Thunderstorm activity was relentless through the end of July, with more flash flooding, primarily in southern Utah, as well as more widespread severe thunderstorms, in both northern and southern Utah.

Flash Flood in KANE, UTAH
From 28-JUL-10 19:45:00 to 28-JUL-10 21:45:00 (MST-7)
Location: GLEN CANYON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Flash flooding was reported in Wahweep Wash and Warm Creek, causing road damage across the area.

Flash Flood in KANE, UTAH
From 28-JUL-10 19:30:00 to 28-JUL-10 21:30:00 (MST-7)
Location: ALTON
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: State Official

Flash flooding occurred along the Skutumpah Road slot canyons, including Johnson Wash.

Flash Flood in KANE, UTAH
From 29-JUL-10 16:00:00 to 29-JUL-10 18:00:00 (MST-7)
Location: GLEN CANYON
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Extensive flash flooding occurred across the area, including flooding in Croton Canyon, Warm Springs, and other tributaries. Minor flooding also occurred on Wawheap Creek.

Flash Flood in WASHINGTON, UTAH
From 30-JUL-10 17:40:00 to 30-JUL-10 19:40:00 (MST-7)
Location: SANTA CLARA
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Houses and basements were flooded in both Santa Clara and Ivins. In addition, the water flowing over Santa Clara Drive was 1 foot deep and 40 feet wide.

Thunderstorm Wind in BOX ELDER, UTAH
From 27-JUL-10 17:30:00 to 27-JUL-10 17:30:00 (MST-7)
Location: GROUSE CREEK
Magnitude: 52.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

Rosebud RAWS recorded a maximum wind gust of 60 mph.

Thunderstorm Wind in TOOELE, UTAH
From 27-JUL-10 17:30:00 to 27-JUL-10 17:30:00 (MST-7)
Location: PEHRSON STATION
Magnitude: 55.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: RAWS

The Vernon Hill RAWS recorded a wind gust of 63 mph.

Hail in WASHINGTON, UTAH
From 30-JUL-10 16:51:00 to 30-JUL-10 16:51:00 (MST-7)
Location: SANTA CLARA
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Local law enforcement reported one inch diameter hail in Santa Clara.

Thunderstorm Wind in WASHINGTON, UTAH
From 30-JUL-10 17:30:00 to 30-JUL-10 17:30:00 (MST-7)
Location: SANTA CLARA
Magnitude: 50.00 EG
Property damage: 30.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Multiple power lines were reported down in Santa Clara.

Thunderstorm Wind in TOOELE, UTAH
From 30-JUL-10 19:55:00 to 30-JUL-10 19:55:00 (MST-7)
Location: BARRO
Magnitude: 51.00 MG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

The West of Wildcat Mountain sensor in the Dugway Proving Ground mesonet recorded a wind gust of 59 mph.

Flash Flood in WASHINGTON, UTAH
From 27-JUL-10 19:30:00 to 27-JUL-10 21:30:00 (MST-7)
Location: NEW HARMONY
Flood cause: Heavy Rain / Burn Area
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Heavy rain fell on the Mill Flat burn scar near New Harmony, causing a debris flow and flash flooding in New Harmony. The flooding emanated primarily from Pinto Creek, and to a lesser extent, from Main, Dam, and Straight Canyons.

Flash Flood in CARBON, UTAH
From 31-JUL-10 17:30:00 to 31-JUL-10 19:00:00 (MST-7)
Location: EAST CARBON CITY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Flash flooding occurred in Bottom, Gate, and Cottonwood Canyons.  Bulldozers had to clean off nearby roads to open them for business, and some tourists had to be rescued.

Flash Flood in KANE, UTAH
From 28-JUL-10 18:30:00 to 28-JUL-10 20:30:00 (MST-7)
Location: GLEN CANYON
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Flash flooding caused roads to be damaged and washed out in Croton and Last Chance Canyons. Park rangers could not access these canyons due to the road damage.

Flash Flood in WASHINGTON, UTAH
From 31-JUL-10 16:44:00 to 31-JUL-10 18:44:00 (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 occurred in Keyhole Canyon and Pine Creek Canyon, a technical slot canyon.