Extreme Heat Warning 06/15/2025 11:06 for Arizona areas

Headline: 
Extreme Heat Warning issued June 15 at 11:06AM MST until June 16 at 7:00PM MST by NWS Flagstaff AZ
Event: 
Extreme Heat Warning
Urgency: 
Expected
Effective: 
June 15, 2025 - 11:06am
Expires: 
June 15, 2025 - 7:15pm
Description: 
* WHAT...Dangerously hot conditions below 4000 feet, with daytime temperatures ranging from 102 degrees at Havasupai Gardens, to 110 degrees at Phantom Ranch. * WHERE...Lower Elevations of the Grand Canyon. * WHEN...Until 7 PM MST Monday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure.
Instruction: 
This 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.
Area Description: 
Grand Canyon Country
Forcast Office: 
NWS Flagstaff AZ