Progress was being made on the nation’s largest fire, the Bootleg Fire in Oregon, but less than half had been contained, fire officials said.
The growth of the fire had slowed, but thousands of homes remained threatened on its eastern side, authorities said.
In California, Gov. Gavin Newsom proclaimed a state of emergency for four northern counties on Friday due to wildfires that he said were causing “conditions of extreme danger to the safety of people and property.”
The proclamation opens the way for greater state support.
On Saturday, fire crews from California and Utah would arrive in Montana, Governor Greg Gianforte announced. Five firefighters were injured Thursday when swirling winds returned flames as they worked on the Devil’s Creek fire that was burning in rugged and steep terrain near the rural city of Jordan.
They remained hospitalized on Friday, but Land Management Office spokesman Mark Jacobsen declined to reveal the extent of their injuries.
The firefighters included three crew members from the U.S. Fish and Wildlife Service from North Dakota and two U.S. Forest Service firefighters from New Mexico.
In California, the Tamarack Fire, south of Lake Tahoe, continued to burn wood and chaparral and threatened communities on both sides of the California-Nevada state line.
The fire, started by lightning on July 4 in Alpine County, has destroyed at least 10 buildings.
Mandatory evacuation orders were issued Friday in Butte County, California, as the Dixie fire continued to grow explosively eastward, becoming the state’s largest wildfire so far this year.
In north-central Washington, firefighters battled several fires in Okanogan County that threatened hundreds of homes.
And in northern Idaho, east of Spokane, Washington, a small fire near Silverwood theme park prompted evacuations Friday night in the surrounding area.
Although warm weather with afternoon winds posed a continuing threat of some flames spreading, weekend forecasts also indicated the possibility of scattered thunderstorms in California, Utah, Nevada, Arizona and other states. However, forecasters said some could be dry thunderstorms that produce little rain but lots of lightning, which can spark new flames.
More than 80 large wildfires were burning across the country, most of them in western states, and had burned about 1.4 million acres of land.