PHOTOS: Wildfire in a scenic northern Arizona

The Slide Fire burns near 89 A south of Flagstaff, Wednesday, May 21, 2014. Evacuations of surrounding areas took place late afternoon Tuesday. (AP Photo/The Arizona Republic, Tom Tingle) ( APTOPIX Arizona Wildfires )

A tree burns out at the Slide Fire in Sterling Canyon at the Oak Creek Overlook above Sedona, Ariz., on Thursday, May 22, 2014. Hundreds of firefighters worked Thursday to protect communities on the edge of Flagstaff from a wildfire that is chewing up a scenic Arizona canyon with towering flames and burning entire trees down to nothing but ash. (AP Photo/The Arizona Republic, Michael Schennum) ( Arizona Wildfires )

Smoke rises from the Slide Fire as it burns up Oak Creek Canyon on Thursday, May 22, 2014, in Sedona, Ariz. The fire has burned approximately 4,800 acres. (AP Photo/Ross D. Franklin) ( APTOPIX Arizona Wildfires )

Black Timber Engine 52 firefighters work to contain the Slide Fire north of Oak Creek Overlook in Flagstaff, Ariz., Thursday, May 22, 2014. (AP Photo/The Arizona Republic, Michael Schennum) ( Arizona Wildfires )

Helicopters drop water on part of the Slide Fire in Sterling Canyon at the Oak Creek Overlook above Sedona, Ariz. on Thursday, May 22, 2014. Hundreds of firefighters worked Thursday to protect communities on the edge of Flagstaff from a wildfire that is chewing up a scenic Arizona canyon with towering flames and burning entire trees down to nothing but ash. (AP Photo/The Arizona Republic, Michael Schennum) ( Arizona Wildfires )

The Slide Fire burns up Oak Creek Canyon on Thursday, May 22, 2014, in Sedona, Ariz. The fire has burned approximately 4,800 acres. (AP Photo/Ross D. Franklin) ( Arizona Wildfires )

A firefighting helicopter drops water on a forest fire in Oak Creak Canyon in Sedona, Ariz., on Thursday May 22, 2014. The human-caused Slide Fire started Tuesday and had burned 7 1/2 square miles in and around Oak Creek Canyon, a scenic recreation area along a highway between Sedona and Flagstaff that normally would be teeming with tourists as the Memorial Day weekend approaches. (AP Photo/ Vyto Starinskas) ( Arizona Wildfires )

A firefighting helicopter drops water on a forest fire in Oak Creak Canyon in Sedona, Az., on Thursday May 22, 2014. The human-caused Slide Fire started Tuesday. (AP Photo/Vyto Starinskas) ( Arizona Wildfires )

The Slide Fire burns nearby Oak Creek Canyon on Thursday, May 22, 2014, in Sedona, Ariz. The fire has burned approximately 4,800 acres. (AP Photo/Ross D. Franklin) ( Arizona Wildfires )

John Rheinbolt, of the Western Defense Systems private contractor, works on pulling pine needles and other ground clutter away from a home as the Slide Fire burns nearby on Thursday, May 22, 2014, in Kachina Village, Ariz. The fire, which has burned approximately 4,800 acres, is 3 to 3 1/2 miles away from the residential areas of Forest Highlands and Kachina Village, where the 3,200 residents remain under pre-evacuation warnings. (AP Photo/Ross D. Franklin) ( Arizona Wildfires )

A helicopter fighting the Slide Fire leaves the scene for a refill as the fire burns up Oak Creek Canyon on Thursday, May 22, 2014, in Sedona, Ariz. The fire has burned approximately 4,800 acres. (AP Photo/Ross D. Franklin) ( Arizona Wildfires )

Tourists watch the Slide Fire from a scenic overlook as it burns up Oak Creek Canyon nearby on Thursday, May 22, 2014, in Sedona, Ariz. The fire has burned approximately 4,800 acres. (AP Photo/Ross D. Franklin) ( APTOPIX Arizona Wildfires )

Helicopters drop water on part of the Slide Fire in Sterling Canyon at the Oak Creek Overlook above Sedona, Ariz. on Thursday, May 22, 2014. Hundreds of firefighters worked Thursday to protect communities on the edge of Flagstaff from a wildfire that is chewing up a scenic Arizona canyon with towering flames and burning entire trees down to nothing but ash. (AP Photo/The Arizona Republic, Michael Schennum) ( Arizona Wildfires )

A Sante Fe Hot Shot works as a lookout as he oversees part of the Slide Fire in Sterling Canyon at the Oak Creek Overlook above Sedona, Ariz., on Thursday, May 22, 2014. Hundreds of firefighters worked Thursday to protect communities on the edge of Flagstaff from a wildfire that is chewing up a scenic Arizona canyon with towering flames and burning entire trees down to nothing but ash. (AP Photo/The Arizona Republic, Michael Schennum) ( Arizona Wildfires )

Smoke from the Slide Fire fills the sky as it burns up Oak Creek Canyon on Thursday, May 22, 2014, in Sedona, Ariz. The fire has burned approximately 4,800 acres. (AP Photo/Ross D. Franklin) ( Arizona Wildfires )

A firefighting helicopter drops water on a forest fire in Oak Creak Canyon in Sedona, Az., on Thursday May 22, 2014. The human-caused Slide Fire started Tuesday and had burned 7 1/2 square miles in and around Oak Creek Canyon, a scenic recreation area along a highway between Sedona and Flagstaff that normally would be teeming with tourists as the Memorial Day weekend approaches. (AP Photo/ Vyto Starinskas) ( Arizona Wildfires )

U.S. Forest Service firefighting crews work hotspots Thursday May 22, 2014 near Sedona, Ariz .The human-caused Slide Fire started Tuesday. (AP Photo/ Vyto Starinskas) ( Arizona Wildfires )

The Prescott Hotshots leave to battle the Slide Fire in Flagstaff, Ariz., on Thursday, May 22, 2014. Hundreds of firefighters worked Thursday to protect communities on the edge of Flagstaff from a wildfire that is chewing up a scenic Arizona canyon with towering flames and burning entire trees down to nothing but ash. (AP Photo/The Arizona Republic, Michael Schennum) ( Arizona Wildfires )

A firefighting helicopter drops water on a forest fire in Oak Creak Canyon in Sedona, Az., on Thursday May 22, 2014. The human-caused Slide Fire started Tuesday and had burned 7 1/2 square miles in and around Oak Creek Canyon, a scenic recreation area along a highway between Sedona and Flagstaff that normally would be teeming with tourists as the Memorial Day weekend approaches. (AP Photo/Vyto Starinskas) ( Arizona Wildfires )

In this Wednesday, May 21, 2014 photo, fires continue to burn in Oak Creek Canyon in Sedona, Ariz., as fire crews battle the forest fire and homes are evacuated in the tourist community. The blaze burning in a canyon between Sedona and Flagstaff dramatically increased in size Wednesday, authorities warned about 3,200 residents in two communities between Sedona and Flagstaff that they need to be ready to evacuate if the fire makes another advance. (AP Photo/Vyto Starinskas) ( Arizona Wildfires )

U.S. Forest Service firefighting crews work hotspots Thursday May 22, 2014 near Sedona, Ariz.The human-caused Slide Fire started Tuesday. (AP Photo/Vyto Starinskas) ( Arizona Wildfires )