Mill Creek Canyon trail users heading out July 22 face a real flash flood risk as monsoon thunderstorms return to the Wasatch Front.

The National Weather Service issued a Flood Watch for the Wasatch Mountains south of I-80, effective from noon Wednesday through the evening. The watch warns of possible flash flooding in slot canyons, normally dry washes, creeks, streams, and areas near recent burn scars including the Cottonwood and Forsyth fires.

ABC4 Utah meteorologist Noah Price reported Wednesday morning that a 15% (slight) risk of flash flooding exists within a 25-mile radius of the I-15 corridor from Cedar City to Logan. Flash flooding already hit the Cherry and Iron fire burn scars on July 21.

"If you do plan on heading out to do hiking or other recreational activities in flood-prone areas, remember to have a way to receive alerts if a Flash Flood Warning is issued," Price said. "If one is issued, get to higher ground immediately and never drive through flooded roadways, turn around and don't drown."

Drying out for Pioneer Day

Conditions improve quickly. The NWS forecast for Wednesday night calls for a 30% chance of showers and thunderstorms mainly before 9 p.m., with a low around 70 degrees. July 23 turns sunny with a high near 94 degrees.

By Pioneer Day, July 24, the flash flood risk will be "all but nonexistent," Price said, though temperatures will climb back to triple digits across the Wasatch Front.

For canyon closure questions, the Salt Lake Ranger District can be reached at 801-733-2660.

Upcoming

• Through December 14, 2026: Upper Mill Creek Canyon road closed; lower trails remain accessible.
• Friday, July 24: Pioneer Day. Dry conditions expected, highs near 100 degrees.