⚠️ Flood Watch – Greene; Macoupin; Montgomery; Bond; Fayette; Clinton; Marion; Washington; Calhoun; Jersey; Madison; St. Clair; Monroe; Boone; Moniteau; Cole; Osage; Callaway; Montgomery; Lincoln; Gasconade; Warren; St. Charles; Franklin; St. Louis; St. Louis City; Jefferson; Crawford; Washington – Wednesday, June 24, 2026

Flood Watch issued June 24 at 11:53AM CDT until June 26 at 7:00AM CDT by NWS St Louis MO

Details

* WHAT…Flash flooding caused by excessive rainfall is possible.

* WHERE…Portions of Illinois, including the following areas, Bond
IL, Calhoun IL, Clinton IL, Fayette IL, Greene IL, Jersey IL,
Macoupin IL, Madison IL, Marion IL, Monroe IL, Montgomery IL, Saint
Clair IL and Washington IL and Missouri, including the following
areas, Boone MO, Callaway MO, Cole MO, Crawford MO, Franklin MO,
Gasconade MO, Jefferson MO, Lincoln MO, Moniteau MO, Montgomery MO,
Osage MO, Saint Charles MO, Saint Louis City MO, Saint Louis MO,
Warren MO and Washington MO.

* WHEN…From Thursday afternoon through Friday morning.

* IMPACTS…Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.

* ADDITIONAL DETAILS…
– Multiple waves of thunderstorms capable of heavy rainfall.
– Some locations that may experience flooding include…
St. Louis, Columbia, O’Fallon, St. Charles, St. Peters,
Florissant, Chesterfield, Belleville, Jefferson City, Wildwood,
University City, Ballwin, Granite City, Wentzville, Alton,
Kirkwood, Maryland Heights, East St. Louis and Hazelwood.

Instructions

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

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