Extreme Heat Warning: West Polk; Norman; Clay; Kittson; Roseau; Lake Of The Woods; West Marshall; East Marshall; North Beltrami; Pennington; Red Lake; East Polk; North Clearwater; South Beltrami; Mahnomen; South Clearwater; Hubbard; West Becker; East Becker; Wilkin; West Otter Tail; East Otter Tail; Wadena; Grant; Towner; Cavalier; Pembina; Benson; Ramsey; Eastern Walsh County; Eddy; Nelson; Grand Forks; Griggs; Steele; Traill; Barnes; Cass; Ransom; Sargent; Richland; Western Walsh County

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Extreme Heat Warning — West Polk; Norman; Clay; Kittson; Roseau; Lake Of The Woods; West Marshall; East Marshall; North Beltrami; Pennington; Red Lake; East Polk; North Clearwater; South Beltrami; Mahnomen; South Clearwater; Hubbard; West Becker; East Becker; Wilkin; West Otter Tail; East Otter Tail; Wadena; Grant; Towner; Cavalier; Pembina; Benson; Ramsey; Eastern Walsh County; Eddy; Nelson; Grand Forks; Griggs; Steele; Traill; Barnes; Cass; Ransom; Sargent; Richland; Western Walsh County Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values up to 110 expected. * WHERE...Portions of central, north central, northwest, and west central Minnesota and northeast and southeast North Dakota. * WHEN...From 8 AM Sunday to 1 AM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Overnight relief Sunday night into Monday morning will be minimal, with overnight low temperatures remaining. in the mid 70s along with high humidity.