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URGENT - WEATHER MESSAGE

National Weather Service Flagstaff AZ

924 PM MST Thu Jul 9 2026



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Grand Canyon Country-

Including the cities of Supai, Grand Canyon Village, Tusayan, and

Grand Canyon North Rim

924 PM MST Thu Jul 9 2026



...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST SUNDAY BELOW

4000 FEET...



* WHAT...Dangerously hot conditions below 4000 feet, with daytime

  temperatures ranging from 100 degrees at Havasupai Gardens, to 113

  degrees at Phantom Ranch.



* WHERE...Lower elevations of the Grand Canyon.



* WHEN...Until 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.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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.



&&



$$



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Marble and Glen Canyons-

Including the cities of Lees Ferry and Page

924 PM MST Thu Jul 9 2026 /1024 PM MDT Thu Jul 9 2026/



...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 11 AM MST /NOON MDT/

SATURDAY TO 8 PM MST /9 PM MDT/ SUNDAY...



* WHAT...Dangerously hot conditions, with temperatures of 105 to 110

  degrees expected.



* WHERE...Marble and Glen Canyons, including Page and Lake Powell.



* WHEN...From 11 AM MST /noon MDT/ Saturday 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.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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.



&&



$$



Humphreys