textproduct: Salt Lake City

KEY MESSAGES, Issued 1056 PM MDT Sat Jul 25 2026

- Somewhat drier air will move into the area through the weekend, decreasing the threat of showers and thunderstorms. However, moisture is expected to increase again by 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, with highs in the upper 100s for portions of southern Utah, including Zion National Park. Overnight lows will remain in the 70s to around 80, limiting the potential for overnight relief from the heat.

DISCUSSION, Issued 1056 PM MDT Sat Jul 25 2026

Broad high pressure centered east of the Four Corners area along with a weak shortwave trough lifting across the PacNW has brought a drier southwesterly flow to Utah. This has reduced PWATs to around 0.9 inches in southern and central Utah, although a pocket of 1-1.2 inches exists across northwest Utah. Convection across southern Utah remained fairly isolated across southern Utah today as a result. Across northwest Utah, however, the moisture pocket and associated instability combined with increased shear owing to the proximity of the upper jet has allowed more scattered convection along with stronger storms today. These storms will continue to cross north-central Utah through late this evening before dissipating. An outflow boundary associated with these storms will continue to bring enhanced winds to portions of northern Utah until shortly after midnight.

The drier southwesterly flow will continue through Sunday and into early Monday. PWATs below 1 inch will spread into northern Utah Sunday. While this will bring a decreased threat of convection to northern Utah, a vort max rotating around the high is progged to lift across southeast Utah. This will aid in bringing increased convection to portions of southern and central Utah once again.

Despite the drying, enough moisture will be around to keep low temperatures elevated. In the valleys, this means that many valley locations will stay in the 70s to around 80 overnight with high temperatures rising above 100F, with the lack of relief contributing to an increased risk for heat related illness. As a result, heat highlights remain in place through Monday.

As the ridge amplifies, expect the flow aloft to turn more southerly, drawing moisture into the area once again late Monday or Tuesday. As such, a period of more active convection is expected to return, but this should be relatively brief. The high pressure will start to drift westward mid/late week, ending up near southwest UT/northwest AZ for the weekend. This will bring a drier airmass into the area, with the drying trend beginning as early as Thursday, and could potentially continue through at least the early part of next week.

AVIATION

KSLC...VFR conditions to continue through the TAF period. Typical diurnal wind shifts are expected through Monday, with southerly winds this morning switching northwesterly after 19z, then switching back to southeasterly after 04z. Showers move into the Salt Lake valley after 04z, with a 15-20% chance to impact the terminal with gusty and erratic winds through 12z.

REST OF UTAH AND SOUTHWEST WYOMING...Scattered showers and thunderstorms are expected today across southern and eastern Utah, with storms capable of producing brief heavy rainfall, lightning, and gusty and erratic outflow winds to 40 kts. VFR conditions prevail overall for most regional terminals, though heavier rainfall could bring brief VIS reductions. Showers spread into northern Utah late this evening, with potential to bring gusty and erratic outflow winds through roughly 12z.

FIRE WEATHER, Issued 433 AM MDT Sun Jul 26 2026

Lingering monsoonal moisture will yield isolated to scattered showers and thunderstorms each afternoon through Wednesday, with greatest coverage favoring southern and eastern Utah. Storms through this period will be capable of producing gusty and erratic outflow winds upwards of 40-50 mph. There is also a threat for isolated heavy rainfall, capable of producing flash flooding if a strong cell moves over sensitive terrain. High pressure develops over the region Thursday onward, yielding a downtrend in relative humidity statewide through next weekend. Widespread critically dry conditions with poor overnight humidity recoveries develop statewide by Friday.

SLC WATCHES/WARNINGS/ADVISORIES

UT...Heat Advisory until midnight MDT Monday night for UTZ101>107-114- 124-128-130.

Extreme Heat Warning until midnight MDT Monday night for UTZ131.

WY...None.