Fueled by hot and dry weather, wildfires threatened homes in California and other Western states as crews struggled to corral flames that have scorched miles of brush and timber.
About 140 homes and ranches were considered at risk in California, where a 1,400-acre fire was tearing through coastal canyons west of Santa Barbara, scorching an area that hadn't burned in 60 years.
The chaparral was "very dry, very dead-on-the-ground fuel for the fire,'' said Gina DePinto, communications manager for Santa Barbara County.
About 800 firefighters struggled to reach the narrow, brush-choked coastal canyons to attack the flames. A fleet of aircraft had better luck Thursday but nightfall brought a rise in gusty, erratic "sundowner'' winds that had pushed the blaze Wednesday night.
For a second night, a freeway, U.S. 101, was closed in the area.
Hundreds of people were forced from campgrounds after the fire erupted Wednesday.
Charlie and Elizabeth Hatten spent the night at a shelter after a park ranger woke them as they camped at El Capitan State Beach.
"The flames looked so close. You couldn't see the moon anymore,'' Charlie Hatten told the Los Angeles Times.
The campgrounds remained closed but fire officials said nobody remained at the shelters Thursday.
In central New Mexico, a blaze that forced evacuations and burned several buildings had blackened 25 square miles by Thursday night and blanketed the state's largest city in a thick haze.
The fire was expected to continue moving east and northeast and posed an imminent threat to the small community of Chilili, the Tajique area, and the Ponderosa Pine residential area, according to U.S. Forest Service officials.
Extremely hot and dry weather was forecast to continue into the weekend, although gusty winds should ease, fire officials said.
In east-central Arizona, progress was made against a 12-square-mile blaze that broke out Wednesday south of Show Low.
"The winds weren't as bad, and the back-burns did exactly what we wanted them to do,'' Navajo County Sheriff KC Clark said at a Thursday afternoon news conference.
However, a small community in Navajo County remained evacuated and thousands of other residents were told to be prepared in case they had to leave.
In Nevada, a 300-acre Reno brush fire that threatened dozens of homes was 75 percent contained and crews were mostly in mop-up mode Thursday evening.
Blazes also threatened homes in Utah, where a firefighter hurt his head in a fall.