708
WWUS75 KFGZ 100424
NPWFGZ
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
924 PM MST THU JUL 9 2026
AZZ006-112200-
/O.CON.KFGZ.XH.W.0005.000000T0000Z-260713T0300Z/
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.
AZZ005-112200-
/O.CON.KFGZ.XH.W.0005.260711T1800Z-260713T0300Z/
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
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