Severe weather developed ahead of a low moving into Oregon as a moist, southerly flow provided the fuel for wildfire threat associated with the copious lightning activity and flash flood, high wind and large hail theats across Southeast Oregon and Southeast Idaho.

Tornado in TWIN FALLS, IDAHO
From 22-JUL-08 13:30:00 to 22-JUL-08 14:00:00 (MST-7)
Location: (TWF)TWIN FALLS ARPT
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

An eyewitness reported a tornado on the ground for 30 seconds about 10 miles south of Twin Falls, or 4 miles south of the Twin Falls Airport.

Flash Flood in ELMORE, IDAHO
From 22-JUL-08 12:00:00 to 22-JUL-08 12:30:00 (MST-7)
Location: ATLANTA GRAHAM ARPT
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Forest Service Roads were washed out with debris flows. The top end of Fall Creek road was washed out and the West Fork of James Creek near Atlanta road was also washed out. A new washout scar was seen in the wilderness area near Jackson Peak on the Upper North Fork of the Boise River.

Thunderstorm Wind in BOISE, IDAHO
From 22-JUL-08 10:15:00 to 22-JUL-08 10:30:00 (MST-7)
Location: PLACERVILLE
Magnitude: 78.00 MG
Crop damage: 0.00K
Reported by: Mesonet

Town Creek RAWS reported a thunderstorm wind gust of 90 MPH.

Thunderstorm Wind in JEROME, IDAHO
From 22-JUL-08 14:30:00 to 22-JUL-08 15:00:00 (MST-7)
Location: HAZELTON
Magnitude: 52.00 EG
Reported by: Broadcast Media

Thunderstorm winds knocked down several trees and power lines and also damaged farm vehicles and irrigation pivots.

Flash Flood in VALLEY, IDAHO
From 22-JUL-08 12:25:00 to 22-JUL-08 12:55:00 (MST-7)
Location: YELLOW PINE ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Several mudslides closed Forest Road 48 from McCall to Yellow Pine. Powerlines were reported down and motorists were stranded on the road. Additionally, two washouts across Warm Lake Highway were reported by the Department of Highways.

Thunderstorm Wind in ADA, IDAHO
From 22-JUL-08 10:20:00 to 22-JUL-08 10:30:00 (MST-7)
Location: MERIDIAN
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Broadcast Media

Thunderstorm winds caused power outages to 6000 customers in Meridian, Boise and Eagle.

Hail in TWIN FALLS, IDAHO
From 22-JUL-08 13:20:00 to 22-JUL-08 13:30:00 (MST-7)
Location: AMSTERDAM
Magnitude: 0.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Two trained spotters near Hollister reported heavy rain with penny sized hail.

Hail in JEROME, IDAHO
From 22-JUL-08 13:50:00 to 22-JUL-08 14:00:00 (MST-7)
Location: HAZELTON
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

KMVT relayed a report of large hail up to 1.75 inches in Hazelton.

Thunderstorm Wind in BOISE, IDAHO
From 22-JUL-08 11:15:00 to 22-JUL-08 11:30:00 (MST-7)
Location: PLACERVILLE
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: County Official

Thunderstorm winds blew down trees and power lines along Harris Creek Road and knocked down trees and power lines in the Wilderness Ranch area.

Thunderstorm Wind in BOISE, IDAHO
From 22-JUL-08 11:10:00 to 22-JUL-08 11:30:00 (MST-7)
Location: LOWMAN
Magnitude: 52.00 EG
Crop damage: 0.00K
Reported by: Other Federal Agency

Thunderstorm winds blew down large trees and power lines at Pine Flat Campground west of Lowman.

Flash Flood in BOISE, IDAHO
From 22-JUL-08 12:00:00 to 22-JUL-08 12:30:00 (MST-7)
Location: LOWMAN
Flood cause: Heavy Rain
Property damage: 100.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Forest Service Roads were washed out with debris flows. The top end of Fall Creek road was washed out and the West Fork of James Creek near Atlanta road was also washed out. A new washout scar was seen in the wilderness area near Jackson Peak on the Upper North Fork of the Boise River.