A new fire in Rio Blanco County near its border with Routt County is burning 300 acres near Crosho Lake and has prompted campground evacuations and pre-evacuation orders for nearby homes.

In western Colorado, firefighters are up against windy, hot weather as they try to protect homes and infrastructure from a pair of lightning-caused wildfires.

Two wildfires caused by lightning strikes were burning out of control in northwest Colorado on Sunday, forcing evacuations that included nearly 200 inmates at a nearby prison. NBC News’ Dana Griffin has more.

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.

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.

The Lee Fire near Meeker, now the fifth largest fire in Colorado's history, is just one four major fires in western Colorado threatening homes and other structures as firefighters struggle to get containment.