Heat Advisory: Monona; Harrison; Thurston; Burt; Dodge; Washington; Butler; Saunders; Seward; Lancaster; Cass; Otoe; Saline; Jefferson; Gage; Johnson; Nemaha; Pawnee; Richardson

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Heat Advisory — Monona; Harrison; Thurston; Burt; Dodge; Washington; Butler; Saunders; Seward; Lancaster; Cass; Otoe; Saline; Jefferson; Gage; Johnson; Nemaha; Pawnee; Richardson Severity: Moderate. Certainty: Likely. * WHAT...Heat index values up to 105 expected. * WHERE...Portions of southwest and west central Iowa and east central, northeast, and southeast Nebraska. * WHEN...From 1 PM Sunday to 9 PM CDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. * ADDITIONAL DETAILS...Overnight heat indices in the mid-70s and lower-80s will make it difficult for homes without air conditioning to cool down. Hot weather is expected to persist through the week.