An active monsoon surge brought several back-to-back days of thunderstorms producing heavy rain, damaging wind gusts, and hail across the state.

Flash Flood in WASHINGTON, UTAH
From 26-JUL-21 12:50:00 to 26-JUL-21 13:50:00 (MST-7)
Location: SPRINGDALE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

A significant flash flood wave in Pine Creek was reported by Zion National Park staff.

Dust Storm in EASTERN JUAB/MILLARD COUNTIES, UTAH
From 25-JUL-21 15:30:00 to 25-JUL-21 15:30:00 (PDT-7)
Property damage: 300.00K
Crop damage: 0.00K
Reported by: Department of Highways

Thunderstorm outflow winds generated blowing dust with near zero visibility along Interstate 15 near milepost 152 south of Fillmore. This resulted in a multi vehicle pileup with at least 22 vehicles involved, 8 fatalities, and 10 injuries. The nearest mesonet site located 7 miles south of the crash site recorded a wind gust to 32 mph around the time of the crash, at approximately 430 PM MDT.

Flash Flood in IRON, UTAH
From 25-JUL-21 20:52:00 to 25-JUL-21 21:52:00 (MST-7)
Location: PAROWAN ARPT
Flood cause: Heavy Rain
Property damage: 300.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Iron County Emergency Manager reported six feet of water flowed over a flood control barrier in Paragonah, resulting in flash flooding in the city. Several homes were flooded. Fifty people were stranded in Red Creek Canyon east of the city.

Flash Flood in IRON, UTAH
From 26-JUL-21 13:42:00 to 26-JUL-21 14:42:00 (MST-7)
Location: HAMILTONS FT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Water flowed across many roadways in Cedar City, including across Interstate 15 near milepost 59.

Flash Flood in GARFIELD, UTAH
From 26-JUL-21 14:30:00 to 26-JUL-21 15:30:00 (MST-7)
Location: ESCALANTE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Newspaper

A video showed flash flooding at the confluence of Birch and North Creeks into the Escalante River.

Flash Flood in GARFIELD, UTAH
From 26-JUL-21 14:30:00 to 26-JUL-21 17:45:00 (MST-7)
Location: ESCALANTE MUNI ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Escalante River gauge near Escalante indicated a rise from 3 CFS to 1060 CFS, a rise of 4 feet.

Flash Flood in KANE, UTAH
From 26-JUL-21 19:00:00 to 26-JUL-21 20:00:00 (MST-7)
Location: ADAIRVILLE
Flood cause: Heavy Rain
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Grand Staircase-Escalante National Monument officials reported that significant damage was sustained on House Rock Road near Wire Pass due to flash flooding.

Flash Flood in KANE, UTAH
From 26-JUL-21 20:42:00 to 26-JUL-21 21:42:00 (MST-7)
Location: GLEN CANYON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A received video showed a flood wave with significant debris moving through Big Water, UT.

Flash Flood in KANE, UTAH
From 26-JUL-21 22:15:00 to 27-JUL-21 01:15:00 (MST-7)
Location: ADAIRVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Paria - Kanab gauge on the Paria River indicated a rise from 23 CFS to 1450 CFS with the primary flood wave.  The time above 1000 CFS was from 2315 MDT to 0130 MDT.

Thunderstorm Wind in BOX ELDER, UTAH
From 28-JUL-21 15:14:00 to 28-JUL-21 15:14:00 (MST-7)
Location: PENROSE
Magnitude: 52.00 EG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Public

Social media video showed strong winds, small hail, and heavy rain in Penrose.  A garage door was damaged.  The peak wind gust was estimated at 60 mph.

Tornado in WEBER, UTAH
From 28-JUL-21 16:30:00 to 28-JUL-21 16:31:00 (MST-7)
Location: MARRIOTT
Tornado F-scale: EFU
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

LANDSPOUT. A weak, but well-formed, landspout tornado was observed in multiple videos shared via social media.

Thunderstorm Wind in DUCHESNE, UTAH
From 28-JUL-21 20:28:00 to 28-JUL-21 20:28:00 (MST-7)
Location: BRIDGELAND
Magnitude: 58.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

The Five Mile automated weather station recorded a peak wind gust of 67 mph. The gust appeared to be associated with a microburst from a decaying thunderstorm.

Hail in WASHINGTON, UTAH
From 24-JUL-21 15:06:00 to 24-JUL-21 15:06:00 (MST-7)
Location: VEYO
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Hail up to 1 inch in diameter fell at the Veyo Pool Resort. Time estimated by radar.

Thunderstorm Wind in WASHINGTON, UTAH
From 24-JUL-21 13:24:00 to 24-JUL-21 13:24:00 (MST-7)
Location: ROCKVILLE
Magnitude: 56.00 EG
Property damage: 80.00K
Crop damage: 0.00K
Reported by: State Official

Hildale dispatch reported 10 power poles down throughout the city, along with multiple downed trees. Time estimated by radar.

Flash Flood in GARFIELD, UTAH
From 24-JUL-21 15:00:00 to 24-JUL-21 16:30:00 (MST-7)
Location: TROPIC
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Video received showed significant flows through a normally dry wash just south of Tropic, including a mature fully grown tree floating beneath an underpass along Bryce Highway. In addition, Bryce Canyon National Park officials reported the closure of the Queens Garden Trail, Navajo Loop, and the road to Bryce Point due to flooding.

Flash Flood in WASHINGTON, UTAH
From 24-JUL-21 13:45:00 to 24-JUL-21 14:45:00 (MST-7)
Location: ROCKVILLE
Flood cause: Heavy Rain
Property damage: 50.00K
Crop damage: 0.00K
Reported by: Public

Video received showed 2 to 3 feet deep water flowing down a street in Hildale, eroding a portion of the road.

Flash Flood in WASHINGTON, UTAH
From 24-JUL-21 15:02:00 to 24-JUL-21 16:02:00 (MST-7)
Location: ZION NATIONAL PARK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Zion National Park officials reported flash flooding in portions of the park, including the  Narrows, Kolob Canyons, and Telephone Canyon.

Flash Flood in WASHINGTON, UTAH
From 24-JUL-21 16:20:00 to 24-JUL-21 18:20:00 (MST-7)
Location: GUNLOCK
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

The manager of Veyo Pool Resort reported a 7 foot rise on the Santa Clara River. Campsites were evacuated near the river.

Flash Flood in WAYNE, UTAH
From 27-JUL-21 12:30:00 to 27-JUL-21 13:30:00 (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 across Scenic Drive in multiple locations, including Grand Wash and across State Route 24, closing the road. A muddy debris flow was also reported in Sulphur Creek.

Flash Flood in IRON, UTAH
From 25-JUL-21 13:45:00 to 25-JUL-21 15:15:00 (MST-7)
Location: PAROWAN ARPT
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The Iron County Emergency Manager reported flooding in Parowan. Floodwaters moved protective concrete barriers for the power plant and pushed them into the power plant  building.

Flash Flood in IRON, UTAH
From 25-JUL-21 14:45:00 to 25-JUL-21 15:45:00 (MST-7)
Location: PAROWAN ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Video received showed deep and swift moving water flowing westward down Center Street and 700 E in Paragonah. Flows originated from Red Creek, which empties into Paragonah from the east. Radar estimated up to 2.15 inches of rain upstream over the Red Creek drainage.

Thunderstorm Wind in IRON, UTAH
From 25-JUL-21 15:10:00 to 25-JUL-21 15:10:00 (MST-7)
Location: (CDC)CEDAR CITY ARPT
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Interstate 15 at Milepost 62.5 automated weather station recorded a wind gust of 61 mph.

Heavy Rain in WASHINGTON, UTAH
From 25-JUL-21 17:55:00 to 25-JUL-21 17:55:00 (MST-7)
Location: BLOOMINGTON
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heavy rainfall of 1.05 inches was observed in about 55 minutes.

Thunderstorm Wind in BEAVER, UTAH
From 25-JUL-21 15:10:00 to 25-JUL-21 15:10:00 (MST-7)
Location: BEAVER
Magnitude: 52.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree fell on a power line in Greenville.