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Severe · Extreme Heat WarningActive alert

Extreme Heat Warning issued September 8 at 12:09AM PDT until September 10

Affecting Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Northwest Deserts; Death Valley National Park; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Lake Mead - NV side; Lake Mohave - NV side

In effect until: Sep 8, 2026, 11:00 PM

Lake Havasu and Fort Mohave; Lake Mead - AZ side; Lake Mohave - AZ side; Northwest Deserts; Death Valley National Park; Cadiz Basin; San Bernardino County-Upper Colorado River Valley; Northeast Clark County; Western Clark and Southern Nye County; Las Vegas Valley; Lake Mead - NV side; Lake Mohave - NV side

Likely impact; effects through 11:00 PM.

Stay in air conditioning if possible. Drink water regularly and check on elderly neighbors.

See it on the live mapView official source
Read the original bulletin (official text)
* WHAT...Dangerously hot late-season conditions expected with high
temperatures up to 112 to 116 in Death Valley and the Colorado
River Valley; up to 105 to 110 in the Las Vegas Valley, Moapa
Valley, and Pahrump Valley.

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

* WHEN...From 10 AM PDT / MST to 8 PM PDT / MST Thursday.

* IMPACTS...Heat-related illnesses increase significantly during
extreme heat.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™