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Extreme Heat Warning Extended Through Friday for Lake Havasu, Las Vegas, and Death Valley

The National Weather Service has extended the Extreme Heat Warning for portions of southern Nevada, northwest Arizona, and southeast California, including Lake Havasu, Las Vegas, and Death Valley, through 8 p.m. PDT/MST Friday.

4 reports on this incident · first at Aug 24, 2026, 10:26 a.m. ET

By AI ReporterWritten Aug 24, 2026, 10:50 a.m. ET
Developing · checked 3h ago

Hazard products are revised and cancelled as conditions change. Check the National Weather Service for the current alert before acting on this report.

We last searched for new coverage of this at Aug 24, 2026, 10:37 a.m. ET — checked 3h ago.

The National Weather Service in Las Vegas has extended the for portions of southern Nevada, northwest Arizona, and southeast California. The , which was originally set to expire earlier, now runs through 8 p.m. PDT/MST Friday, August 28, according to the National Weather Service. The covers zones, including Lake Havasu, Fort Mohave, Lake Mead, the Las Vegas Valley, Death Valley National Park, and the Morongo Basin. Dangerously hot conditions are expected, with temperatures up to 115 to 118 degrees across Death Valley and the Colorado River Valley, up to 108 to 112 degrees across Moapa Valley, the Las Vegas Valley, the Pahrump Valley, and the Morongo Valley, and up to 90 to 95 degrees in the Hualapai Mountains. Overnight lows will be in the upper 80s to low 90s for desert valleys. The was issued at 7:22 a.m. PDT Monday, August 24. The National Weather Service advises drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking on relatives and neighbors. Do not leave young children and pets in unattended vehicles, as car interiors will reach lethal temperatures in a matter of minutes.

Earlier reports

  1. Aug 24, 2026, 10:36 a.m. ET

    Extreme Heat Warning Issued for Lake Havasu, Fort Mohave, and Lake Mead Through Friday

    The National Weather Service in Las Vegas has issued an Extreme Heat Warning for portions of northwest Arizona, southeast California, and southern Nevada, in effect from 7:22 AM PDT/MST Monday, August 24, through 8 PM PDT/MST Friday, August 28. The warning covers 17 zones, including Lake Havasu, Fort Mohave, Lake Mead, Death Valley National Park, and the Las Vegas Valley.

    Dangerously hot conditions are expected through the work week, with temperatures up to 115 to 118 degrees across Death Valley and the Colorado River Valley; up to 108 to 112 degrees across Moapa Valley, the Las Vegas Valley, the Pahrump Valley, and the Morongo Valley; and up to 90 to 95 degrees in the Hualapai Mountains. Overnight lows will be in the upper-80s to low-90s for desert valleys.

    The National Weather Service advises drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking on relatives and neighbors. Do not leave young children and pets in unattended vehicles, as car interiors will reach lethal temperatures in a matter of minutes. Anyone overcome by heat should be moved to a cool and shaded location; heat stroke is an emergency, and 9 1 1 should be called.

  2. Aug 24, 2026, 10:31 a.m. ET

    Extreme Heat Warning for Lake Havasu, Fort Mohave, Lake Mead, and Surrounding Areas Until Friday

    The National Weather Service in Las Vegas warns that heat-related illnesses increase significantly during extreme heat and high humidity events. The warning is in effect from 7:22 a.m. PDT/MST Monday, August 24, 2026, through 8 p.m. PDT/MST Friday.

    The warning covers portions of northwest Arizona, southeast California, and southern Nevada, including 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), and Lake Mohave (NV side). Temperatures are expected to reach 115 to 118 degrees in Death Valley and the Colorado River Valley, 108 to 112 in the Las Vegas Valley and surrounding valleys, and 90 to 95 in the Hualapai Mountains. Overnight lows will be in the upper 80s to low 90s for desert valleys.

    The Weather Service advises drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking on relatives and neighbors. Do not leave young children and pets in unattended vehicles, as car interiors will reach lethal temperatures in minutes. Anyone overcome by heat should be moved to a cool and shaded location; heat stroke is an emergency, and 9 1 1 should be called.

  3. Aug 24, 2026, 10:26 a.m. ETFirst report

    Extreme Heat Warning Issued for Lake Havasu, Fort Mohave, and Lake Mead Areas

    The National Weather Service in Las Vegas has issued an Extreme Heat Warning for portions of northwest Arizona, southeast California, and southern Nevada, in effect from 7:22 AM PDT/MST on Monday, August 24, 2026, through 8 PM PDT/MST Friday. The warning covers 17 zones, including the Las Vegas Valley, Death Valley National Park, and the Colorado River Valley.

    Temperatures are expected to reach up to 115 to 118 degrees in Death Valley and the Colorado River Valley, up to 108 to 112 in the Moapa Valley, Las Vegas Valley, Pahrump Valley, and Morongo Valley, and up to 90 to 95 in the Hualapai Mountains. Overnight lows will be in the upper 80s to low 90s for desert valleys.

    The warning advises drinking plenty of fluids, staying in an air-conditioned room, staying out of the sun, and checking on relatives and neighbors. It warns that car interiors will reach lethal temperatures in minutes and that heat stroke is an emergency, urging anyone overcome by heat to call 9 1 1.

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  1. Version 124 Aug 2026, 14:50current

    First published.

  2. Version 124 Aug 2026, 14:31current

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  3. Version 124 Aug 2026, 14:26current

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  4. Version 124 Aug 2026, 14:36current

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