42°12'N / 88°12'W / Wysokość 243 m / 06:18 20.09.2026, America/Chicago (UTC-5)
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
McHenry,McHenry
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.
NWS Chicago IL
20.09.2026, 01:33
Od: 20.09.2026, 04:30
Do: 20.09.2026, 08:00
* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Boone County in north central Illinois... Winnebago County in north central Illinois... McHenry County in northeastern Illinois... * WHEN...Until 800 AM CDT. * 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... - At 428 AM CDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Up to 1 inch of rain has fallen. - Additional rainfall amounts of 1 to 2 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Rockford, Crystal Lake, Algonquin, Lake in the Hills, McHenry, Belvidere, Woodstock, Huntley, Loves Park, Machesney Park, Roscoe, Fox Lake, Harvard, Island Lake, South Beloit, Rockton, Marengo, Poplar Grove, Rockford Airport, Cary, Johnsburg, Lakemoor, Spring Grove and Candlewick Lake. - http://www.weather.gov/safety/flood
Boone, IL; McHenry, IL; Winnebago, ILA Flood Advisory means minor flooding along waterways and other poor
drainage areas is imminent or may already be occurring. Persons in
the advisory area should use caution and avoid flood waters.
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.NWS Chicago IL20.09.2026, 04:30