130
FXUS65 KSLC 250506
AFDSLC

Area Forecast Discussion
National Weather Service Salt Lake City UT
1106 PM MDT Fri Jul 24 2026

.KEY MESSAGES...

- Somewhat drier air will move into the area over the weekend,
  decreasing the threat of showers and thunderstorms. However,
  moisture is expected to increase again starting Tuesday.

- Hot temperatures as high as the lower 100s can be expected for
  the valleys of northwest Utah as well as the Uinta Basin
  through Monday. Overnight lows will remain elevated, limiting
  the potential for overnight relief from the heat.

&&

.DISCUSSION...High pressure centered near the Four Corners area
today will shift east for the weekend. This will turn the flow
over Utah to more southwesterly, allowing some drier air to spread
into the area. The mean PWAT from the NBM dips to below 0.9 inches
across portions of southwest and central Utah on Saturday, with
these values spreading into northern Utah on Sunday. This would be
a change from the 1-1.3 inches analyzed the area this evening. As
a result, expect convective coverage to decrease for Saturday and
become confined mostly to near the mountains and across southwest
Utah. Even though the airmass will be drier for Sunday, models
suggest a weak vort max rotating around the high will lift across
southeast Utah. This will provide some dynamics which could bring
increased convective coverage to portions of southern Utah.

Moisture looks to increase back into the area late Monday into
Tuesday as the flow aloft transitions back to a more southerly
component as the ridge amplifies and starts drifting back towards
the Four Corners. Expect convection to increase in coverage again
through around Thursday as a result. Thereafter, the high
pressure is progged to drift west towards northwest AZ and
southwest UT towards the end of the week. This would then cut of
the moisture and bring a drier airmass into the area.

With a strong ridge in place, temperatures are expected to be
unseasonably hot, particularly for the valleys of northwest Utah,
including the Wasatch Front, as well as the Uinta Basin. Maxes are
expected to rise as high as the lower 100s through Monday, with
the monsoon moisture keeping overnight lows elevated. For large
portions of northwest Utah, lows are expected to stay in the mid
to upper 70s, providing little relief from the heat overnight.
Because of the anticipated increased risk of heat related illness
in this pattern, a Heat Advisory is in effect for the Wasatch
Front, northwest Utah, the Cache Valley, and the Uinta Basin.
The return of moisture by Tuesday is expected to moderate
temperatures some, though they will remain around 5F above normal
for northern portions of the area.

&&

.AVIATION...
KSLC...Mostly VFR conditions will persist for the KSLC terminal
through the TAF period. Winds will remain mostly south to
southeast through the night. A 20-30% chance of showers and
thunderstorms can be expected Saturday afternoon, which would
produce gusty and erratic winds. Winds look to settle in a
northerly direction by late afternoon. There is a 40% chance that
outflows from thunderstorms bring gusty northwest winds Saturday
evening, delaying the wind shift back to south.

REST OF UTAH AND SOUTHWEST WYOMING...Mostly VFR conditions will
persist through the TAF period. Isolated showers and
thunderstorms will continue to taper off overnight. Erratic and
gusty winds remain possible near these showers and thunderstorms,
otherwise winds will become more diurnally driven by late
tonight. Isolated to scattered showers and thunderstorms will
redevelop Saturday afternoon, mainly near the mountains, in
northwest Utah, and in southwest Wyoming.

&&

.FIRE WEATHER, Issued 129 PM MDT Fri Jul 24 2026...
Scattered showers and thunderstorms will again
develop this afternoon, with the best coverage over the higher
terrain of southern Utah this afternoon into the early evening.
Any storms that develop will be capable of producing gusty winds
and lightning as well as the potential for wetting rains. Other
than thunderstorm winds, high pressure will bring generally light
and terrain driven winds. Drier air moving into the area over the
weekend will cause a gradual decrease in coverage of showers and
thunderstorms through Monday. With this drier air moving in,
portions of western and southern Utah are expected to see minimum
relative humidity values approach critical levels on Saturday,
with the potential becoming more widespread Sunday into Monday.
Moisture is expected to start to increase again over the area
beginning Tuesday.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...Heat Advisory until midnight MDT Monday night for UTZ101>107-114.
WY...None.

&&

$$

PUBLIC...Cheng
AVIATION...Cheng
FIRE WEATHER...Traphagan

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