Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 201629

Area Forecast Discussion
National Weather Service Salt Lake City UT
1029 AM MDT Mon Mar 20 2017

.SYNOPSIS...A mild southwest flow aloft will usher in a series of
weak weather disturbances through early Wednesday. A more active
pattern will develop during the latter half of the week, and
continue through the upcoming weekend.


.DISCUSSION...The axis of the upper ridge extending from the
southern Rockies through the Pacific Northwest will gradually
shift east over the next couple of days. The increasingly strong
southwest flow aloft ahead of the advancing upper trough currently
over the eastern Pacific will usher in a series of weak weather
shortwaves through early Wednesday.

The first of these shortwaves currently extends from north-
central Nevada through southwest Utah. This feature will lift
northeast across Utah today, then exit into Wyoming early this
evening. Weak isolated convection already forming over the
southern Wasatch/western Uintas will become better organized with
a modest increase in areal coverage along the this dynamic
feature during the afternoon hours. Sufficient moisture will exist
for measurable precip, though most of this will remain over the
higher terrain and will generally be light.

Subsequent shortwaves through early Wednesday will have an
increasingly better chance at precip as the eastern Pacific inches
closer to the west coast and slightly cooler air aloft moves
across Nevada and into western Utah.

A progressive pattern off the Pacific will begin during the
latter half of this week. A return to cooler more seasonal temps
and more substantial precip is likely for much of the state
through the upcoming weekend, and possibly into the early next


.AVIATION...Light and variable winds at the SLC terminal are
expected to become southerly for a time before shifting west to
northwest between 19-21Z. Showers are expected to remain largely
away from the terminal but there is a 10 percent chance of briefly
erratic winds near any showers in the vicinity.





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