There's a chance of thunderstorms Saturday in the area that could bring much-needed moisture. But if such a storm doesn't produce any rain, its winds could fan the fire.
The size of the human-caused fire had reached 16 square miles by Saturday morning. It had grown nearly 5 square miles since the latest report on its size.
It's burning around Oak Creek Canyon, a scenic recreation area along the highway between Sedona and Flagstaff that would normally be filed with tourists as Memorial Day approaches. Slide Rock State Park, one of the most-visited tourist spots in Arizona, has been closed.
The goals for fire managers are to protect the 300 structures threatened in Oak Creek Canyon, keep the fire from pushing into the communities of Forest Highlands and Kachina Village to the east, and minimize the potential for flooding.
Perry said crews working Friday night also focused on building protection lines to handle a finger of fire that took off in west Oak Creek. There were no homes in the area, and crews have made solid progress in protecting that area, Perry said.
Crews cleared out brush and conducted burnout operations to protect a power line that supplies electricity to Flagstaff.
Evacuations remain in place for a 2-mile stretch north of Slide Rock. The fire was 3 to 3 ½ miles away from the residential areas of Forest Highlands and Kachina Village, where 3,200 residents remained under pre-evacuation warnings.
No homes have been destroyed. The fire is 5 percent contained.