based on radar trends, as well as to reduce
evening cloud cover across the north in the wake of the departing


.AVIATION...North winds are expected to prevail at KSLC through
the evening before switching to the south around 06Z. VFR
conditions will prevail through the night.





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