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WHAT: Dangerously hot conditions below 4000 feet, with daytime temperatures ranging from 105 degrees at Havasupai Gardens to 115 degrees at Phantom Ranch.
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WHERE: Lower Elevations of the Grand Canyon.
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WHEN: Until 8 PM MST Friday.
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IMPACTS: Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure. Hiking in the lower elevations of the Grand Canyon will be dangerous and is not recommended.
* WHAT...Dangerously hot conditions below 4000 feet, with daytime temperatures ranging from 105 degrees at Havasupai Gardens to 115 degrees at Phantom Ranch. * WHERE...Lower Elevations of the Grand Canyon. * WHEN...Until 8 PM MST Friday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure. Hiking in the lower elevations of the Grand Canyon will be dangerous and is not recommended.
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. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. 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.
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