Od: 20.09.2026, 01:33
Do: 20.09.2026, 09:45

* 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

Od: 20.09.2026, 07:00
Do: 20.09.2026, 11:30

* WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 7 to 10 feet expected. * WHERE...Lake IL, Northern Cook and Central Cook Counties. * WHEN...From 7 AM CDT this morning through Tuesday evening. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers.