396
WWUS75 KVEF 210916
NPWVEF
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE LAS VEGAS NV
216 AM PDT SAT MAR 21 2026
AZZ001>003-036-CAZ522>527-NVZ016-017-020>022-212300-
/O.CON.KVEF.XH.W.0001.000000T0000Z-260323T0300Z/
NORTHWEST PLATEAU-LAKE HAVASU AND FORT MOHAVE-NORTHWEST DESERTS-
LAKE MEAD NATIONAL RECREATION AREA-DEATH VALLEY NATIONAL PARK-
WESTERN MOJAVE DESERT-EASTERN MOJAVE DESERT-MORONGO BASIN-CADIZ
BASIN-SAN BERNARDINO COUNTY-UPPER COLORADO RIVER VALLEY-NORTHEAST
CLARK COUNTY-WESTERN CLARK AND SOUTHERN NYE COUNTY-LAS VEGAS
VALLEY-LAKE MEAD NATIONAL RECREATION AREA-SOUTHERN CLARK COUNTY-
INCLUDING THE CITIES OF MT TRUMBULL, LAKE HAVASU CITY, BAKER,
MOUNTAIN PASS, WIKIEUP, PAHRUMP, WESTERN GRAND CANYON, HOOVER
DAM, VIDAL JUNCTION, DOLAN SPRINGS, FURNACE CREEK, MITCHELL
CAVERNS, MOAPA, TUWEEP, KINGMAN, LAUGHLIN, INDIAN SPRINGS, DESERT
HILLS, MOHAVE VALLEY, OVERTON, BULLHEAD CITY, YUCCA, SEARCHLIGHT,
LAS VEGAS, PIPE SPRING NATIONAL MONUMENT, BOULDER CITY, PRIMM,
FORT IRWIN, YUCCA VALLEY, NEEDLES, HENDERSON, TOPOCK, TWENTYNINE
PALMS, COLORADO CITY, BARSTOW, MESQUITE, MORONGO VALLEY,
CAL-NEV-ARI, NORTH LAS VEGAS, AMARGOSA VALLEY, VALENTINE, DESERT
ROCK, SHOSHONE, DAGGETT, STOVEPIPE WELLS, GOLDEN VALLEY, AND
OATMAN
216 AM PDT SAT MAR 21 2026 /216 AM MST SAT MAR 21 2026/
...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT / MST
SUNDAY...
* WHAT...DANGEROUSLY HOT TEMPERATURES CLIMBING TO NEAR-30 DEGREES
ABOVE SEASONAL NORMALS.
* WHERE...PORTIONS OF NORTHWEST ARIZONA, SOUTHEAST CALIFORNIA, AND
SOUTHERN NEVADA.
* WHEN...UNTIL 8 PM PDT / MST SUNDAY.
* IMPACTS...HEAT-RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT EVENTS.
* ADDITIONAL DETAILS...EXTREME EARLY-SEASON HEAT COUPLED WITH HIGH
TOURISM RATES WILL MAKE THIS HEAT VERY DANGEROUS, PARTICULARLY FOR
THOSE NOT ACCLIMATED TO THE HEAT AND/OR TRAVELING FROM COOLER
CLIMATES. NUMEROUS DAILY AND MONTHLY HEAT RECORDS ARE IN JEOPARDY
THROUGH AT LEAST SUNDAY.
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.
CAZ520-NVZ014-015-212300-
/O.CON.KVEF.HT.Y.0001.000000T0000Z-260322T0300Z/
OWENS VALLEY-ESMERALDA AND CENTRAL NYE COUNTY-LINCOLN COUNTY-
INCLUDING THE CITIES OF DYER, LONE PINE, CALIENTE, BEATTY,
BISHOP, OLANCHA, PIOCHE, SILVER PEAK, INDEPENDENCE, GOLDFIELD,
HIKO, RACHEL, PANACA, AND ALAMO
216 AM PDT SAT MAR 21 2026
..HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING
* WHAT...HOT TEMPERATURES CLIMBING TO NEAR-30 DEGREES ABOVE SEASONAL
NORMALS.
* WHERE...IN CALIFORNIA, OWENS VALLEY. IN NEVADA, ESMERALDA AND
CENTRAL NYE COUNTY AND LINCOLN COUNTY.
* WHEN...UNTIL 8 PM PDT THIS EVENING.
* IMPACTS...HEAT-RELATED ILLNESSES INCREASE SIGNIFICANTLY DURING
EXTREME HEAT EVENTS.
* ADDITIONAL DETAILS...EXTREME EARLY-SEASON HEAT COUPLED WITH HIGH
TOURISM RATES WILL MAKE THIS HEAT VERY DANGEROUS, PARTICULARLY FOR
THMSOSE NOT ACCLIMATED TO THE HEAT AND/OR TRAVELING FROM COOLER
CLIMATES. NUMEROUS DAILY AND MONTHLY HEAT RECORDS ARE IN JEOPARDY
THROUGH AT LEAST SUNDAY.
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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