Extreme Heat Warning: Shelby; Pottawattamie; Mills; Montgomery; Fremont; Page; Douglas; Sarpy

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Extreme Heat Warning — Shelby; Pottawattamie; Mills; Montgomery; Fremont; Page; Douglas; Sarpy Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values up to 104 southwest Iowa and the Omaha metro. * WHERE...In Iowa, Fremont, Mills, Montgomery, Page, Pottawattamie, and Shelby Counties. In Nebraska, Douglas and Sarpy Counties. * WHEN...Until 9 PM CDT Tuesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Overnight heat indices in the upper-70s to lower-80s will make it difficult for homes without air conditioning to cool down. Hot weather is expected to persist through the week.