Weather Alerts For Caledonia, IL

# HEADLINE -------------------- FLOOD WATCH NOW IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON # DETAILS -------------------- WHAT Flash flooding caused by excessive rainfall continues to be possible. WHERE Portions of Illinois, including the following areas, Boone, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Lake IL, Lee, McHenry, Northern Cook, Northern Will, Ogle, Southern Cook, Southern Will and Winnebago and northwest Indiana, including the following areas, Lake IN and Porter. WHEN Until 1 PM CDT this afternoon. IMPACTS Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Underpasses may be flooded. Roads and streets may be flooded. Basement flooding may occur. ADDITIONAL DETAILS - Periods of showers and thunderstorms are expected through midday. Swaths of torrential rain with 2 inch per hour rainfall rates, or higher are likely to occur within the watch area and may result in areas of flash flooding and cause rapid rises on area rivers, creeks, and streams. - http://www.weather.gov/safety/flood ISSUED AT Sunday, September 20, 2026 at 1:33 AM CDT ISSUED BY National Weather Service Chicago IL HEADER URGENT - IMMEDIATE BROADCAST REQUESTED | Flood Watch # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- A Flood Watch for flash flooding means rapid-onset flooding is possible, but not yet certain, based upon the latest forecasts. Flash flooding is a dangerous situation. Persons with interests along area rivers, creeks, and other waterways should monitor the latest forecasts and be prepared to take action should flooding develop. # AREAS AFFECTED -------------------- Boone, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Lake IL, Lake IN, Lee, McHenry, Northern Cook, Northern Will, Ogle, Porter, Southern Cook, Southern Will, Winnebago Including the cities of Downers Grove, Sycamore, Plano, Kankakee, Minooka, Schaumburg, Dixon, Oak Lawn, Calumet City, Valparaiso, Bolingbrook, Bourbonnais, Oak Forest, Yorkville, Gurnee, Buffalo Grove, Chicago, Manhattan, Carol Stream, Belvidere, Lombard, La Salle, Palatine, Merrillville, Crete, Hammond, Elgin, DeKalb, Chesterton, Cicero, Plainfield, La Grange, Naperville, Wheaton, Portage, Bradley, Mendota, Crystal Lake, McHenry, Channahon, Lemont, Morris, Park Forest, Woodstock, Joliet, Mokena, Byron, Coal City, Rochelle, Gary, Peotone, Mundelein, Rockford, Marseilles, Oregon, Ottawa, Waukegan, Des Plaines, Streator, Wilmington, Beecher, Evanston, Algonquin, Northbrook, Orland Park, Aurora, Oswego, and Oak Park