Two wildfires in western Colorado have burned more than 5,800 acres and continue to prompt mandatory evacuations, fire officials said Sunday morning.

Visitors and staff at two national parks in the U.S. West have been evacuated because of wildfires.

The combination of high temperatures, gusty winds, and dry vegetation has created dangerous conditions, fuelling the fire's swift advance, park officials said.

The Dragon Bravo Fire in the North Rim of the Grand Canyon "exhibited extreme and volatile fire behavior" overnight and expanded to about 5,000 acres, fire managers said Sunday.

Two wildfires burning near the Grand Canyon have scorched more than 45,000 acres of tinder dry brush and vegetation and prompted evacuation orders for the Kaibab National Forest and north to the Utah ...

A wildfire that was burning more than 19,000 acres on Saturday forced the National Park Service to close an access point to the Grand Canyon National Park during the busy summer tourist season, offic...