Mike Sumaruk, from Tulsa, Oklahoma, spent months preparing for his first Rim-to-Rim hike in Grand Canyon National Park, a coveted feat for the rare visitor interested in dipping below the canyon’s sur...

Like clockwork, clouds build up in the afternoon, the wind starts to swirl and the skies darken.

The national park remained open Tuesday but tourists who planned to stay overnight — many traveling long distances for reservations from a year or more ago — have had to scramble to find rooms elsewhe...