RIO BLANCO COUNTY, Colo. — The Lee Fire in Rio Blanco County has grown to the sixth largest in Colorado history, according to the Colorado Division of Fire Prevention and Control. The fire was mapped with infrared technology at more than 106,000 acres as of Sunday.

One of the fires burning now more than 100,000 acres in Rio Blanco County in northwest Colorado continues to grow during ongoing "near-critical fire weather" conditions.

A Colorado prison was evacuated as one of the largest wildfires in state history continued to grow, and officials warned residents of remote areas to be ready to leave Sunday as gusty winds and low humidity fed the flames.