Weather Alerts For Chain of Rocks, MO

# HEADLINE -------------------- FLOOD WATCH IN EFFECT FROM LATE TONIGHT THROUGH SUNDAY EVENING # DETAILS -------------------- WHAT Flash flooding caused by excessive rainfall is possible. WHERE Portions of Illinois, including the following areas, Adams IL, Brown IL, Calhoun IL and Pike IL and Missouri, including the following areas, Audrain MO, Boone MO, Callaway MO, Cole MO, Gasconade MO, Knox MO, Lewis MO, Lincoln MO, Marion MO, Moniteau MO, Monroe MO, Montgomery MO, Osage MO, Pike MO, Ralls MO, Shelby MO and Warren MO. WHEN From late tonight through Sunday evening. IMPACTS Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. ADDITIONAL DETAILS - Thunderstorms producing heavy rainfall moving over the same locations could produce flash flooding. Rainfall amounts of 1-3 inches are expected with locally higher amounts possible. ISSUED AT Saturday, June 20, 2026 at 1:28 AM CDT ISSUED BY National Weather Service St Louis MO HEADER URGENT - IMMEDIATE BROADCAST REQUESTED | Flood Watch # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. # AREAS AFFECTED -------------------- Gasconade MO, Marion MO, Adams IL, Audrain MO, Boone MO, Brown IL, Calhoun IL, Callaway MO, Cole MO, Knox MO, Lewis MO, Lincoln MO, Moniteau MO, Monroe MO, Montgomery MO, Osage MO, Pike IL, Pike MO, Ralls MO, Shelby MO, Warren MO Including the cities of Mexico, Quincy, Pittsfield, Jefferson City, Columbia, Bowling Green, Hannibal, Mount Sterling, and Fulton