Severe · Flood WatchActive alert
Flood Watch issued September 19 at 10:34AM CDT until September 20 at
Affecting Boone; Lake; Ogle; Lee; De Kalb; Kane; DuPage; Kendall; Northern Cook; Central Cook; Southern Cook; Northern Will; Lake; Porter
In effect until: Sep 19, 2026, 11:45 PM
Boone; Lake; Ogle; Lee; De Kalb; Kane; DuPage; Kendall; Northern Cook; Central Cook; Southern Cook; Northern Will; Lake; Porter
Possible impact zone; conditions develop through 11:45 PM.
Avoid flooded areas. Move to higher ground if water is rising near you.
Read the original bulletin (official text)
* 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, Kane, Kendall, Lake IL, Lee, Northern Cook, Northern Will, Ogle and Southern Cook and northwest Indiana, including the following areas, Lake IN and Porter. * WHEN...Through early Sunday morning. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Roads and streets may be flooded. * ADDITIONAL DETAILS... - An additional round of showers and thunderstorms, some with very heavy rainfall, are expected this evening and overnight which may result in areas of flash flooding, particularly over urban or areas of poor drainage. - http://www.weather.gov/safety/flood
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™