Extreme Heat Warning
Status
New Event Active alertStart Time
Mon 08/11/2025 01:00 PM EDTEnd Time
Tue 08/12/2025 11:00 PM EDTSignificance
WarningImpacts
High impact
Full Alert Message
URGENT - WEATHER MESSAGE National Weather Service Las Vegas NV 147 AM PDT Sun Aug 10 2025 ...EXTREME HEAT WARNING IN EFFECT FROM 10 AM PDT / MST MONDAY TO 8 PM PDT / MST TUESDAY... * WHAT...Dangerously hot conditions with high temperatures between 103 and 106 in Kingman, Golden Valley, and Dolan Springs; between 108 and 112 in Barstow-Daggett, Twentynine Palms, and Yucca Valley; between 112 and 116 in Lake Havasu City, Needles, and Fort Mohave; between 118 and 122 in Death Valley National Park. Major Heat Risk. * WHERE...In Arizona, Lake Havasu and Fort Mohave and Northwest Deserts. In California, Cadiz Basin, Death Valley National Park, Morongo Basin, San Bernardino County-Upper Colorado River Valley, and Western Mojave Desert. In Nevada, Western Clark and Southern Nye County. * WHEN...From 10 AM PDT / MST Monday to 8 PM PDT / MST Tuesday. * 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.
Technical Header
AZZ002-003-CAZ522-523-525>527-NVZ017-102200- /O.NEW.KVEF.XH.W.0008.250811T1700Z-250813T0300Z/ Lake Havasu and Fort Mohave-Northwest Deserts-Death Valley National Park-Western Mojave Desert-Morongo Basin-Cadiz Basin-San Bernardino County-Upper Colorado River Valley-Western Clark and Southern Nye County- Including the cities of Daggett, Golden Valley, Fort Irwin, Yucca Valley, Lake Havasu City, Vidal Junction, Amargosa Valley, Furnace Creek, Desert Hills, Morongo Valley, Kingman, Shoshone, Valentine, Needles, Topock, Dolan Springs, Stovepipe Wells, Wikieup, Indian Springs, Twentynine Palms, Pahrump, Yucca, Barstow, and Desert Rock 147 AM PDT Sun Aug 10 2025 /147 AM MST Sun Aug 10 2025/