Extreme Heat Warning: Ottawa; Sandusky; Erie; Lorain; Cuyahoga; Lake; Geauga; Ashtabula Inland; Seneca; Huron; Medina; Summit; Portage; Trumbull; Wyandot; Crawford; Richland; Ashland; Wayne; Stark; Mahoning; Marion; Morrow; Holmes; Knox; Ashtabula Lakeshore

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Extreme Heat Warning — Ottawa; Sandusky; Erie; Lorain; Cuyahoga; Lake; Geauga; Ashtabula Inland; Seneca; Huron; Medina; Summit; Portage; Trumbull; Wyandot; Crawford; Richland; Ashland; Wayne; Stark; Mahoning; Marion; Morrow; Holmes; Knox; Ashtabula Lakeshore Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values up to 107 expected. * WHERE...Portions of north central, northeast, and northwest Ohio. * WHEN...From noon today to 8 PM EDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. The prolonged nature of the heat event with little overnight relief through the week will increase impacts to vulnerable populations.