Active Weather Alerts
Flood Advisory
Issued: 5:04 PM Aug. 11, 2026 – National Weather Service
...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 130 PM CDT THIS AFTERNOON... * WHAT...Flooding caused by excessive rainfall continues. * WHERE...Southeastern Cook County in northeastern Illinois... Southern DuPage County in northeastern Illinois... Northeastern Kankakee County in northeastern Illinois... Will County in northeastern Illinois... * WHEN...Until 130 PM 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 1202 PM CDT, Doppler radar and automated rain gauges indicated up to 2.0 inches of rain occurred due to earlier thunderstorms. Heavy rainfall has moved out of the area, but some standing water may be slow to recede over the next few hours. A few streams may continue to rise as runoff moves downstream. - Flooding impacts will continue, but no additional rainfall is expected. - Some locations that will experience flooding include... Chicago, Aurora, Joliet, Naperville, Cicero, Bolingbrook, Orland Park, Tinley Park, Oak Lawn, Berwyn, Wheaton, Downers Grove, Lombard, Romeoville, Plainfield, Calumet City, Woodridge and Chicago Heights. - 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. &&
Lakeshore Flood Warning
Issued: 4:24 PM Aug. 11, 2026 – National Weather Service
...LAKESHORE FLOOD WARNING IN EFFECT UNTIL 5 PM CDT THIS AFTERNOON... * WHAT...Lakeshore Flood Warning. * WHERE...Central and Southern Cook County Illinois, Lake County Indiana, and Cook County Indiana. * WHEN...Through 5pm this Evening. * IMPACTS...FORECAST WAVE HEIGHTS... 3 to 6 feet, with significant, rapid water level fluctuations with potential to flood areas along the lakeshore multiple feet deep. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Lakeshore Flood Warning means that flooding is occurring or imminent along the lake. Residents on or near the shore in the warned area should be alert for rising water, and take appropriate action to protect life and property. &&
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