A supercell thunderstorm developed across the Camas Prairie and peaked in intensity over western Clearwater County between Greer and Weippe. The storm unleashed severe winds and half-dollar hail causing close to a million dollars in property and crop damage. The U.S. Department of Agriculture (USDA) designated Clearwater County as a primary natural disaster area due to this wind and hail event on Sep. 3.

Hail in CLEARWATER, IDAHO
From 14-AUG-14 16:00:00 to 14-AUG-14 16:20:00 (PST-8)
Location: GREER
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A law enforcement office reported mostly 1 hail but a few were up to half-dollar size. The hail accumulated up to 12 inches in places.

Hail in CLEARWATER, IDAHO
From 14-AUG-14 16:00:00 to 14-AUG-14 16:20:00 (PST-8)
Location: WEIPPE
Magnitude: 1.25 
Property damage: 104.00K
Crop damage: 175.00K
Reported by: Public

A farmer reported major property and crop damage due to both large hail and wind. The property damage included 5 rental home roofs, siding from 3 homes, several windows, and 12 garage doors that either were dented or destroyed. Approximately 75% of his spring wheat crop, approximately 450 acres, was decimated by the wind and hail. In the 67 years that he has lived there, there was only one other storm that was comparable to this one. Back in 1963, a similar storm decimated his dad's crops.

Heavy Rain in CLEARWATER, IDAHO
From 14-AUG-14 16:00:00 to 14-AUG-14 16:20:00 (PST-8)
Location: GREER
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A law enforcement officer estimated that between 1 and 2 inches of rain fell and caused a nearby creek to swell to 3 feet in width and a couple feet in depth.

Heavy Rain in CLEARWATER, IDAHO
From 14-AUG-14 16:30:00 to 14-AUG-14 16:50:00 (PST-8)
Location: HEADQUARTERS
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP observer measured 1.66 inches of rainfall for the 24 hours ending at 7 am Aug. 15. Most likely this rainfall amount was associated with the supercell thunderstorm that tracked over the area.

Hail in CLEARWATER, IDAHO
From 14-AUG-14 16:00:00 to 14-AUG-14 16:20:00 (PST-8)
Location: WEIPPE
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 250.00K
Reported by: Other Federal Agency

The USDA reported that at least 400 acres of hard red spring wheat were destroyed and 700 acres were damaged.  They also reported that 183.6 acres of soft wheat were destroyed and 189.2 acres were damaged. All in all, the total crop damage tallied at $425,000.

Thunderstorm Wind in CLEARWATER, IDAHO
From 14-AUG-14 16:00:00 to 14-AUG-14 16:20:00 (PST-8)
Location: GREER
Magnitude: 56.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Law Enforcement

One tree, possibly a yellow pine, twisted off 20 to 30 feet above the ground. A 2nd yellow pine smashed into a vacant trailer house while a 3rd yellow pine was uprooted from the high winds. The severe winds combined with large hail also peppered the sides of a few farming structures.

Thunderstorm Wind in CLEARWATER, IDAHO
From 14-AUG-14 16:00:00 to 14-AUG-14 16:20:00 (PST-8)
Location: WEIPPE
Magnitude: 56.00 EG
Property damage: 17.00K
Crop damage: 0.00K
Reported by: Public

A farmer reported around 12 trees (pine and red fir) broke between 6 and 16 feet above the ground. A bull pine near 3 feet in diameter at the base, broke off around 6 feet from the ground and destroyed a trailer house.