593
WWUS75 KVEF 120822
NPWVEF
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
122 AM PDT TUE AUG 12 2025
AZZ002-003-CAZ522-523-525>527-NVZ017-121700-
/O.CON.KVEF.XH.W.0008.000000T0000Z-250813T0300Z/
LAKE HAVASU AND FORT MOHAVE-NORTHWEST DESERTS-DEATH VALLEY
NATIONAL PARK-WESTERN MOJAVE DESERT-MORONGO BASIN-CADIZ BASIN-SAN
BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY-WESTERN CLARK AND
SOUTHERN NYE COUNTY-
INCLUDING THE CITIES OF DOLAN SPRINGS, YUCCA, AMARGOSA VALLEY,
SHOSHONE, BARSTOW, STOVEPIPE WELLS, FURNACE CREEK, NEEDLES,
GOLDEN VALLEY, MORONGO VALLEY, WIKIEUP, TOPOCK, PAHRUMP, YUCCA
VALLEY, DAGGETT, LAKE HAVASU CITY, INDIAN SPRINGS, VIDAL
JUNCTION, FORT IRWIN, KINGMAN, DESERT ROCK, TWENTYNINE PALMS,
VALENTINE, AND DESERT HILLS
122 AM PDT TUE AUG 12 2025 /122 AM MST TUE AUG 12 2025/
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT / MST THIS
EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HIGH TEMPERATURES BETWEEN
103 AND 106 IN KINGMAN, GOLDEN VALLEY, AND DOLAN SPRINGS; BETWEEN
108 AND 112 IN BARSTOW-DAGGETT, TWENTYNINE PALMS, AND YUCCA
VALLEY; BETWEEN 112 AND 116 IN LAKE HAVASU CITY, NEEDLES, AND FORT
MOHAVE; BETWEEN 118 AND 122 AT FURNACE CREEK IN DEATH VALLEY
NATIONAL PARK. MAJOR HEAT RISK EXPECTED WITH HEAT-RELATED IMPACTS
POSSIBLE TO MUCH OF THE POPULATION IS PRECAUTIONS ARE NOT TAKEN.
* WHERE...IN ARIZONA, LAKE HAVASU AND FORT MOHAVE AND NORTHWEST
DESERTS. IN CALIFORNIA, CADIZ BASIN, DEATH VALLEY NATIONAL PARK,
MORONGO BASIN, SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY,
AND WESTERN MOJAVE DESERT. IN NEVADA, WESTERN CLARK AND SOUTHERN
NYE COUNTY.
* WHEN...UNTIL 8 PM PDT / MST THIS EVENING.
* IMPACTS...HEAT-RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT EVENTS.
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.
TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL SAFETY AND
HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN
SHADED OR AIR-CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT
SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN
EMERGENCY! CALL 9 1 1.
MONITOR THE LATEST FORECASTS AND WARNINGS FOR UPDATES.
AZZ036-CAZ524-NVZ016-020>022-121700-
/O.CON.KVEF.XH.W.0008.250812T1700Z-250813T0300Z/
LAKE MEAD NATIONAL RECREATION AREA-EASTERN MOJAVE DESERT-
NORTHEAST CLARK COUNTY-LAS VEGAS VALLEY-LAKE MEAD NATIONAL
RECREATION AREA-SOUTHERN CLARK COUNTY-
INCLUDING THE CITIES OF MOHAVE VALLEY, BOULDER CITY, BAKER,
MOUNTAIN PASS, MOAPA, HOOVER DAM, MITCHELL CAVERNS, SEARCHLIGHT,
CAL-NEV-ARI, BULLHEAD CITY, LAS VEGAS, LAUGHLIN, NORTH LAS VEGAS,
HENDERSON, MESQUITE, OVERTON, PRIMM, AND OATMAN
122 AM PDT TUE AUG 12 2025 /122 AM MST TUE AUG 12 2025/
...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM PDT / MST THIS
MORNING TO 8 PM PDT / MST THIS EVENING...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HIGH TEMPERATURES BETWEEN
108 AND 114 IN LAS VEGAS, LAKE MEAD NATIONAL RECREATION AREA,
MESQUITE, PAHRUMP, AND BAKER.MAJOR HEAT RISK EXPECTED WITH
HEAT-RELATED IMPACTS POSSIBLE TO MUCH OF THE POPULATION IS
PRECAUTIONS ARE NOT TAKEN.
* WHERE...LAKE MEAD NATIONAL RECREATION AREA, EASTERN MOJAVE DESERT,
NORTHEAST CLARK COUNTY, LAS VEGAS VALLEY, AND SOUTHERN CLARK
COUNTY.
* WHEN...FROM 10 AM PDT / MST THIS MORNING TO 8 PM PDT / MST THIS
EVENING.
* IMPACTS...HEAT-RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT EVENTS.
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.
TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL SAFETY AND
HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN
SHADED OR AIR-CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT
SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN
EMERGENCY! CALL 9 1 1.
MONITOR THE LATEST FORECASTS AND WARNINGS FOR UPDATES.
AZZ001-CAZ520-NVZ014-015-018-019-121700-
/O.CON.KVEF.HT.Y.0002.250812T1700Z-250813T0300Z/
NORTHWEST PLATEAU-OWENS VALLEY-ESMERALDA AND CENTRAL NYE COUNTY-
LINCOLN COUNTY-SHEEP RANGE-SPRING MOUNTAINS-RED ROCK CANYON-
INCLUDING THE CITIES OF MT CHARLESTON, PANACA, SILVER PEAK,
ALAMO, RACHEL, TUWEEP, RED ROCK CANYON, PIOCHE, BEATTY, BISHOP,
WESTERN GRAND CANYON, HAYFORD PK, COLORADO CITY, HIKO, PIPE
SPRING NATIONAL MONUMENT, INDEPENDENCE, OLANCHA, MT TRUMBULL,
CALIENTE, GOLDFIELD, LONE PINE, AND DYER
122 AM PDT TUE AUG 12 2025 /122 AM MST TUE AUG 12 2025/
...HEAT ADVISORY REMAINS IN EFFECT FROM 10 AM PDT / MST THIS MORNING
TO 8 PM PDT / MST THIS EVENING...
* WHAT...HOT CONDITIONS WITH HIGH TEMPERATURES BETWEEN BETWEEN 82
AND 88 IN MT. CHARLESTON, KYLE CANYON, AND LEE CANYON; BETWEEN 96
AND 102 IN CALIENTE, GOLDFIELD, DYER, AND COLORADO CITY; BETWEEN
102 AND 106 IN BISHOP, INDEPENDENCE, OLANCHA, HIKO, AND RED ROCK
CANYON. MODERATE-TO-MAJOR HEAT RISK.
* WHERE...IN ARIZONA, NORTHWEST PLATEAU. IN CALIFORNIA, OWENS
VALLEY. IN NEVADA, ESMERALDA AND CENTRAL NYE COUNTY, LINCOLN
COUNTY, SHEEP RANGE, AND SPRING MOUNTAINS-RED ROCK CANYON.
* WHEN...FROM 10 AM PDT / MST THIS MORNING TO 8 PM PDT / MST THIS
EVENING.
* IMPACTS...HOT TEMPERATURES MAY CAUSE HEAT-RELATED ILLNESSES.
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.
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.
TO REDUCE RISK DURING OUTDOOR WORK, THE OCCUPATIONAL SAFETY AND
HEALTH ADMINISTRATION RECOMMENDS SCHEDULING FREQUENT REST BREAKS IN
SHADED OR AIR-CONDITIONED ENVIRONMENTS. ANYONE OVERCOME BY HEAT
SHOULD BE MOVED TO A COOL AND SHADED LOCATION. HEAT STROKE IS AN
EMERGENCY! CALL 9 1 1.
MONITOR THE LATEST FORECASTS AND WARNINGS FOR UPDATES.
FOR MORE INFORMATION FROM THE NATIONAL WEATHER SERVICE VISIT
HTTP://WEATHER.GOV/LASVEGAS
JCS
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