Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 220321

Area Forecast Discussion
National Weather Service Salt Lake City UT
921 PM MDT Sun May 21 2017

.SYNOPSIS...A weather disturbance will move out of the state
tonight. High pressure aloft will expand east across the Great
Basin through Tuesday then shift east Wednesday. The next storm
system will impact the region during the latter half of the week.


.DISCUSSION...The axis of the upper trof crossing the CWA sits
across srn UT this eve with a band of dissipating convection along
it. Another pocket of convection extends from the central Wasatch
mtns ewd across the Uintas.

The srn UT convection should exit the CWA shortly as the trof axis
sweeps it out while the nrn area could linger a little longer into
the late evening before it too dissipates.

Expect mostly clear skies overnight after the convection ends as
the upstream ridge expands into the Great Basin. The rising
heights and warming airmass Mon thru Tue send temps to near normal
Mon and above normal by Tue with the CWA staying dry.

The ridge shifts east Wed as a new broad trof sags into the PacNW
and nrn Rockies. Altho the main trof is forecast to stay to our
north thru the end of the week, this lowers heights across the
CWA and brings a threat of diurnal convection starting Wed aftn.

Will update shortly to remove most pops for the rest of the
evening. No additional updates planned.


.AVIATION...Winds at the SLC terminal will shift to southeast
about 04-5Z with a 40 percent chance of not shifting until 06Z.
VFR conditions will prevail through the TAF period under mostly
clear skies.





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