The first major monsoon surge of the summer moved into Utah on the second week of July. This moist airmass produced several flash floods, including multiple floods in Capitol Reef National Park. In northern Utah, where the lower levels of the atmosphere remained drier, some thunderstorms also produced severe wind gusts.

Flash Flood in WASHINGTON, UTAH
From 11-JUL-11 20:10:00 to 11-JUL-11 22:10:00 (MST-7)
Location: ZION LODGE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Flash flooding in Zion National Park stranded visitors along the North Fork of the Virgin River, specifically in the Orderville Canyon area.

Flash Flood in WAYNE, UTAH
From 11-JUL-11 12:25:00 to 11-JUL-11 14:25:00 (MST-7)
Location: NOTOM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Widespread flash flooding occurred in Capitol Reef National Park. Water crossed the Scenic Drive in multiple locations from the visitors center to the Slickrock Divide, forcing rangers to close the road. In addition, flash flooding was reported in Sulphur Creek.

Flash Flood in WAYNE, UTAH
From 10-JUL-11 15:05:00 to 10-JUL-11 17:05:00 (MST-7)
Location: NOTOM
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Park rangers in Capitol Reef National Park reported flash flooding along Sulphur Creek.

Thunderstorm Wind in BOX ELDER, UTAH
From 10-JUL-11 18:10:00 to 10-JUL-11 18:40:00 (MST-7)
Location: WHEELON STATION
Magnitude: 66.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The SR-30 sensor recorded strong wind gusts for half an hour, with a maximum gust of 76 mph.

Thunderstorm Wind in CACHE, UTAH
From 09-JUL-11 17:40:00 to 09-JUL-11 17:40:00 (MST-7)
Location: RICHMOND
Magnitude: 52.00 EG
Property damage: 55.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A large barn was knocked down in Richmond and several trees were reported down across the area.

Thunderstorm Wind in TOOELE, UTAH
From 09-JUL-11 15:00:00 to 09-JUL-11 15:00:00 (MST-7)
Location: GOLD HILL
Magnitude: 53.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The West Salt Flats sensor in the Dugway Proving Ground mesonet recorded a maximum wind gust of 61 mph.

Thunderstorm Wind in TOOELE, UTAH
From 09-JUL-11 15:40:00 to 09-JUL-11 15:40:00 (MST-7)
Location: (DPG)MICHAEL AAF DUG
Magnitude: 50.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Wig Mountain sensor in the Dugway Proving Ground mesonet recorded a wind gust of 58 mph.

Thunderstorm Wind in TOOELE, UTAH
From 09-JUL-11 16:25:00 to 09-JUL-11 16:30:00 (MST-7)
Location: KNOLLS
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Diddle Knoll sensor in the Dugway Proving Ground mesonet recorded a maximum wind gust of 59 mph.

Thunderstorm Wind in BOX ELDER, UTAH
From 09-JUL-11 16:30:00 to 09-JUL-11 16:30:00 (MST-7)
Location: KELTON
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The Locomotive Springs sensor recorded a maximum wind gust of 59 mph.

Flash Flood in KANE, UTAH
From 08-JUL-11 14:00:00 to 08-JUL-11 16:00:00 (MST-7)
Location: GLEN CANYON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

A fast moving thunderstorm just north of Big Water created a large flash flood in the Wahweep drainage. This flood stranded two people for some time.

Thunderstorm Wind in TOOELE, UTAH
From 07-JUL-11 17:35:00 to 07-JUL-11 18:15:00 (MST-7)
Location: GOLD HILL
Magnitude: 56.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

A few different sensors just east of Wendover recorded strong wind gusts, including 64 mph at the UDOT I-80 at Milepost 29 sensor, 60 mph at the West Salt Flats sensor, and 59 mph at the North Salt Flats sensor.