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Illinois, Missouri Severe Extreme Heat Warning | Effective 07/27/2026 10:14

Extreme Heat Warning issued July 27 at 12:14PM CDT until July 27 at 9:00PM CDT by NWS St Louis MO

Event: Extreme Heat Warning

Desc: * WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110. For the Heat Advisory, heat index values up to 103 expected. * WHERE...Portions of south central Illinois and central and east central Missouri. * WHEN...For the Extreme Heat Warning, until 9 PM CDT this evening. For the Heat...

Areas: Bond County IL, Clinton County IL, Marion County IL, Boone County MO, Moniteau County MO, Cole County MO, Osage County MO, Callaway County MO, Montgomery County MO, Lincoln County MO, Gasconade County MO, Warren County MO, Franklin County MO

Severity: Severe

Urgency: Expected

Effective: Monday, July 27, 2026 - 10:14

Expires: Tuesday, July 28, 2026 - 04:15

Sender: [email protected]

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Public Safety Alerts