Extreme Heat Watch: Butler; Bremer; Grundy; Black Hawk; Marshall; Tama; Jasper; Poweshiek; Marion; Mahaska; Clarke; Lucas; Monroe; Wapello; Decatur; Wayne; Appanoose; Davis

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Extreme Heat Watch — Butler; Bremer; Grundy; Black Hawk; Marshall; Tama; Jasper; Poweshiek; Marion; Mahaska; Clarke; Lucas; Monroe; Wapello; Decatur; Wayne; Appanoose; Davis Severity: Severe. Certainty: Likely. * WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values near or exceeding 110 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 110 possible. * WHERE...Portions of central, north central, northeast, south central, and southeast Iowa. * WHEN...For the Extreme Heat Warning, from noon to 9 PM CDT Sunday. For the Extreme Heat Watch, from Sunday evening through Monday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.