Another fire has popped-up in western Montana, east of the Bitterroot valley.

"We have a small 5-acre fire in the Frog Pond Basin," Leona Rodreick from the Beaverhead-Deerlodge National Forest said. "We are calling it the Whetstone Ridge Fire, and it's located about 25 miles southwest of Philipsburg. We've got 11 firefighters on scene currently, we've ordered up a couple more hand crews to come up and give them a hand, and we've got a large helicopter doing water drops."

Investigators believe that lightning started the fire, which is burning on a ridge far away from structures at the moment.

"There are several cabins within and near the Frog Pond Basin area," Rodreick said. "The closest one to the fire is one mile. I would say, and this is just me with an estimate, within a day or two days they should have a line around it."

She says fire crews are hopeful that moisture from the weather system expected to move through western Montana today and tomorrow will help dampen the blaze.