Weather Alerts-

Execute a pre-planned activity identified in the instructions

Flagstaff - AZ, US, National Weather Service

Lower elevations of the Grand Canyon, and Yavapai County Valleys and Basins

...EXTREME HEAT WARNING IN EFFECT FROM 11 AM WEDNESDAY TO 8 PM MST SUNDAY BELOW 4000 FEET... WHAT...Dangerously hot conditions, with temperatures 96 to 104 expected below 4000 feet. These are temperatures that would be more typical of Summer. WHERE...Lower elevations of the Grand Canyon, and Yavapai County Valleys and Basins. WHEN...From 11 AM Wednesday to 8 PM MST Sunday. IMPACTS...Pets, livestock, and those sensitive to heat, such as the homeless, elderly, and children will be at risk for heat-related illnesses. Those without effective cooling and/or adequate hydration will be at the greatest risk. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. 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.