# Extreme Heat Warning: Jefferson; Perry; Franklin; Hamilton; Jackson; Williamson; Saline; Gallatin; Union; Johnson; Pope; Hardin; Alexander; Pulaski; Massac; Fulton; Hickman; Carlisle; Ballard; McCracken; Graves; Livingston; Marshall; Calloway; Crittenden; Lyon; Trigg; Caldwell; Union; Webster; Hopkins; Christian; Muhlenberg; Todd; Perry; Bollinger; Cape Girardeau; Wayne; Carter; Ripley; Butler; Stoddard; Scott; Mississippi; New Madrid — retained record

> Retained us-gov-api record from us-gov-api:noaa-weather.

Canonical: https://highsignal.app/data/records/4bd6b2132504c788

[← sources](https://highsignal.app/data)


source: [us-gov-api](https://highsignal.app/data/us-gov-api) (us-gov-api:noaa-weather)  published 2026-07-20 23:24 ingested 2026-07-21 08:27

[original source ↗](http://www.weather.gov/)

## extract

Extreme Heat Warning — Jefferson; Perry; Franklin; Hamilton; Jackson; Williamson; Saline; Gallatin; Union; Johnson; Pope; Hardin; Alexander; Pulaski; Massac; Fulton; Hickman; Carlisle; Ballard; McCracken; Graves; Livingston; Marshall; Calloway; Crittenden; Lyon; Trigg; Caldwell; Union; Webster; Hopkins; Christian; Muhlenberg; Todd; Perry; Bollinger; Cape Girardeau; Wayne; Carter; Ripley; Butler; Stoddard; Scott; Mississippi; New Madrid
Severity: Severe. Certainty: Likely.
* WHAT...For the Heat Advisory, heat index values of 100 to 106. For
the Extreme Heat Warning, dangerously hot conditions with heat
index values of 110 to 116.

* WHERE...Portions of southern Illinois, western Kentucky, and
southeast Missouri.

* WHEN...For the Heat Advisory, until 11 AM CDT Tuesday. For the
Extreme Heat Warning, from 11 AM to 7 PM CDT Tuesday.

* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events. Hot temperatures and high
humidity may cause heat illnesses.

## 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The historical document was shared with another weather alert and cannot be attributed to this record.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.