Grand Canyon, wildfire
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The White Sage Fire is nearly 20,000 acres, growing almost 40 times in size in over 48 hours as the nearby Dragon Bravo Fire grows to 5,000 acres.
The wildfire closed the North Rim's visitor center and forced the evacuations of anyone living nearby, as firefighters battled for containment.
Access via the North Rim, a lesser-used gateway to the national park, was closed as the White Sage fire continued to burn on Saturday.
A wildfire burning in Grand Canyon National Park triggered a chlorine gas leak Friday afternoon after flames reached a water treatment facility.
Officials evacuated Jacob Lake and the North Rim of the Grand Canyon was closed to visitors because of the fast-moving White Sage wildfire.
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The NPS recommends avoiding hiking the Grand Canyon's inner trails between 10 a.m. and 4 p.m., when temperatures are at their peak. Temperatures in the inner canyon can reach over 120 degrees Fahrenheit in the shade, creating "extremely hazardous conditions for hikers," the NPS said.