WWUS75 KFGZ 210035

NPWFGZ



URGENT - WEATHER MESSAGE

National Weather Service Flagstaff AZ

535 PM MST Fri Mar 20 2026



AZZ006-220000-

/O.CON.KFGZ.XH.W.0001.000000T0000Z-260323T0300Z/

Grand Canyon Country-

Including the cities of Supai, Grand Canyon Village, and North Rim

535 PM MST Fri Mar 20 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 92 degrees at Havasupai Gardens, to 98

  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.



&&



$$



AZZ037-220000-

/O.CON.KFGZ.XH.W.0001.000000T0000Z-260323T0300Z/

Yavapai County Valleys and Basins-

Including the cities of Bagdad, Cordes Junction, Cottonwood, and Camp

Verde

535 PM MST Fri Mar 20 2026



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

4000 FEET...



* WHAT...Dangerously hot conditions, with temperatures up to 100

  below 4000 feet.



* WHERE...Lower elevations of Yavapai County.



* WHEN...Until 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...



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.



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.



Stay cool, stay hydrated, stay informed.



&&



$$



Humphreys