Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 171755

Area Forecast Discussion
National Weather Service Salt Lake City UT
1155 AM MDT Mon Jul 17 2017

.SYNOPSIS...A ridge of high pressure will remain in place across
the region through mid week, resulting in continued hot
temperatures. Lingering moisture will continue to bring a few
showers and thunderstorms to the area today, followed by a drying
trend Tuesday. Deeper moisture will spread into the area Wednesday
and Thursday and may bring the potential for heavy rain to
central and southern Utah.


.DISCUSSION...Upper level ridge axis remains in place over the
southern plains keeping southwest flow aloft over Utah. With
lingering moisture in place anticipate isolated thunderstorms this
afternoon across northern and central Utah with scattered
convection developing across the south. SBCAPE values have already
increased to 500-1000 J/KG across south central and southwest
Utah. However, there is still a bit of convective inhibition to
overcome and coverage of showers and storms is very minimal at
this time. Expect that to change this afternoon and inhibition
weakens and terrain driven convection develops and then outflow
mergers expand coverage of valley location.

Severe threat seems low across the south as deep layer shear
values remain minimal. However, along the northern periphery of
the convective activity across west central Utah through the
southern Wasatch Front, an isolated stronger storm is possible
where stronger deep layer shear is present. With precipitable
water values in excess of an inch across south central and
southwest Utah, and very slow storm motions expected, there is
some risk for flash flooding there this afternoon and evening.

Otherwise, another day with above normal temperatures across
Utah and southwest Wyoming.


.AVIATION...Southeast winds will continue at the SLC
terminal through about 19-20Z then shift to the northwest. There is
a 20 percent chance that outflow winds from isolated thunderstorms
and buildups over the surrounding mountains may impact the terminal
between 23 and 02Z.





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