Rapid growth on the South Rim fire in Black Canyon of the Gunnison National Park forced immediate evacuations in Montrose County on Saturday afternoon.

A wildfire that's burning in the southern part of Black Canyon of the Gunnison National Park has grown to more than 1,600 acres.

Officials announced Saturday morning that the South Rim Fire has grown to 2,896 acres with 0% containment.Montrose County evacuated the community of Bostwick Park on Friday after activity increased on the western flank and southeast section of the fire edge.