textproduct: Salt Lake City

KEY MESSAGES, Issued 1032 PM MDT Sun Aug 2 2026

- Very hot temperatures will bring an increased threat of heat related illness to portions of southern and eastern Utah Monday. See Excessive Heat Warnings and Heat Advisories for more information.

- Critical fire weather conditions will continue across eastern and south central Utah ahead of a dry cold front Monday afternoon and evening.

- Across the San Rafael Swell and western Uinta Basin, gusty northwest winds and low humidities will continue to bring critical fire weather conditions through Tuesday. Elevated to locally critical fire weather conditions will continue in these areas into Wednesday.

- There is a marginal risk of excessive rainfall Thursday for portions of southwest and south central Utah. Highest threat areas will be slot canyons, normally dry washes and recent burn scars.

DISCUSSION, Issued 1032 PM MDT Sun Aug 2 2026

The forecast for the next several days will be hot, dry, with increasingly smoky skies for portions of the state. A dry cold front will continue to shift south across northern and central Utah through Monday morning, slowing or stalling across central Utah waiting until the upper level trough shifts into the High Plains before finally clearing southern Utah late Monday into early Tuesday.

The Widemouth 2 wildfire has produced prolific smoke across central Utah this afternoon and evening. Smoke modeling shifts this smoke into the Nephi area and east into the upper Sanpete Valley, Castle Country and the Wasatch Plateau overnight. This will cause decreasing air quality as well as reduced visibility in these areas. Price Airport has been reporting periods of visibility near 4-5SM...and this may worsen overnight.

Additional wildfires to the north and west of Utah will bring smoke aloft into much of Utah over the next several days. The Utah Department of Environmental Quality is forecasting several monitored basins across northern Utah to continue to see conditions meeting the orange/unhealthy for sensitive groups threshold through at least Monday if not Tuesday depending on the basin. Aside from air quality concerns, smoke in the area will also reduce visibility. For more information on how to mitigate the health impacts of smoke, please see air.utah.gov.

Hazy conditions from smoke are likely to continue through at least Wednesday across the region...with the worst conditions near active local wildfires like the Widemouth 2.

As far as heat, Excessive Heat Warnings were extended through Monday across the lower Washington County and Zion National Park areas. Temperatures may be 1 to 2 degrees lower than Sunday, however, overnight lows will remain near to above 80F, exasperating cumulative heat stress. Otherwise, going heat headlines remained in place.

Red Flag Warnings remain in effect for portions of eastern and southern Utah Monday and Tuesday. See the fire weather discussion for more information.

As a portion of the ensemble suite continues to suggest monsoonal moisture will build into southwest and south central Utah by Thursday. The Weather Prediction Center has outlooked this area in a marginal risk for excessive rainfall Thursday afternoon into Thursday night.

AVIATION

KSLC...Northwest winds and VFR conditions are forecast to persist at KSLC following the passage of a cold front. The next wind shift is expected around 04z with southerly drainage flow developing.

REST OF UTAH AND SOUTHWEST WYOMING...Winds will gradually become northwesterly across nearly all of our TAF sites within the period as a cold front continues to sweep across the area. Periodic gusts to around 20kts are possible across most sites with the highest confidence of this occurring at KPVU and KEVW this afternoon. Additionally, KHCR may continue to see borderline IFR vsbys this morning as smoke from the PNW wildfires continues to overspread the region. The smoke should begin to erode following sunrise, improving conditions to VFR.

FIRE WEATHER, Issued 453 AM MDT Mon Aug 3 2026

A cold front is currently progressing across northern UT into central UT this morning and will continue progressing southeast through this afternoon. This will result in a wind shift to northwesterly with a modest improvement to humidities, primarily across higher elevation locations. Areas currently southeast of the cold front will continue to see critical fire weather conditions this afternoon given little to no overnight recoveries and persistent breezy conditions. By Tuesday afternoon, the cold front will have crossed through UT, though breezy winds will persist bringing another round of critical fire weather conditions to the San Rafael Swell and western Uinta Basin Tuesday afternoon through the evening. Additionally, elevated to locally critical fire weather conditions will persist across both aforementioned locations Wednesday as we remain dry and breezy.

SLC WATCHES/WARNINGS/ADVISORIES

UT...Red Flag Warning until 9 PM MDT Tuesday for UTZ482.

Heat Advisory until 9 PM MDT this evening for UTZ114-120-121.

Red Flag Warning from noon today to 9 PM MDT Tuesday for UTZ489.

Red Flag Warning until 10 PM MDT this evening for UTZ481-483-484- 498.

Extreme Heat Warning until 9 PM MDT this evening for UTZ123-124- 128>131.

WY...Red Flag Warning until 9 PM MDT this evening for WYZ277.