Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 290430

Area Forecast Discussion
National Weather Service Salt Lake City UT
1030 PM MDT Wed Sep 28 2016

.SYNOPSIS...A storm system will continue to cross the area
through Thursday while moisture increases, especially across
southern and eastern Utah. Lingering moisture will persist into
Friday before a cold front pushes into northwest Utah on Saturday.


.DISCUSSION...A storm system continues to lift across the desert
southwest...taking the form of a closed low centered over the
southern Sierra Nevada this evening with a shortwave trough ejecting
across central/northern Utah ahead of it. Isolated to scattered
showers continue to develop across southern and central Utah near
the closed low and will linger through much of the night. Meanwhile,
along the leading edge of the ejecting shortwave, another area of
showers with embedded thunderstorms exists across portions of
northern Utah given an axis of modest instability from around
Wendover to near Logan. Although the airmass will trend more stable
through the night, these showers will also linger through late

Moisture will continue to increase across southern/eastern Utah
aided by a tap of tropical moisture. This is expected to bring
increased precipitation to the southeastern half of the forecast
area tomorrow. Parts of this region will also be under the right
entrance region of a jet streak which will cross central Utah
tomorrow afternoon. This will help support precipitation potential
and with PWATs climbing to over an inch...locally heavy rain will be
possible with some of the stronger storms. Otherwise, remnants of
the aforementioned closed low will also eject across northwest Utah
so isolated so scattered showers and thunderstorms will exist across
the northwestern half of the forecast area.


.AVIATION...Winds at the SLC terminal are expected to switch to the
southeast by 06-07Z. There is a 10 percent chance that additional
showers will bring erratic winds and CIGS briefly below 7kft
tonight...otherwise expect VFR conditions to persist.





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