Active Weather Alerts
Flood Advisory
Issued: 7:09 PM Aug. 9, 2026 – National Weather Service
...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 345 PM CDT THIS AFTERNOON... * WHAT...Flooding caused by excessive rainfall continues. * WHERE...Lake IL County in northeastern Illinois... Southeastern McHenry County in northeastern Illinois... * WHEN...Until 345 PM CDT. * 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. * ADDITIONAL DETAILS... - At 209 PM CDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 2 inches of rain have fallen. - Some locations that will experience flooding include... Waukegan, Buffalo Grove, Crystal Lake, North Chicago, Gurnee, Mundelein, Algonquin, Highland Park, Lake in the Hills, Round Lake Beach, McHenry, Vernon Hills, Zion, Huntley, Grayslake, Libertyville and Lake Zurich. - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... A 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. &&
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