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 . Grimes County Sheriff Don Sowell said officials have identified a person of interest who is believed to have built the barbecue pit that started the fire , but authorities do not believe there was any intent of arson . 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 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 .