36°54'N / 111°27'O / Altitude 1326 m / 21:27 27/07/2026, America/Denver (UTC-6)
depuis : 27/07/2026, 12:54
à: 30/07/2026, 11:00
* WHAT...Dangerously hot conditions, with temperatures around 104 to 108 expected. * WHERE...Marble and Glen Canyons and Oak Creek and Sycamore Canyons. * WHEN...From 10 AM MST /11 AM MDT/ Friday to 8 PM MST /9 PM MDT/ Sunday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure.
Coconino,Marble and Glen Canyons
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Do not leave young children and pets in unattended vehicles. Car
interiors will reach lethal temperatures in a matter of minutes.
Take action when you see symptoms of heat exhaustion and heat stroke.
Anyone overcome by heat should be moved to a cool and shaded
location. Heat stroke is an emergency! Call 9 1 1.
Stay cool, stay hydrated, stay informed.
NWS Flagstaff AZ
27/07/2026, 12:54depuis : 30/07/2026, 11:00
à: 30/07/2026, 11:00
* WHAT...Dangerously hot conditions expected below 4000 feet, with daytime temperatures ranging around 100 degrees at Havasupai Gardens, and 112 to 116 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...From 10 AM Thursday to 8 PM MST Sunday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure.
CoconinoThis warning is reserved for only the hottest days of the year and is
issued when temperatures are expected to rise to dangerous levels.
Day hikers on Bright Angel Trail should descend no farther than 1 1/2
miles from the upper trailhead. Between the hours of 10 AM and 4 PM,
hikers should be out of the canyon or at Havasupai Gardens or Bright
Angel campgrounds, physical activity is discouraged. All hikers
should have adequate gear, including a wide-brimmed hat, sunscreen,
salty snacks, sufficient water, and electrolyte mix. Doubling your
calorie intake helps maintain your energy.
Hike smart.NWS Flagstaff AZ27/07/2026, 12:54