Extreme Heat Watch

URGENT - WEATHER MESSAGE
National Weather Service Las Vegas NV
106 AM PDT Mon Aug 18 2025

AZZ001>003-036-CAZ522>527-NVZ015>022-182115-
/O.NEW.KVEF.XH.A.0005.250820T1500Z-250824T0600Z/
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-Lincoln
County-Northeast Clark County-Western Clark and Southern Nye
County-Sheep Range-Spring Mountains-Red Rock Canyon-Las Vegas
Valley-Lake Mead National Recreation Area-Southern Clark County-
Including the cities of Oatman, Desert Hills, Shoshone,
Searchlight, Hiko, Vidal Junction, Mt Charleston, Baker, Hayford
Pk, Mountain Pass, Mt Trumbull, Panaca, Stovepipe Wells, Tuweep,
Primm, Lake Havasu City, Dolan Springs, Pipe Spring National
Monument, Daggett, Desert Rock, Morongo Valley, Pahrump, Moapa,
Mitchell Caverns, Amargosa Valley, Alamo, Henderson, Cal-Nev-Ari,
Boulder City, Red Rock Canyon, Barstow, Laughlin, Colorado City,
Twentynine Palms, Bullhead City, Wikieup, Yucca Valley, Kingman,
Overton, Caliente, Indian Springs, Hoover Dam, Needles, Las
Vegas, Rachel, Valentine, Western Grand Canyon, Furnace Creek,
Pioche, Topock, North Las Vegas, Yucca, Mesquite, Golden Valley,
Fort Irwin, and Mohave Valley
106 AM PDT Mon Aug 18 2025 /106 AM MST Mon Aug 18 2025/

...EXTREME HEAT WATCH IN EFFECT FROM WEDNESDAY MORNING THROUGH
SATURDAY EVENING...

* WHAT...Dangerously hot conditions with high temperatures around
  105 in
  Kingman, Golden Valley, and Dolan Springs; around 110 in Las Vegas,
  Pahrump, Barstow-Daggett, the Morongo Basin and Twentynine Palms,
  and 115 in Laughlin, Bullhead City, Needles, and Lake Havasu City,
  and around 120 at Furnace Creek in Death Valley National Park.
  Minimal overnight relief from the heat is expected as low
  temperatures remain very warm.

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

* WHEN...From Wednesday morning through Saturday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat events. Above normal daytime temperatures combined
  with minimal overnight relief from the heat will increase
  potential heat impacts.

* ADDITIONAL DETAILS...Widespread Major to isolated Extreme Heat
  Risk is possible, which could affect much of the general
  population without proper hydration or adequate cooling.

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.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/lasvegas

AN

Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Grand Junction CO
311 AM MDT Mon Aug 18 2025

COZ001>014-017>023-UTZ022>025-027>029-191200-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-Upper Gunnison River Valley-
Uncompahgre Plateau and Dallas Divide-Northwest San Juan Mountains-
Southwest San Juan Mountains-Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
311 AM MDT Mon Aug 18 2025

This Hazardous Weather Outlook is for northwest Colorado, southwest
Colorado, west central Colorado, east central Utah, northeast Utah
and southeast Utah.

.DAY ONE...Today and tonight.

Isolated terrain-based storms are possible this afternoon. Storms
will be capable of producing gusty outflow winds up to 40 mph.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Isolated thunderstorm chances continue over the higher terrain
through Wednesday before increasing in coverage Thursday and beyond.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$