565
WWUS75 KVEF 161745
NPWVEF

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
1045 AM PDT Sun Aug 16 2026

AZZ002-570-571-575-576-CAZ522-524>527-NVZ016-017-020-022-025-026-
171200-
/O.NEW.KVEF.XH.A.0003.260818T1700Z-260822T0300Z/
Lake Havasu and Fort Mohave-Lake Mead - AZ side-Lake Mohave - AZ
side-Hualapai Mountains-Northwest Deserts-Death Valley National
Park-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-
Southern Clark County-Lake Mead - NV side-Lake Mohave - NV side-
Including the cities of Vidal Junction, Twentynine Palms, Yucca
Valley, Mitchell Caverns, South Cove, Overton, Searchlight, Furnace
Creek, Las Vegas, Hualapai Peak, Pahrump, Topock, Valentine, Morongo
Valley, North Las Vegas, Desert Rock, Shoshone, Amargosa Valley,
Dolan Springs, Boulder City, Lake Havasu City, Stovepipe Wells,
Wikieup, Yucca, Mountain Pass, Needles, Laughlin, Moapa, Hoover Dam,
Temple Bar, Indian Springs, Henderson, Mesquite, Primm, Desert Hills,
Golden Valley, Kingman,
Baker, Cal-Nev-Ari, and Bullhead City
1045 AM PDT Sun Aug 16 2026 /1045 AM MST Sun Aug 16 2026/

...EXTREME HEAT WATCH IN EFFECT FROM TUESDAY MORNING THROUGH FRIDAY
EVENING...

* WHAT...Dangerously hot conditions with temperatures up to 115 to
  118 degrees expected through Death Valley and the Lower Colorado
  River Valley, with highs between 107 to 110 degrees elsewhere.

* WHERE...Portions of northwest Arizona, southeast California, and
  southern Nevada.

* WHEN...From Tuesday morning through Friday 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.

Monitor the latest forecasts and warnings for updates.

&&

$$

JP