Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 190336

Area Forecast Discussion
National Weather Service Salt Lake City UT
936 PM MDT Wed Apr 18 2018

.SYNOPSIS...Southerly flow will strengthen Thursday ahead of an
upper low which will cross the region Thursday night into Friday.
High pressure will follow for the upcoming weekend.


.DISCUSSION...An upper low currently off the central California
coast will slowly make its way inland tonight into tomorrow and
eventually cross southern Utah late tomorrow afternoon through
Friday morning. Ahead of this approaching low, southerly flow is
increasing and thickening high clouds have spread into Utah. This,
combined with a general warming of the airmass, will lead to much
warmer overnight mins across the forecast area.

The airmass will remain relatively dry ahead of the approaching low,
so precipitation will be more prevalent on the back side of the low
with the wraparound moisture. As such, precipitation chances will be
highest tomorrow evening through Friday morning and focused more
across the southern and central Utah closer to the low center. The
airmass will remain relatively mild with this storm, with snow
levels remaining above 5500-6000ft.

Only made minor adjustments to the forecast to increase sky cover
for the rest of the night.


.AVIATION...VFR conditions will prevail at KSLC through the night
with high CIGS. South winds should become re-established by 04-05z.





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