Headline:
Heat Advisory issued September 18 at 2:00PM CDT until September 18 at 8:00PM CDT by NWS St Louis MO
Event:
Heat Advisory
Urgency:
Expected
Effective:
September 18, 2026 - 12:00pm
Expires:
September 18, 2026 - 6:00pm
Description:
* WHAT...Heat index values up to 105.
* WHERE...In Illinois, Fayette IL, Montgomery IL, Calhoun IL, Greene
IL, Jersey IL, and Macoupin IL Counties. In Missouri, Boone MO,
Callaway MO, Lincoln MO, and Montgomery MO Counties.
* WHEN...Until 8 PM CDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
Instruction:
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Area Description:
Greene; Macoupin; Montgomery; Fayette; Calhoun; Jersey; Boone; Callaway; Montgomery; Lincoln
Forcast Office:
NWS St Louis MO
Sender:
w-nws.webmaster@noaa.gov