Extreme Heat Watch: Emmet; Kossuth; Winnebago; Palo Alto; Hancock; Pocahontas; Humboldt; Wright; Sac; Calhoun; Webster; Hamilton; Crawford; Carroll; Greene; Boone; Story; Audubon; Guthrie; Dallas; Polk; Cass; Adair; Madison; Warren; Adams; Union; Taylor; Ringgold

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Extreme Heat Watch — Emmet; Kossuth; Winnebago; Palo Alto; Hancock; Pocahontas; Humboldt; Wright; Sac; Calhoun; Webster; Hamilton; Crawford; Carroll; Greene; Boone; Story; Audubon; Guthrie; Dallas; Polk; Cass; Adair; Madison; Warren; Adams; Union; Taylor; Ringgold Severity: Severe. Certainty: Likely. * WHAT...For the Heat Advisory, heat index values around 105 or higher expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values near or exceeding 110 possible. * WHERE...Portions of western into central and northern Iowa. * WHEN...For the Heat Advisory, from noon Saturday to noon CDT Sunday. For the Extreme Heat Watch, from Sunday afternoon through Monday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.