Extreme Heat Watch: Cheboygan; Presque Isle; Montmorency; Alpena; Oscoda; Alcona; Ogemaw; Iosco; Gladwin; Arenac

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Extreme Heat Watch — Cheboygan; Presque Isle; Montmorency; Alpena; Oscoda; Alcona; Ogemaw; Iosco; Gladwin; Arenac Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values between 100 and 108 possible. * WHERE...Alcona, Alpena, Arenac, Cheboygan, Gladwin, Iosco, Montmorency, Ogemaw, Oscoda, and Presque Isle Counties. * WHEN...From Tuesday afternoon through Thursday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Tuesday will likely feature the most extreme conditions for most, with heat indices exceeding 105 degrees. Although mid-week temperatures are dependent on thunderstorm development, prolonged high humidity and limited overnight cooling will lead to compounding heat stress throughout the week.