A fire near the Grand Canyon National Park in Arizona has grown more than 20 times in size in 24 hours as an intensifying wildfire season sees the return of Canadian wildfire smoke into the U.S.

The fire was ignited by lightning strikes on Thursday, prompting officials to evacuate the North Rim of the Grand Canyon National Park, according to the National Park Service. On Friday, officials said in a post on X that roughly 500 visitors were evacuated from the area,

Strong winds and hot, dry weather continue to fuel two separate wildfires near the northwestern side of the Grand Canyon Saturday, closing the canyon’s North Rim and forcing evacuations throughout the area.