Flood Watch

Locations Affected

Chicago, IL ∙ Naperville, IL ∙ Aurora, IL ∙ Joliet, IL ∙ Elgin, IL ∙ Cicero, IL ∙ Hammond, IN ∙ Arlington Heights, IL ∙ Bolingbrook, IL ∙ Gary, IN

Full Alert Message

Flood Watch National Weather Service Chicago IL 1208 PM CDT Sat Jul 26 2025 ...FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of Illinois, including the following areas, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane, Kendall, La Salle, Lee, Northern Cook, Northern Will, Ogle, Southern Cook and Southern Will and northwest Indiana, including the following area, Lake IN. * WHEN...Until 7 PM CDT this evening. * 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. Storm drains and ditches may be clogged with debris, increasing the risk of flooding. Additionally, flooding of basements may occur if thunderstorms train over urban areas. * ADDITIONAL DETAILS... - Scattered thunderstorms this afternoon may produce torrential rainfall. The strongest thunderstorms will support rain rates in excess of 2 inches per hour, leading to a threat for flash flooding. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the latest forecasts and be prepared to take quick action should flooding develop.

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