This aerial photo shows the destructive path of the Waldo Canyon fire in the Mountain Shadows subdivision area of Colorado Springs, Colo., Thursday, June 28, 2012. Colorado Springs officials said Thursday that hundreds of homes have been destroyed by the raging wildfire. (AP Photo/Denver Post, RJ Sangosti)

This aerial photo shows the destructive path of the Waldo Canyon fire in the Mountain Shadows subdivision area of Colorado Springs, Colo., Thursday, June 28, 2012. Colorado Springs officials said Thursday that hundreds of homes have been destroyed by the raging wildfire. (AP Photo/Denver Post, RJ Sangosti)

This image provided by NASA taken by an Expedition 31 crew member Wednesday June 27, 2012 aboard the International Space Station, flying approximately 240 miles above Earth, recorded a series of images of the current wild fires in the southwestern United States. These particular fires, of unknown cause, are burning at the south end of the Wyoming Range in southwestern Wyoming, and have affected 17,000 acres. The fires have produced two major smoke plumes (center) that dominate the image. The fires are occurring 120 miles due south of Yellowstone Lake which appears as an irregular blue shape (upper right --if the image is oriented with north toward the top right corner). Utah's Great Salt Lake (image far left) is about 120 miles away. Winds transport the smoke in a northeasterly direction: the plumes can be seen to cross the Wind River Range (center), blowing directly toward the Big Horn Mts., which appear as a dark, curved feature (lower right). This 180mm image spans a wide area from northern Utah (left) to northeastern Montana (right). (AP Photo/NASA)

In this aerial photo, homes untouched by the Waldo Canyon fire stand next to the charred lots where neighboring homes were burned to the ground in the Mountain Shadows subdivision area of Colorado Springs, Colo., Thursday, June 28, 2012. Colorado Springs officials said Thursday that hundreds of homes have been destroyed by the raging wildfire. (AP Photo/Denver Post, RJ Sangosti)

This aerial photo shows the destructive path of the Waldo Canyon fire in the Mountain Shadows subdivision area of Colorado Springs, Colo., Thursday, June 28, 2012. Colorado Springs officials said Thursday that hundreds of homes have been destroyed by the raging wildfire. (AP Photo/Denver Post, RJ Sangosti)

This aerial photo shows the destructive path of the Waldo Canyon fire in the Mountain Shadows subdivision area of Colorado Springs, Colo., Thursday, June 28, 2012. Colorado Springs officials said Thursday that hundreds of homes have been destroyed by the raging wildfire. (AP Photo/Denver Post, RJ Sangosti)

This aerial photo shows the destructive path of the Waldo Canyon fire in the Mountain Shadows subdivision area of Colorado Springs, Colo., Thursday, June 28, 2012. Colorado Springs officials said Thursday that hundreds of homes have been destroyed by the raging wildfire. (AP Photo/Denver Post, RJ Sangosti)

This aerial photo shows the destructive path of the Waldo Canyon fire in the Mountain Shadows subdivision area of Colorado Springs, Colo., Thursday, June 28, 2012. Colorado Springs officials said Thursday that hundreds of homes have been destroyed by the raging wildfire. (AP Photo/Denver Post, RJ Sangosti)

A C-130 from Peterson Air Force Base flies past Pikes Peak Thursday, June 28, 2012 during a flight over the Waldo Canyon Fire burning west of Colorado Springs, Colo. Colorado Springs officials said Thursday that hundreds of homes have been destroyed by a raging wildfire that has encroached on the state's second-largest city and threatened the U.S. Air Force Academy. (AP Photo/The Colorado Springs Gazette, Mark Reis)

A helicopters flies over as the Waldo Canyon Fire continues to burn Wednesday, June 27, 2012, in Colorado Springs, Colo. The wildfire doubled in size overnight to about 24 square miles (62 square kilometers), and has so far forced mandatory evacuations for more than 32,000 residents. (AP Photo/Bryan Oller)

An unidentifed woman looks on as smoke envelopes ridges as a wildfire rolls through housing subdivisions in the mountains north and west of Colorado Springs, Colo., on Wednesday, June 27, 2012. The fire has forced the evacuation of more than 32,000 residents of the communities west of and now in Colorado Springs proper. (AP Photo/David Zalubowski)

Smoke rises from the ruins of a home while other homes in the development still stand after a wildfire rolled through housing subdivisions in the mountains north and west of Colorado Springs, Colo., on Wednesday, June 27, 2012. The fire has forced the evacuation of more than 32,000 residents of the communities west of and now in Colorado Springs proper. (AP Photo/David Zalubowski)

Light smoke is visible in Queen's Canyon as the sun sets on the fifth day of the Waldo Canyon Fire burning west of Colorado Springs, Colo. Wednesday, June 27, 2012. On Tuesday the fire jumped Queen's Canyon to begin it's run into Colorado Springs where it destroyed several homes. (AP Photo/The Colorado Springs Gazette,Mark Reis )

Smoke rises from a wildfire burning in Huntington Canyon near Stuart Guard Station at the Manti-La Sal National Forest in Utah, Wednesday, June 27, 2012. At least five wildfires burned across Utah on Wednesday, taxing resources as firefighters worked feverishly to gain control, with one in the central part of the state continuing to burn with little containment after destroying at least 56 structures, authorities said. (AP Photo/The Salt Lake Tribune, Paul Fraughton)

The sun is obscured by smoke from a wildfire burning in the Manti-La Sal National Forest in Utah, Wednesday, June 27, 2012. At least five wildfires burned across Utah on Wednesday, taxing resources as firefighters worked feverishly to gain control, with one in the central part of the state continuing to burn with little containment after destroying at least 56 structures, authorities said. (AP Photo/The Salt Lake Tribune, Paul Fraughton)

This aerial photo taken on Wednesday, June 27, 2012, shows burned homes in the Mountain Shadows residential area of Colorado Springs, Colo., that were destroyed by the Waldo Canyon wildfire. More than 30,000 have been displaced by the fire, including thousands who frantically packed up belongings Tuesday night after it barreled into neighborhoods in the foothills west and north of Colorado’s second-largest city. (AP Photo/John Wark)

A truck drives down state road 31 as smoke rises from a wildfire burning in the Manti-La Sal National Forest in Utah, Wednesday, June 27, 2012. At least five wildfires burned across Utah on Wednesday, taxing resources as firefighters worked feverishly to gain control, with one in the central part of the state continuing to burn with little containment after destroying at least 56 structures, authorities said. (AP Photo/The Salt Lake Tribune, Paul Fraughton)

The sun sets on the front range where the Waldo Canyon Fire continues to burn Wednesday, June 27, 2012, in Colorado Springs, Colo. The wildfire doubled in size overnight to about 24 square miles (62 square kilometers), and has so far forced mandatory evacuations for more than 32,000 residents. (AP Photo/Bryan Oller)

A slurry bomber drops fire retardant on the Waldo Canyon Fire Wednesday, June 27, 2012, in Colorado Springs, Colo. The wildfire doubled in size overnight to about 24 square miles (62 square kilometers), and has so far forced mandatory evacuations for more than 32,000 residents. (AP Photo/Bryan Oller)

Map shows spread of wildfire over last 24 hours and previous six days