Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 270259

Area Forecast Discussion
National Weather Service Salt Lake City UT
859 PM MDT Sun Mar 26 2017

.SYNOPSIS...High pressure will shift east tonight ahead of the
next Pacific storm system for Monday and Tuesday.


.DISCUSSION...Shortwave ridging which crossed the forecast area
during the day Sunday has shifted east into western Colorado this
evening, as the next Pacific trough moves inland along the West
Coast. This trough is forecast to move inland and across the
Intermountain region during the day Monday, evolving into a closed
low as it progresses eastward across Utah Monday evening. The
models have been fairly consistent developing precipitation across
west central Utah overnight along the nose of an upper jet,
spreading into the southern Wasatch front and points south Monday
morning. As the upper trough axis crosses the area tomorrow
afternoon and eventually develops a closed circulation,
precipitation is expected to become more widespread across much of
northern Utah while continuing across the central and southwest.
700mb temps dropping to near -7C on the back side of this trough
will drop snow levels below 6 kft Monday evening, before the upper
low pulls east of the area during the morning hours Tuesday.

Updated earlier to adjust cloud cover as well as increase
overnight PoPs across west central Utah overnight. Otherwise going
forecast looks in reasonable shape.


.AVIATION...VFR conditions are expected to prevail at KSLC through
the overnight hours with south winds prevailing. CIGs will likely
drop below 7 kft after 12z, with periods of MVFR CIGs possible
Monday morning.





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