A deep low pressure system anchored in the Gulf of Alaska and a zonal flow pattern across the Pacific Northwest and Intermountain West provided the right ingredients for a sustained moisture plume which produced convection and periods of moderate to heavy rain over a three day period causing flooding and flash flooding, and severe thunderstorms across Southeast Oregon and Southwest Idaho.

Thunderstorm Wind in ADA, IDAHO
From 04-JUN-10 13:45:00 to 04-JUN-10 14:30:00 (MST-7)
Location: (BOI)GOWEN FLD BOISE
Magnitude: 51.00 MG
Property damage: 10.00K
Crop damage: 0.00K
Reported by: ASOS

The BOI ASOS measured a wind gust of 59 MPH and NWS employees reported downed trees and fences in Southeast Boise along Surprise Valley Way. Ada County Emergency Manager reported power lines down in Southwest Boise and trees and traffic lights down in Garden City.

Flood in WASHINGTON, IDAHO
From 04-JUN-10 16:00:00 to 05-JUN-10 08:00:00 (MST-7)
Location: CAMBRIDGE
Flood cause: Heavy Rain
Property damage: 1.00M
Crop damage: 0.00K
Reported by: Emergency Manager

Washington County Emergency Manager reported flooding along the Weiser River from Cambridge to Weiser.

Flood in ELMORE, IDAHO
From 04-JUN-10 08:00:00 to 04-JUN-10 20:00:00 (MST-7)
Location: FEATHERVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Wagon Town RAWS reported over 1.5 inches of rain and radar and satellite estimates indicated over 1 inch during the event which included damaged and sections of washed out roads.

Flash Flood in ADAMS, IDAHO
From 03-JUN-10 07:00:00 to 03-JUN-10 10:00:00 (MST-7)
Location: INDIAN VLY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Culverts on Mill Creek were plugged with debris causing road flooding.

Flood in BOISE, IDAHO
From 04-JUN-10 08:00:00 to 04-JUN-10 17:00:00 (MST-7)
Location: GARDEN VLY
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Park/Forest Service

Rockslides and flooding on Banks to Lowman Road and Highway 21 closed sections of the roads.

Flood in VALLEY, IDAHO
From 04-JUN-10 08:00:00 to 04-JUN-10 23:00:00 (MST-7)
Location: MC CALL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Numerous roads were flooded or washed out around the McCall area including portions of Highway 55, Warren Wagon Road, Falls Creek Road and Lick Creek Road.

Flood in ADAMS, IDAHO
From 04-JUN-10 09:00:00 to 05-JUN-10 09:00:00 (MST-7)
Location: COUNCIL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Flooding occurred across portions of Highway 95 and a trained spotter near Glendale reported over 1.30 inches of rain during an 11 hour period and flooding into fields along the Weiser River.

Flash Flood in VALLEY, IDAHO
From 04-JUN-10 14:00:00 to 04-JUN-10 20:00:00 (MST-7)
Location: MC CALL
Flood cause: Dam / Levee Break
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Department of Highways

Browns Pond Dam east of McCall partially failed due to heavy rain, and spilled onto Lick Creek Road, washing out parts of the road.

Thunderstorm Wind in WASHINGTON, IDAHO
From 04-JUN-10 12:00:00 to 04-JUN-10 13:00:00 (MST-7)
Location: WEISER
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Washington County Emergency Manager reported large trees down on power lines on Cove Road west of Weiser and an out building was leveled just south of Weiser.

Flood in GEM, IDAHO
From 04-JUN-10 10:00:00 to 11-JUN-10 02:00:00 (MST-7)
Location: EMMETT
Flood cause: Heavy Rain
Property damage: 1.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Moderate flooding occured in and around Emmett along the Payette River.

Flood in PAYETTE, IDAHO
From 05-JUN-10 17:00:00 to 10-JUN-10 19:00:00 (MST-7)
Location: PAYETTE
Flood cause: Heavy Rain
Property damage: 1.00M
Crop damage: 0.00K
Reported by: NWS Storm Survey

Moderate flooding occured in and around Payette along the Payette River.

Flash Flood in WASHINGTON, IDAHO
From 04-JUN-10 13:00:00 to 04-JUN-10 19:00:00 (MST-7)
Location: CAMBRIDGE
Flood cause: Heavy Rain
Property damage: 140.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Washington County Emergency Manager reported Rush Creek was flooding on roads just east of Cambridge and flooding on Advent Gulch Road northwest of Cambridge.