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 wildfire that started in northwest Colorado on Saturday afternoon has now burned around 4,000 acres. Evacuations and closures have been put in place near two of the fires burning to the south of Meeker.

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.