INDIAN FALLS, Calif. -- Erratic winds and the potential for dry lightning added to the challenges facing firefighters battling California's largest wildfire, one of numerous blazes burning Monday across the West.
Over the weekend, the enormous Dixie Fire merged with the smaller Fly Fire and tore through the remote Northern California community of Indian Falls. The blaze leveled at least 16 houses and other structures, but a new damage estimate wasn't available because flames were still raging.
"Fire behavior has been so unpredictable, it hasn't been safe for inspectors to go in to work," said Mitch Matlow, a fire spokesman. "Until things settle down, we won't know the extent of what's burned."
Flames spread in remote areas with steep terrain that crews can't easily reach, Matlow said. Gusty winds also hindered containment efforts and the problem could get worse with the predicted arrival of pyrocumulus clouds -- literally meaning "fire clouds " -- which can bring lightning and the risk of new ignitions.
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Fire officials said the blaze had charred nearly 309 square miles of timber and brush in Plumas and Butte counties, about two hours northeast of Sacramento. It was 22% contained and more than 10,000 homes were still under threat.
Authorities were hopeful that improving weather will help them continue making progress against the nation's largest wildfire, the Bootleg Fire in southern Oregon.
It was 53% contained after scorching 640 square miles of remote land. On Monday, an additional crew of Oregon National Guardsmen was sent to help out the more than 2,200 people battling the blaze.
The lightning-caused fire has burned at least 70 homes and some 2,000 residences were under evacuation orders.
In Montana, four firefighters were released from the hospital and a fifth was being treated at a burn center Monday after a wildfire overran them last week, authorities said. The five were building a defensive line at the Devil's Creek Fire in Garfield County when winds shifted suddenly and blew flames back at them.
The firefighter still being treated -- a U.S. Fish and Wildlife Service employee -- "is making good progress and is in good spirits," spokesperson Kari Cobb said.
Crews were trying to keep the 10-square-mile fire from reaching Fort Peck Reservoir along the Missouri River in central Montana. It's one of three major fires in the state.
Firefighters have frequently dealt with perilous fire behavior, with flames consuming huge areas of vegetation each day. Such conditions are often from a combination of unusual random, short-term and natural weather patterns heightened by long-term, human-caused climate change. Global warming has made the West much warmer and drier in the past 30 years.
Across the West this summer, firefighters have confronted an unusually large number of unpredictable early season fires, U.S. Forest Service Chief Randy Moore said.
More than 85 large wildfires were burning across the country, most of them in Western states.
