Wildfires at U.S. national parks are prompting evacuations and causing major disruptions as the effects of climate change are impacting the tourism season.

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.