An active monsoon surge brought thunderstorms producing heavy rain, damaging wind gusts, and hail across the state.

Flash Flood in WAYNE, UTAH
From 02-AUG-21 15:36:00 to 02-AUG-21 16:36:00 (MST-7)
Location: FRUITA
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Capitol Reef National Park officials reported flash flooding in Grand Wash.

Flash Flood in WAYNE, UTAH
From 02-AUG-21 16:18:00 to 02-AUG-21 17:18:00 (MST-7)
Location: NOTOM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Capitol Reef National Park officials reported flash flooding on several drainages in the Park.

Flash Flood in KANE, UTAH
From 01-AUG-21 03:00:00 to 01-AUG-21 04:30:00 (MST-7)
Location: ADAIRVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

The Paria River near Kanab gauge recorded a peak flow of 865 CFS.

Flash Flood in SALT LAKE, UTAH
From 01-AUG-21 18:15:00 to 01-AUG-21 18:15:00 (MST-7)
Location: COTTONWOOD HGTS
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Department of Highways

Big Cottonwood Canyon Road was closed due to flash flooding carrying debris and rocks across the roadway.

Flash Flood in EMERY, UTAH
From 02-AUG-21 12:35:00 to 02-AUG-21 15:30:00 (MST-7)
Location: HUNTINGTON
Flood cause: Heavy Rain / Burn Area
Property damage: 3.00K
Crop damage: 0.00K
Reported by: Department of Highways

UDOT reported two flash floods the Trail Mountain Fire burn scar flowed across state Route 31 between milepost 40 and milepost 44.

Flash Flood in DAVIS, UTAH
From 01-AUG-21 18:57:00 to 01-AUG-21 19:13:00 (MST-7)
Location: CENTERVILLE
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Flash flooding was reported on the Bountiful Bench, with water flowing through a home.

Flood in UTAH, UTAH
From 01-AUG-21 19:56:00 to 01-AUG-21 20:56:00 (MST-7)
Location: OLMSTEAD
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Public

Numerous reports, videos, and photos of water over roadways near Utah Valley University in the vicinity of Interstate 15 were received.

Flood in SALT LAKE, UTAH
From 01-AUG-21 19:15:00 to 01-AUG-21 22:00:00 (MST-7)
Location: FT DOUGLAS
Flood cause: Heavy Rain
Property damage: 750.00K
Crop damage: 0.00K
Reported by: Department of Highways

Multiple roadways across the greater Salt Lake Valley were flooded. A portion of Interstate 80 was closed near 1300 East, as was Interstate 215 near Millcreek.

Flash Flood in RICH, UTAH
From 01-AUG-21 12:16:00 to 01-AUG-21 13:16:00 (MST-7)
Location: RANDOLPH
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: COOP Observer

An observer reported 3 feet of rocks, mud, and water flooded into a ranch basement and nearly moved a second home off its foundation near the Crawford Mountains.

Flash Flood in WAYNE, UTAH
From 01-AUG-21 13:15:00 to 01-AUG-21 14:45:00 (MST-7)
Location: TORREY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Capitol Reef National Park officials reported flash flooding on Sulphur Creek and the Fremont River, along with muddy conditions on Scenic Drive. The initial flood wave through Sulphur Creek contained black boulders.

Flash Flood in PIUTE, UTAH
From 01-AUG-21 13:57:00 to 01-AUG-21 14:57:00 (MST-7)
Location: KINGSTON
Flood cause: Heavy Rain
Property damage: 1.10K
Crop damage: 0.00K
Reported by: County Official

County dispatch reported Kingston Canyon was underwater with rock and debris over a portion of state Route 62.

Thunderstorm Wind in TOOELE, UTAH
From 01-AUG-21 14:55:00 to 01-AUG-21 14:55:00 (MST-7)
Location: (DPG)MICHAEL AAF DUG
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

An automated weather station recorded a peak wind gust of 63 mph.

Hail in IRON, UTAH
From 01-AUG-21 14:55:00 to 01-AUG-21 14:55:00 (MST-7)
Location: ENOCH
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Penny-sized hail was reported.

Hail in IRON, UTAH
From 01-AUG-21 15:00:00 to 01-AUG-21 15:00:00 (MST-7)
Location: ENOCH
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter-sized hail was reported via social media.

Flash Flood in DUCHESNE, UTAH
From 01-AUG-21 15:00:00 to 01-AUG-21 16:30:00 (MST-7)
Location: FRUITLAND
Flood cause: Heavy Rain / Burn Area
Property damage: 1.10K
Crop damage: 0.00K
Reported by: County Official

A debris flow moved across a road in Timber Canyon.

Flash Flood in IRON, UTAH
From 01-AUG-21 15:19:00 to 01-AUG-21 17:30:00 (MST-7)
Location: ENOCH
Flood cause: Heavy Rain
Property damage: 9.00M
Crop damage: 0.00K
Reported by: Emergency Manager

Widespread flash flooding occurred in Enoch and Cedar City, with up to 300 homes damaged by flood waters.  Water rescues were performed, and cars were swept off the road.  Interstate 15 was closed during the event.  Numerous roads were eroded by floodwaters, and Fiddlers Canyon was reported underwater.

Thunderstorm Wind in TOOELE, UTAH
From 01-AUG-21 17:35:00 to 01-AUG-21 17:35:00 (MST-7)
Location: MARSHALL
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

The Bolinder Field-Tooele Valley Airport AWOS recorded a peak wind gust of 60 mph.

Flash Flood in TOOELE, UTAH
From 01-AUG-21 17:45:00 to 01-AUG-21 17:45:00 (MST-7)
Location: (T62)TOOELE
Flood cause: Heavy Rain
Property damage: 1.00M
Crop damage: 0.00K
Reported by: Public

In Tooele, 37 homes were flooded. Additionally, multiple roads were closed due to flooding.

Thunderstorm Wind in TOOELE, UTAH
From 01-AUG-21 17:50:00 to 01-AUG-21 17:50:00 (MST-7)
Location: LAKE PT
Magnitude: 54.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

An automated weather station recorded a peak wind gust of 62 mph.

Flood in DAVIS, UTAH
From 01-AUG-21 20:20:00 to 01-AUG-21 21:20:00 (MST-7)
Location: CLINTON
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Department of Highways

Several lane on Interstate 15 near Bountiful were closed due to standing water. Hill Field Road near Hill Air Force Base was flooded.  Basement flooding occurred in Centerville.

Flash Flood in EMERY, UTAH
From 01-AUG-21 23:15:00 to 02-AUG-21 00:15:00 (MST-7)
Location: MOHRLAND
Flood cause: Heavy Rain
Property damage: 1.00M
Crop damage: 0.00K
Reported by: Law Enforcement

A significant flood wave carrying debris moved down Bear Creek Canyon, sweeping away mining vehicles at the Gentry Mountain Mine. Several miners were caught in the flood waters, with one miner able to save himself by clinging to a tree a quarter mile down the drainage. Another miner was not able to escape the flood waters and was found deceased 6 miles downstream. Another Mine car was flipped 8 times in the flood waters, but the miners were able to kick out the windows and escape. Significant infrastructure damage occurred at the Mine.