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 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.

RIO BLANCO COUNTY, Colo. — The Rio Blanco County Sheriff's Office has issued a mandatory evacuation due to the Lee Fire. Zone 63 on the south side of the fire is now under a "GO" status, meaning residents should evacuate immediately. As of Wednesday afternoon, areas south and west of Meeker are also under evacuation orders due to the Lee Fire.