Visitors to Grand Canyon National Park should prepare for intense heat early next week. Recent heat-related incidents, including the deaths of three hikers, have highlighted dangers. The National Weather Service forecasts temperatures potentially exceeding 110 degrees Fahrenheit (43 degrees Celsius) at Phantom Ranch from Monday to Tuesday. The National Park Service advises against hiking during midday.
An extreme heat watch was active on June 16 when two hikers, aged 67 and 68, were found dead on the North Kaibab Trail, the park’s most challenging inner canyon trail. Both appeared to suffer from heat-related illnesses. A third hiker, aged 72, died on June 12 on the South Kaibab Trail due to the heat.
About 90 miles south, visitors and residents of Oak Creek Canyon evacuated due to a wildfire burning hundreds of acres north of Sedona. Parts of the Western U.S., stretching from the Rockies to the Pacific Coast, experienced higher-than-average temperatures, with even more expected next week. Officials warned that prolonged dry, hot conditions raised fire risks.
Heat Risks for Grand Canyon Hikers
Park and weather officials emphasize that hiking conditions can be misleading. The rim of the Grand Canyon is often 20 to 25 degrees cooler than the bottom. Justin Johndrow, a meteorologist with the National Weather Service in Flagstaff, indicated this is the year’s hottest period before monsoon rains bring relief later in the summer.
Descending trails might appear manageable initially, with cooler temperatures, but hikers face steep climbs and higher temperatures on the return. These conditions can lead to unnoticed heat illness symptoms.
“That’s very strenuous even on a mild day,” Johndrow remarked about the hike back to the rim. “With temperatures of 105 to 110 degrees, it causes significant problems.”
Wildfire Threats Near Oak Creek Canyon
A team comprising federal and local agencies is addressing a wildfire affecting roughly 500 acres near Oak Creek Canyon. This area features steep and rugged terrain, which complicates efforts, explained Dick Fleishman, fire information officer with the Southwest Area Complex Incident Management Team.
The fire is concentrated in the Red Rock-Secret Mountain wilderness, about 7 miles north of Sedona, and has extended into the Coconino National Forest. Firefighters are working to contain the blaze, aiming to prevent its spread toward Oak Creek Canyon or Sedona and prepare for potential post-fire flooding. Steep slopes, nearby property risks, and heat from the fire add to the concerns.
“This fire increased in complexity rapidly,” Fleishman commented. “We aim to minimize its impact as much as possible.”
Approximately 30 miles of the adjacent highway closed. The Coconino National Forest also announced a formal closure of campgrounds, picnic sites, and trailheads.
“For June 20,” Fleishman observed, “it was unusually quiet when I traveled through the area.” Typically, Oak Creek Canyon draws millions of visitors annually.