483
WWUS75 KVEF 040931
NPWVEF
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
231 AM PDT TUE AUG 4 2026
AZZ001-002-570-571-575-576-CAZ522>527-581-582-NVZ014>017-020-022-025-
026-050000-
/O.CON.KVEF.XH.W.0003.000000T0000Z-260809T0300Z/
NORTHWEST PLATEAU-LAKE HAVASU AND FORT MOHAVE-LAKE MEAD - AZ SIDE-
LAKE MOHAVE - AZ SIDE-HUALAPAI MOUNTAINS-NORTHWEST DESERTS-DEATH
VALLEY NATIONAL PARK-WESTERN MOJAVE DESERT-EASTERN MOJAVE DESERT-
MORONGO BASIN-CADIZ BASIN-SAN BERNARDINO COUNTY-UPPER COLORADO
RIVER VALLEY-OWENS VALLEY SOUTH-OWENS VALLEY NORTH-ESMERALDA AND
CENTRAL NYE COUNTY-LINCOLN COUNTY-NORTHEAST CLARK COUNTY-WESTERN
CLARK AND SOUTHERN NYE COUNTY-LAS VEGAS VALLEY-SOUTHERN CLARK
COUNTY-LAKE MEAD - NV SIDE-LAKE MOHAVE - NV SIDE-
INCLUDING THE CITIES OF OLANCHA, FORT IRWIN, NEEDLES, DYER, MITCHELL
CAVERNS, LAS VEGAS, LONE PINE, HOOVER DAM, PRIMM, SHOSHONE, OVERTON,
PANACA, MOUNTAIN PASS, TWENTYNINE PALMS, VIDAL JUNCTION, STOVEPIPE
WELLS, YUCCA, BISHOP, WIKIEUP, PAHRUMP, DAGGETT, BEATTY, TEMPLE BAR,
DESERT HILLS, WESTERN GRAND CANYON, GOLDFIELD, HIKO, SEARCHLIGHT,
MORONGO VALLEY, BOULDER CITY, MOAPA, TUWEEP, AMARGOSA VALLEY, YUCCA
VALLEY, SILVER PEAK, MT TRUMBULL, LAKE HAVASU CITY, RACHEL, PIOCHE,
INDIAN SPRINGS, GOLDEN VALLEY, COLORADO CITY, HENDERSON, LAUGHLIN,
CALIENTE, FURNACE CREEK, SOUTH COVE, DOLAN SPRINGS, BAKER, DESERT
ROCK,
VALENTINE, NORTH LAS VEGAS, CAL-NEV-ARI, INDEPENDENCE, TOPOCK,
MESQUITE, HUALAPAI PEAK, ALAMO, KINGMAN, BULLHEAD CITY, PIPE SPRING
NATIONAL MONUMENT, AND BARSTOW
231 AM PDT TUE AUG 4 2026 /231 AM MST TUE AUG 4 2026/
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT /8 PM MST/
SATURDAY...
* WHAT...DANGEROUSLY HOT CONDITIONS WITH HIGHS 110 TO 120 DEGREES
ACROSS THE MOJAVE DESERT. HIGHS 95 TO 105 DEGREES ACROSS MOST OF
THE SOUTHERN GREAT BASIN AND ARIZONA STRIP. LITTLE TO NO OVERNIGHT
RELIEF IS EXPECTED, PARTICULARLY IN THE MOJAVE DESERT WHERE LOWS OF
80 TO 95 DEGREES ARE FORECAST. THIS WILL RESULT IN MAJOR-TO-EXTREME
HEAT RISK.
* WHERE...PORTIONS OF NORTHWEST ARIZONA, SOUTHEAST CALIFORNIA, AND
SOUTH CENTRAL AND SOUTHERN NEVADA.
* WHEN...UNTIL 8 PM PDT /8 PM MST/ SATURDAY.
* 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.
CAZ519-521-NVZ018-019-050000-
/O.CON.KVEF.HT.Y.0002.000000T0000Z-260809T0300Z/
EASTERN SIERRA SLOPES-WHITE MOUNTAINS OF INYO COUNTY-SHEEP RANGE-
SPRING MOUNTAINS-RED ROCK CANYON-
INCLUDING THE CITIES OF RED ROCK CANYON, WHITNEY PORTAL, MT
CHARLESTON, HAYFORD PK, ASPENDELL, WESTGARD PASS, AND BRISTLECONE
PINE
231 AM PDT TUE AUG 4 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT SATURDAY
* WHAT...HOT CONDITIONS EXPECTED WITH HIGHS 80 TO 90 DEGREES ABOVE
8000 FEET AND 90 TO 100 DEGREES BELOW 8000 FEET. THIS WILL RESULT
IN MODERATE HEAT RISK.
* WHERE...IN CALIFORNIA, EASTERN SIERRA SLOPES AND WHITE MOUNTAINS OF
INYO COUNTY. IN NEVADA, SHEEP RANGE AND SPRING MOUNTAINS-RED ROCK
CANYON.
* WHEN...UNTIL 8 PM PDT SATURDAY.
* IMPACTS...HOT TEMPERATURES MAY CAUSE HEAT 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.
JP
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