473
WWUS75 KFGZ 071900
NPWFGZ
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
1200 PM MST MON JUL 7 2025
AZZ006-082200-
/O.CON.KFGZ.XH.W.0003.000000T0000Z-250711T0300Z/
GRAND CANYON COUNTRY-
INCLUDING THE CITIES OF GRAND CANYON VILLAGE, SUPAI, AND NORTH
RIM
1200 PM MST MON JUL 7 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST THURSDAY
BELOW 4000 FEET...
* WHAT...DANGEROUSLY HOT CONDITIONS BELOW 4000 FEET, WITH DAYTIME
TEMPERATURES RANGING FROM 105 DEGREES AT HAVASUPAI GARDENS, TO 116
DEGREES AT PHANTOM RANCH.
* WHERE...LOWER ELEVATIONS OF THE GRAND CANYON.
* WHEN...UNTIL 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.
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.
AZZ018-037-082200-
/O.CON.KFGZ.XH.W.0003.250709T1700Z-250710T0300Z/
NORTHERN GILA COUNTY-YAVAPAI COUNTY VALLEYS AND BASINS-
INCLUDING THE CITIES OF PAYSON, STRAWBERRY, COTTONWOOD, CORDES
JUNCTION, BAGDAD, YOUNG, AND CAMP VERDE
1200 PM MST MON JUL 7 2025
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM MST
WEDNESDAY BELOW 4000 FEET...
* WHAT...DANGEROUSLY HOT CONDITIONS, WITH TEMPERATURES UP TO 112
EXPECTED BELOW 4000 FEET.
* WHERE...LOWER ELEVATIONS OF NORTHERN GILA AND YAVAPAI COUNTIES.
* WHEN...FROM 10 AM TO 8 PM MST WEDNESDAY.
* 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 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. 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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