Flood Watch

Locations Affected

Chicago, IL ∙ Aurora, IL ∙ Joliet, IL ∙ Rockford, IL ∙ Naperville, IL ∙ Elgin, IL ∙ Waukegan, IL ∙ Cicero, IL ∙ Arlington Heights, IL ∙ Bolingbrook, IL

Full Alert Message

URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Chicago IL 220 AM CDT Wed Jun 17 2026 ...FLOOD WATCH IN EFFECT FROM 10 AM CDT /11 AM EDT/ THIS MORNING THROUGH THIS EVENING... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Illinois, including the following counties, in Illinois, Cook, DuPage, Will, Ford, Grundy, Iroquois, Kane, Kankakee, Kendall, La Salle, Lake IL, and Livingston. In Indiana this flood watch includes the Benton, Jasper, Lake IN, Newton and Porter Counties. * WHEN...From 10 AM CDT this morning through this evening. * IMPACTS...Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - Showers and thunderstorms are expected today. Rain may be heavy at times, with the strongest storms capable of torrential rainfall which could drop up to 2 inches of rain in just an hour's time in the hardest hit areas. Soil moisture is already quite high and stream flows elevated, so heavy rainfall could quickly result in flash flooding of streams, creeks, low lying, and flood prone areas. - http://www.weather.gov/safety/flood 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.

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