Coconino County, AZ
Alerts
Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.
In effect from Thursday 06/11 11:00 AM MDT – Thursday 06/11 9:00 PM MDT
Issued by NWS Flagstaff AZ
What
Dangerously hot conditions expected below 4000 feet, with daytime temperatures ranging from 101 degrees at Havasupai Gardens, to 110 degrees at Phantom Ranch.
Where
Lower elevations of the Grand Canyon.
When
From 10 AM to 8 PM MST Thursday.
Impacts
Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure.
What to Do
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.
Areas Impacted
- Grand Canyon Country
Tips to Stay Safe
An Extreme Heat Warning means that extremely dangerous heat conditions are happening now or soon. You must take precautions to protect yourself and others from extreme heat.
- Stay inside in air conditioning if possible. If you don’t have air conditioning, go to a library, mall, or local cooling center.
- Drink plenty of water to stay hydrated, and wear loose, light-colored clothing.
- Check on friends, family, and neighbors, especially those who do not have air conditioning or spend much of their time alone.
- Reschedule outdoor activities for a cooler day.
- If you must be outdoors, take longer and more frequent breaks in the shade or air conditioning, and avoid the hottest parts of the day.
- Bring pets indoors if possible. If pets are left outside, make sure they have shade and plenty of cool water.
- Make sure you know the signs of heat-related illness and how to respond.
Briefings
From the Forecaster
Today
Created by the NWS Flagstaff WFO
Look for warm and dry weather today with southwest to west winds at 10-20 mph.
Seven-day Weather Risk Overview
The graphic shows the daily risk summary for 7 days. Daily risk is based on highest risk factor for that day.
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