Flood Watch

Full Alert Message

URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service St Louis MO 1254 PM CDT Mon Jun 8 2026 ...FLOOD WATCH NOW IN EFFECT THROUGH TUESDAY MORNING... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Illinois, including the following areas, Bond IL, Brown IL, Calhoun IL, Clinton IL, Fayette IL, Greene IL, Jersey IL, Macoupin IL, Madison IL, Marion IL, Monroe IL, Montgomery IL, Pike IL, Saint Clair IL and Washington IL and Missouri, including the following areas, Franklin MO, Gasconade MO, Jefferson MO, Lincoln MO, Montgomery MO, Pike MO, Saint Charles MO, Saint Louis City MO, Saint Louis MO and Warren MO. * WHEN...Through Tuesday morning. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Additional showers and thunderstorms with locally heavy rainfall will be possible, which could lead to flash flooding, especially if they occur over saturated soils. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.