Extreme Heat Warning: Clinton; Washington; Randolph; Madison; St. Clair; Monroe; Boone; Moniteau; Cole; Osage; Callaway; Montgomery; Gasconade; Warren; St. Charles; Franklin; St. Louis; St. Louis City; Jefferson

source: us-gov-api (us-gov-api:noaa-weather)published 2026-08-12 13:14ingested 2026-08-13 07:31

extract

Extreme Heat Warning — Clinton; Washington; Randolph; Madison; St. Clair; Monroe; Boone; Moniteau; Cole; Osage; Callaway; Montgomery; Gasconade; Warren; St. Charles; Franklin; St. Louis; St. Louis City; Jefferson Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with heat index values up to 111. * WHERE...Portions of south central and southwest Illinois and central and east central Missouri. * WHEN...Until 9 PM CDT Saturday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

retained text

The historical document was shared with another weather alert and cannot be attributed to this record. The original extract is preserved above; the exact alert link was not retained.