751 WWUS75 KVEF 241422 NPWVEF URGENT - WEATHER MESSAGE National Weather Service Las Vegas NV 722 AM PDT Mon Aug 24 2026 AZZ002-570-571-575-576-CAZ522>527-NVZ016-017-020-022-025-026-250300- /O.NEW.KVEF.XH.W.0005.260824T1422Z-260825T0300Z/ 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- 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 Mitchell Caverns, Amargosa Valley, Pahrump, South Cove, Shoshone, Kingman, Yucca Valley, Golden Valley, Primm, Stovepipe Wells, Lake Havasu City, Twentynine Palms, Laughlin, Mesquite, Yucca, Morongo Valley, Overton, Bullhead City, Searchlight, North Las Vegas, Moapa, Mountain Pass, Henderson, Cal-Nev-Ari, Barstow, Indian Springs, Las Vegas, Valentine, Dolan Springs, Temple Bar, Vidal Junction, Wikieup, Fort Irwin, Furnace Creek, Desert Rock, Needles, Topock, Hoover Dam, Baker, Boulder City, Desert Hills, Daggett, and Hualapai Peak 722 AM PDT Mon Aug 24 2026 /722 AM MST Mon Aug 24 2026/ ...EXTREME HEAT WARNING IN EFFECT UNTIL 8 PM PDT / MST THIS EVENING... * WHAT...Dangerously hot conditions expected through the work week, with temperatures up to 115 to 118 across Death Valley and the Colorado River Valley; up to 108 to 112 across Moapa Valley, the Las Vegas Valley, the Pahrump Valley, and the Morongo Valley; up to 90 to 95 in the Hualapai Mountains. Overnight lows will be in the upper-80s to low-90s for desert valleys. * WHERE...Portions of northwest Arizona, southeast California, and southern Nevada. * WHEN...Until 8 PM PDT / MST this evening. * IMPACTS...Heat-related illnesses increase significantly during extreme heat and high humidity 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. && $$ JCS