BOISE — The estimated size of the Pine Creek Fire northeast of Boise grew from 800 acres Tuesday morning to 1,500 acres Tuesday evening.
Fly-over infrared data taken Monday night indicated the fires true size, an Idaho Department of Lands spokeswoman said. It is believed to be human-caused, and investigators were trying to determine how it started.
The fire, which started about 3 p.m. Monday, is burning near Pine Creek Road and Grimes Creek Road. Earlier Tuesday, it was burning east and already had crossed Casner Mountain into the Warm Springs Ridge area, according to the IDL.
Wind gusts and lightning didn't prevent firefighters from successfully burning out the southern and southeast flanks of the fire along Wildcat Gulch Road and Grimes Creek Road, the IDL reported.
No buildings were threatened by the blaze.
Grimes Creek Road had been closed at Idaho 21, but it was reopened about 7 p.m. to local traffic. Officials said it could be closed again at any time because of the danger of rolling rocks and falling limbs.
About 90 personnel were working the night shift. The U.S. Forest Service, Bureau of Land Management and Idaho Department of Lands were working jointly, along with volunteer fire department crews from Clear Creek, Valley of the Pines, Wilderness Ranch and Idaho City.
The Great Basin Type 2 (regional) Incident Management Team arrived Tuesday in Boise and will assume command of the fire Wednesday morning, the IDL said.
Travelers on Idaho 21 are urged to use caution.
View Pine Creek Fire in a larger map
Other Idaho fires:
This lightning-caused fire, about 40 miles west of Salmon near the Middle Fork of the Salmon River, had grown to more than 4,400 acres Tuesday. It grew from about 3,700 acres Monday evening.
The U.S. Forest Service was reporting that the fire was in steep, inaccessible terrain and was burning grass, brush and pockets of timber.
Rocks, falling trees and dense smoke were creating hazards in the area, and people traveling in the area were being urged to be careful.
Boaters on the Middle Fork of the Salmon River are required to check in with forest personnel at the Flying B Ranch to determine if there are changes in campsite reservations, based on fire activity or fire operations.
ROUGH CREEK FIRE
This fire burning in steep, rugged terrain along the Salmon River six miles east of Riggins was caused by a lightning strike July 12 and had grown to 2,600 acres by Tuesday afternoon. It was approximately 650 acres on Monday.
Five smokejumpers and five Hotshot teams were working to contain the blaze, according to official reports. Fire engines were protecting buildings near Allison Creek.
A broad area east and north of Riggins remained closed. That area begins at the Nez Perce National Forest boundary near Island Bar and extends north to a half-mile past Chair Creek. The eastern border of the restricted area starts one mile west of Spring Bar Campground and stretches two-and-a-half miles north. County Road 1614 (Salmon River Road) and Grangeville-Salmon Road #221 were not affected.