More than 10,000 firefighters battle wildfires in 1,800 states . Acreage burned this year is three times the 10-year average , Texas agency says . A fast-moving U.S. wildfire forces the evacuation of 12 homes and businesses . Texas '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 . A fast-moving Texas wildfire forces the evacuation of 1,800 homes and businesses . Arizona 's Wallow fire has burned 527,774 acres .