textproduct: Salt Lake City

KEY MESSAGES, Issued 1056 PM MDT Sat Jul 25 2026

- Isolated showers and thunderstorms are expected across northeast Utah as well as a portion of central Utah on Tuesday as moisture temporarily decreases. Moisture will increase again on Wednesday, bringing an increased threat of flash flooding across central and southern Utah, before decreasing substantially from Thursday onward. - Significant heat temporarily and marginally subsides on Tuesday and Wednesday before increasing in intensity once again by Thursday forward. High temperatures will only moderate to the upper-90s on the Wasatch Front and mid-100s in the lowest elevations of southern Utah before increasing by upwards of 5-7 degrees over the weekend.

DISCUSSION, Issued 239 PM MDT Mon Jul 27 2026

Moisture remains in place over much of the forecast area today, allowing for another day of scattered showers and thunderstorms across central and southern Utah with more isolated coverage across northern Utah. As of 150PM, shower and thunderstorm activity is already well underway for central central Utah, as well as a portion of northern Utah. This activity is expected to continue through the remainder of the heating hours across the region. That said, it will be difficult for storms to sustain themselves as they drift off terrain features due to a lack of upper level support.

An area of drier air is expected to work its way into the forecast area tomorrow which will act to decrease the overall potential for convection during the heating hours. As such, coverage of showers and thunderstorms are expected to be much more isolated on Tuesday afternoon, particularly limited to the high terrain in northeastern and a portion of central Utah. Due to decreasing PWAT values and lack of lower level moisture, the overall threat for heavy rainfall and flash flooding will be quite low, but not impossible, tomorrow afternoon. Moisture is anticipated to surge northward once again on Wednesday, bringing one more round of scattered showers and thunderstorms capable of producing heavy rainfall and flash flooding across the eastern half of Utah.

From Thursday forward, the area of high pressure (the center of which is currently just east of the Four Corners region) will shift south and west while an offshore trough remains parked over the PacNW region, helping to introduce a drier air mass into the region. As such, any chance for showers and thunderstorms will be greatly reduced as we finally rid the forecast area of monsoonal moisture. Contrarily, we'll begin to see some of the driest conditions since the monsoonal moisture arrived over the area in mid-July as afternoon humidity falls back into the single-digits for many low lying areas. Pairing with the very dry conditions, afternoon high temperatures are expected to rise back into the low- to mid-100s on the Wasatch Front, with lower Washington county potentially rising into the low-110s. Overnight low temperatures are also expected to remain elevated during this time which will limit the amount of relief from the daytime heat. Risk for heat related illness is likely to increase again through this period (Thursday through Sunday).

AVIATION

KSLC...The SLC terminal will see VFR conditions through the evening with cigs remaining well above 6000 ft AGL. Northwesterly winds are expected to shift to the southeast between 03Z and 04Z. There is a 20-30 percent chance of light rain showers over or in the vicinity of the terminal this evening, with the most likely time between 01Z and 05Z. Any showers that develop would have the potential to bring gusty and erratic winds. Tomorrow, expect a wind shift back to northwest between 19-20z. There is a 30 percent chance of showers and thunderstorms tomorrow afternoon.

REST OF UTAH AND SOUTHWEST WYOMING...The airspace will see prevailing VFR conditions through the evening. Scattered showers and thunderstorms will continue especially across central Utah this evening before diminishing after midnight. Any storms that develop will have the potential to produce gusty and erratic winds, lightning, and brief mountain obscurations. Winds will settle into a typical light nighttime drainage pattern overnight. Tomorrow, scattered showers and thunderstorms will redevelop, focusing more across northern Utah and southwest Wyoming.

FIRE WEATHER, Issued 239 PM MDT Mon Jul 27 2026

Moisture will remain in place over the eastern half of Utah today while the western half of the area will remain largely dry as the area battles between drier and wetter air masses. Another day of scattered showers and thunderstorms will be the result over the high terrain features today across central and southern Utah, with more isolated coverage expected across northern Utah. A temporary drying of the lower level environment is expected on Tuesday, greatly reducing the coverage of showers and thunderstorms and allowing for relative humidity to begin its downward trend through the remainder of the week. That said, moisture is expected to make one last push through the area on Wednesday, bringing an increase in shower and thunderstorm coverage across the eastern half of the area while the western half remains dry. Thereafter, a significant area wide drying is expected alongside rebuilding of heat as an area of high pressure shifts to the west. As such, anticipate temperatures increasing Thursday forward across the area as well as humidity falling back into the single-digits to low-teens late in the week and through the upcoming weekend.

SLC WATCHES/WARNINGS/ADVISORIES

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

Extreme Heat Warning until midnight MDT tonight for UTZ131.

WY...None.