HEAT ADVISORY
HEAT ADVISORY ISSUED JULY 20 AT 8:23PM CDT UNTIL JULY 21 AT 7:00PM CDT
Effective: 2026-07-20 20:23:00
Expires: 2026-07-21 19:00:00
Issued by: NWS St Louis MO
Alert Text
* WHAT...HEAT INDEX VALUES UP TO 109. * WHERE...PORTIONS OF SOUTH CENTRAL AND SOUTHWEST ILLINOIS AND CENTRAL, EAST CENTRAL, AND SOUTHEAST MISSOURI.
* WHEN...UNTIL 7 PM CDT TUESDAY.
* IMPACTS...HOT TEMPERATURES AND HIGH HUMIDITY MAY CAUSE HEAT ILLNESSES.
More Information
Target Area
CLINTON, WASHINGTON, RANDOLPH, MADISON, ST. CLAIR, MONROE, BOONE, MONITEAU, COLE, OSAGE, CALLAWAY, MONTGOMERY, GASCONADE, WARREN, ST. CHARLES, FRANKLIN, ST. LOUIS, ST. LOUIS CITY, JEFFERSON, CRAWFORD, WASHINGTON, ST. FRANCOIS, STE. GENEVIEVE, IRON, MADISON, REYNOLDS
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