More than 10,000 firefighters battle wildfires in 12 states . Acreage burned this year is three times the 10-year average , U.S. agency says . The speed of the fire forced evacuations of whole subdivisions throughout the area . The fires are being fueled by dry conditions and high winds that have fanned flames across much of California. Arizona 's Wallow fire has burned 527,774 acres .
More than 10,000 firefighters battle wildfires in 12 states . Acreage burned this year is three times the 10-year average , U.S. agency says . The fires are being fueled by dry conditions and high winds that have fanned flames across much of California. Arizona 's Wallow fire has burned 527,774 acres .