Weather Alerts For Saint Jacob, IL

# HEADLINE -------------------- FLOOD WATCH IN EFFECT FROM SUNDAY MORNING THROUGH LATE SUNDAY NIGHT # DETAILS -------------------- WHAT Flash flooding caused by excessive rainfall is possible. WHERE Portions of Illinois, including the following areas, Bond IL, Fayette IL, Greene IL, Jersey IL, Macoupin IL, Madison IL and Montgomery IL and east central Missouri, including the following areas, Franklin MO, Saint Charles MO, Saint Louis City MO and Saint Louis MO. WHEN From Sunday morning through late Sunday night. 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 -------------------- Madison IL, Bond IL, Fayette IL, Franklin MO, Greene IL, Jersey IL, Macoupin IL, Montgomery IL, Saint Charles MO, Saint Louis City MO, Saint Louis MO Including the cities of Alton, Saint Charles, Sullivan, Washington, Saint Louis, Vandalia, Litchfield, Union, and Edwardsville