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.

One of the largest wildfires ever recorded in Colorado persisted Sunday and a new wildfire sparked in the southwestern corner of the state as gusty winds and low humidity fueled the flames.

Several fires are burning across western Colorado, with some at historic sizes and other causing evacuations of Western Slope towns.