Extreme heat warning on a highway street sign

  • Extreme Heat by Chris Yarzab. Used via CC BY 2.0, via Flickr.

    • Hazard

    Extreme Heat

    A heat wave is a period of abnormally and uncomfortably hot and unusually humid weather, typically lasting two or more days with temperatures above the historical averages for a given area.

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    Related Terms
    Heat Wave

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