⚠️ 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 – Monday, July 20, 2026

Extreme Heat Warning issued July 20 at 8:38AM CDT until July 21 at 7:00PM CDT by NWS Paducah KY

Details

* 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.

Instructions

Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.

This alert was automatically posted by SkyGuard, MWSC’s severe weather alerting system. Source: National Weather Service.