862
WWUS75 KFGZ 241840
NPWFGZ

URGENT - WEATHER MESSAGE
National Weather Service Flagstaff AZ
1140 AM MST Fri Jul 24 2026

AZZ005-270300-
/O.CON.KFGZ.XH.W.0006.000000T0000Z-260727T0300Z/
Marble and Glen Canyons-
Including the cities of Page and Lees Ferry
1140 AM MST Fri Jul 24 2026 /1240 PM MDT Fri Jul 24 2026/

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST /9 PM MDT/
SUNDAY...

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

* WHERE...Marble and Glen Canyons.

* WHEN...Until 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.

&&

$$

AZZ006-270300-
/O.CON.KFGZ.XH.W.0006.000000T0000Z-260727T0300Z/
Grand Canyon Country-
Including the cities of Tusayan, Supai, Grand Canyon North Rim, and
Grand Canyon Village
1140 AM MST Fri Jul 24 2026

...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST SUNDAY BELOW
4000 FEET...

* WHAT...Dangerously hot conditions expected below 4000 feet, with
  daytime temperatures around 105 degrees at Havasupai Gardens, and
  112 to 114 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.

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.

&&

$$

Konieczny