Dangerous, unprecedented heat wave hits the West

ABC News
March 19, 2026
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3 min read

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Severe heat wave with temperatures 25 to 40 degrees above normal grips Western United States, raising health and infrastructure risks.

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A severe heat wave is gripping the Western United States, with temperatures running 25 to 40 degrees above normal across the region. The conditions are described as both dangerous and unprecedented, raising immediate concerns about public health, power grid strain, and wildfire risk during the peak summer season. Extreme heat events of this magnitude can trigger heat-related illnesses, deaths, and cascading infrastructure failures as demand for air conditioning surges. The Western power grid, already stressed by drought and high demand, faces potential rolling blackouts if cooling demand overwhelms supply. Emergency officials are advising residents to limit outdoor activity and check on vulnerable populations as the heat wave persists.

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Emergency officials are advising residents to limit outdoor activity and check on vulnerable populations as the heat wave persists.

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