Extreme Heat Warning: Emmet; Kossuth; Palo Alto; Pocahontas; Humboldt; Wright; Sac; Calhoun; Webster; Hamilton; Hardin; Crawford; Carroll; Greene; Boone; Story; Marshall; Tama; Audubon; Guthrie; Dallas; Polk; Jasper; Poweshiek; Cass; Adair; Madison; Warren; Marion; Mahaska; Adams; Union; Clarke; Lucas; Monroe; Wapello; Taylor; Ringgold; Decatur; Wayne; Appanoose; Davis

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Extreme Heat Warning — Emmet; Kossuth; Palo Alto; Pocahontas; Humboldt; Wright; Sac; Calhoun; Webster; Hamilton; Hardin; Crawford; Carroll; Greene; Boone; Story; Marshall; Tama; Audubon; Guthrie; Dallas; Polk; Jasper; Poweshiek; Cass; Adair; Madison; Warren; Marion; Mahaska; Adams; Union; Clarke; Lucas; Monroe; Wapello; Taylor; Ringgold; Decatur; Wayne; Appanoose; Davis Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values above 100 expected. * WHERE...Much of Iowa. * WHEN...From 1 PM this afternoon to 9 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Extreme heat will persist through much of next week, potentially including the 4th of July weekend.