Several rounds of thunderstorms brought severe weather hazards to the state of Utah, including flash flooding in southern and eastern Utah, and damaging winds, hail, and a tornado in Northern Utah.

Flash Flood in WASHINGTON, UTAH
From 01-SEP-21 07:21:00 to 01-SEP-21 08:21:00 (MST-7)
Location: ZION LODGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Zion National Park rangers reported flash flooding in slot canyons between Temple of the Sun and Twins.

Flash Flood in WAYNE, UTAH
From 01-SEP-21 15:59:00 to 01-SEP-21 16:59:00 (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 6 inches of water flowing across state Route 24 in several locations east of Fruita. UDOT also reported 6 inches of water flowing across state Route 24 between mileposts 81 and 84.

Flash Flood in WAYNE, UTAH
From 01-SEP-21 18:00:00 to 01-SEP-21 20:00:00 (MST-7)
Location: (4HV)HANKSVILLE
Flood cause: Heavy Rain
Property damage: 3.00M
Crop damage: 0.00K
Reported by: State Official

A significant flash flood occurred in the town of Hanksville, with nearly every structure in town impacted by flooding. Floodwaters were reportedly as deep as 6 feet in places. Rainfall totals were 1.2 inches in Hanksville, and were as high as 1.7 inches in the Henry Mountains. In Capitol Reef National Park, 1.66 inches fell.

Flood in WAYNE, UTAH
From 01-SEP-21 19:14:00 to 01-SEP-21 21:14:00 (MST-7)
Location: CAINEVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

The Fremont River overflowed its banks between Hanksville and Caineville, making state Route 24 impassible east of Capitol Reef National Park.

Flood in GARFIELD, UTAH
From 01-SEP-21 21:00:00 to 02-SEP-21 21:00:00 (MST-7)
Location: BOULDER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

The Dirty Devil - Poison Springs Above Hanskville gauge indicated a rise from a baseline around 500 CFS to 14100 CFS, or from a gauge height of about 8 feet to about 21 feet. According to United States Geological Survey, the peak flow rate of 14100 CFS ranks as the 6th highest peak flow rate for all water years back to 1948. The peak gauge height of 21 feet ranks as the 3rd highest peak gauge height for all water years back to 1948.

Thunderstorm Wind in TOOELE, UTAH
From 02-SEP-21 15:50:00 to 02-SEP-21 15:50:00 (MST-7)
Location: DUGWAY
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The English Village Dugway automated weather station recorded a peak wind gust of 59 mph.

Tornado in DAVIS, UTAH
From 02-SEP-21 17:28:00 to 02-SEP-21 17:34:00 (MST-7)
Location: BOUNTIFUL SKY HVN AR
Tornado F-scale: EF1
Property damage: 0.00K
Crop damage: 750.00K
Reported by: NWS Storm Survey

A tornado first touched down in North Salt Lake at Redwood Road and 900 W around 628 PM MDT. The tornado moved to the northeast through a mix of industrial and residential areas. The tornado produced EF0 damage (winds 65 to 85 MPH) to numerous trees and several homes in the Cloverdale neighborhood. The tornado continued to move off to the northeast, producing more EF0 damage to the Woods Cross Public Works building and a nearby construction site. The tornado reached peak intensity along 1100 W, producing EF1 damage (winds 86 to 110 MPH) where it uprooted a healthy mature tree and leaned a wooden power pole. The tornado continued to the north, weakening, but still producing EF0 damage before lifting off the ground.
The tornado then made a second touchdown in a field near 800 W where it produced EF0 damage to a business in the area and began moving northward along 800 W. Tree damage and minor property damage indicative of an EF0 tornado was widespread along this swath. Large diameter tree limbs (in excess of 12 inches) were broken off and deposited throughout the area. The tornado then dissipated in the area of 1500 S and Interstate 15 around 634 PM MDT.
The rating for this tornado is EF1 with winds as high as 110 MPH. The tornado had an intermittent track length of about 2 miles over 7 minutes and a max-width of approximately 350 yards with an average width of approximately 150 yards.

Hail in DAVIS, UTAH
From 02-SEP-21 17:31:00 to 02-SEP-21 17:31:00 (MST-7)
Location: WOODS CROSS
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Hail up to 3/4 of an inch in diameter fell in Wood Cross.

Hail in SALT LAKE, UTAH
From 02-SEP-21 17:09:00 to 02-SEP-21 17:09:00 (MST-7)
Location: SALT LAKE CITY
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail up to 1 inch in diameter fell in Salt Lake City.

Hail in SALT LAKE, UTAH
From 02-SEP-21 17:15:00 to 02-SEP-21 17:15:00 (MST-7)
Location: EAST MILL CREEK
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail up to 3/4 of an inch in diameter fell in East Mill Creek.

Hail in DAVIS, UTAH
From 02-SEP-21 17:45:00 to 02-SEP-21 17:45:00 (MST-7)
Location: ROSEDALE
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail up to 3/4 of an inch in diameter fell in Rosedale.

Flash Flood in GARFIELD, UTAH
From 02-SEP-21 17:45:00 to 02-SEP-21 19:45:00 (MST-7)
Location: ESCALANTE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Escalante River gauge near Escalante rose from 375 CFS to a peak of 1840 CFS.

Thunderstorm Wind in TOOELE, UTAH
From 02-SEP-21 20:35:00 to 02-SEP-21 20:35:00 (MST-7)
Location: (DPG)MICHAEL AAF DUG
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Upper Cedar Mountain automated weather station recorded a peak wind gust of 59 mph.

Thunderstorm Wind in TOOELE, UTAH
From 02-SEP-21 21:40:00 to 02-SEP-21 21:40:00 (MST-7)
Location: ELLERBECK
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Interstate 80 at Milepost 81 Dolomite automated weather station recorded a peak wind gust of 58 mph.