Strong thunderstorms brought flash flooding and large hail to both northern and southern Utah.

Flash Flood in WASHINGTON, UTAH
From 21-AUG-18 12:30:00 to 21-AUG-18 14:00:00 (MST-7)
Location: ZION LODGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Heavy rain caused flash flooding at Echo Canyon and some smaller canyons east of Zion National Park.

Flash Flood in WASHINGTON, UTAH
From 22-AUG-18 04:00:00 to 22-AUG-18 06:00:00 (MST-7)
Location: GRAFTON
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rain flooded several homes in Apple Valley.

Flash Flood in KANE, UTAH
From 23-AUG-18 12:27:00 to 23-AUG-18 14:00:00 (MST-7)
Location: GLEN CNYN BSN ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Heavy rain caused flash flooding at Kodachrome Basin State Park.

Flash Flood in WASHINGTON, UTAH
From 22-AUG-18 03:30:00 to 22-AUG-18 05:30:00 (MST-7)
Location: SPRINGDALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Heavy rain caused a large flash flood on the Virgin River in Zion National Park. The peak flow observed at the river was 4090 cfs.

Hail in SALT LAKE, UTAH
From 22-AUG-18 17:00:00 to 22-AUG-18 17:15:00 (MST-7)
Location: TAYLORSVILLE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Penny-sized hail was reported in Taylorsville.

Hail in GARFIELD, UTAH
From 23-AUG-18 11:58:00 to 23-AUG-18 12:15:00 (MST-7)
Location: CANNONVILLE
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Quarter-sized hail was reported in Cannonville.

Hail in KANE, UTAH
From 23-AUG-18 12:27:00 to 23-AUG-18 12:45:00 (MST-7)
Location: GLEN CNYN BSN ARPT
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Nickel-sized hail was reported at Kodachrome Basin State Park.

Hail in DUCHESNE, UTAH
From 22-AUG-18 17:00:00 to 22-AUG-18 17:15:00 (MST-7)
Location: ALTAMONT
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Quarter-sized hail was reported in Altamont.

Flash Flood in EMERY, UTAH
From 21-AUG-18 11:00:00 to 21-AUG-18 13:00:00 (MST-7)
Location: ORANGEVILLE
Flood cause: Heavy Rain / Burn Area
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain caused a large debris flow on the Trail Mountain Fire burn scar that clogged retention structures.

Flash Flood in EMERY, UTAH
From 21-AUG-18 19:17:00 to 21-AUG-18 21:00:00 (MST-7)
Location: MOHRLAND
Flood cause: Heavy Rain / Burn Area
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain resulted in the second debris flow of the day on the Trail Mountain Fire burn scar.

Flash Flood in WASHINGTON, UTAH
From 22-AUG-18 02:45:00 to 22-AUG-18 04:45:00 (MST-7)
Location: HURRICANE ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Heavy rain resulted in flash flooding in Zion National Park that caused the flow to increase to 1660 cfs.

Flash Flood in WASHINGTON, UTAH
From 22-AUG-18 06:00:00 to 22-AUG-18 08:00:00 (MST-7)
Location: BLOOMINGTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Heavy rain caused a flash flood on Fort Pearce Wash. The maximum observed flow was 5810 cfs.

Hail in DAVIS, UTAH
From 22-AUG-18 13:20:00 to 22-AUG-18 15:15:00 (MST-7)
Location: FARMINGTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Large hail was reported in Farmington, Kaysville, Fruit Heights, and Layton, with some stones as large as golf ball-sized.

Hail in WEBER, UTAH
From 22-AUG-18 15:00:00 to 22-AUG-18 15:15:00 (MST-7)
Location: UINTAH
Magnitude: 0.88 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Nickel-sized hail was reported in Huntsville and Uintah.

Flash Flood in WASATCH, UTAH
From 22-AUG-18 20:00:00 to 22-AUG-18 22:00:00 (MST-7)
Location: WALLSBURG
Flood cause: Heavy Rain / Burn Area
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain caused a large debris flow over the Dollar Ridge Fire burn scar. The nearby Strawberry River saw a peak flow of 2000 cfs.

Flash Flood in WASATCH, UTAH
From 22-AUG-18 21:00:00 to 22-AUG-18 23:00:00 (MST-7)
Location: WALLSBURG
Flood cause: Heavy Rain / Burn Area
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Heavy rain caused debris flows on the Coal Hollow Fire and Tank Hollow Fire burn scars.

Flash Flood in GARFIELD, UTAH
From 23-AUG-18 12:10:00 to 23-AUG-18 14:00:00 (MST-7)
Location: HENRIEVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

A thunderstorm produced heavy rain in the upper Paria River drainage that caused flash flooding in Cannonville.

Flash Flood in GARFIELD, UTAH
From 22-AUG-18 06:31:00 to 22-AUG-18 08:30:00 (MST-7)
Location: BOULDER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Heavy rain caused a flash flood along the Dirty Devil River, increasing the flow to 3540 cfs.

Hail in CACHE, UTAH
From 22-AUG-18 07:55:00 to 22-AUG-18 08:05:00 (MST-7)
Location: LEWISTON
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Penny-sized hail was reported in Lewiston.