36°35'北緯 / 111°5'西経 / 高度 1807 m / 00:45 2026/06/21, America/Denver (UTC-6)
から: 2026/06/22, 11:00
に: 2026/06/22, 11:15
* WHAT...Dangerously hot conditions expected below 4000 feet, with daytime temperatures ranging from 101 degrees at Havasupai Gardens, to 112 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...From 10 AM Monday to 7 PM MST Tuesday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure.