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    Warnings - South Holland

    World / United States / Illinois / South Holland

    41°36'N / 87°36'W / Altitude 183 m / 21:06 2026/08/01, America/Chicago (UTC-5)

    flood

    Flood Warning issued August 1 at 2:44PM CDT until August 2 at 9:00AM CDT by NWS Chicago IL

    From: 2026/08/01, 15:36
    To: 2026/08/02, 09:00

    ...The National Weather Service in Chicago has issued a Flood Warning for the following rivers in Illinois... Thorn Creek at Thornton affecting Cook County. For the Thorn Creek...including Thornton...Minor flooding is forecast. * WHAT...Minor flooding is forecast. * WHERE...Thorn Creek from Near Glenwood downstream to confluence with Little Calumet River, including the Thornton gauge. * WHEN...Until Sunday morning. * IMPACTS...At 9.0 feet, Water begins to be diverted through Thorn Creek Diversion Tunnel. * ADDITIONAL DETAILS... - At 2:15 PM CDT Saturday the stage was 8.6 feet. - Forecast...The river is expected to rise above flood stage late this afternoon to a crest of 10.0 feet this evening. It will then fall below flood stage late tonight. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood

    • Cook, IL
    • A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts. Additional information is available at www.weather.gov. The next statement will be issued Sunday morning at 900 AM CDT.
    • NWS Chicago IL
    • 2026/08/01, 14:44
    flood

    Flood Warning issued August 1 at 7:44PM CDT until August 1 at 11:45PM CDT by NWS Chicago IL

    From: 2026/08/01, 19:44
    To: 2026/08/01, 23:45

    * WHAT...Flooding caused by earlier excessive rainfall continues. * WHERE...Southeastern Cook County in northeastern Illinois... Central Will County in northeastern Illinois... Northwestern Lake IN County in northwestern Indiana... * WHEN...Until 1145 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 739 PM CDT, Doppler radar and automated rain gauges indicated that very heavy rainfall occurred across the warned area earlier. Up to 3 inches of rain fell in the past 3 to 6 hours. - Some locations that will experience flooding include... Hammond, Gary, Tinley Park, Calumet City, Chicago Heights, East Chicago, Lansing, Oak Forest, Harvey, Highland, Munster, Dolton, Park Forest, Homewood, Matteson, Mokena, Frankfort, and South Holland. - http://www.weather.gov/safety/flood

    • Cook, IL; Will, IL; Lake, IN
    • A Flood Warning means flooding is imminent or may already be occurring. Persons along rivers, creeks, and other waterways should take immediate precautions to protect life and property. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads.
    • NWS Chicago IL
    • 2026/08/01, 19:44
    other

    Beach Hazards Statement issued August 1 at 3:43PM CDT until August 3 at 9:00AM CDT by NWS Chicago IL

    From: 2026/08/01, 15:43
    To: 2026/08/01, 23:45

    * WHAT...High wave action and dangerous currents expected at Lake Michigan beaches. Waves 6 to 9 ft expected. * WHERE...Lake IL, Northern Cook and Central Cook Counties. * WHEN...Through Monday morning. * IMPACTS...Swimming conditions will be life threatening, especially for inexperienced swimmers. For information on swim advisories or bans at Chicago beaches: www. cpdbeaches. com.

    • Cook
    • Remain out of the water to avoid dangerous swimming conditions and do not venture out onto piers, jetties, breakwalls, or other shoreline structures.
    • NWS Chicago IL
    • 2026/08/01, 15:43
    flood

    Flood Advisory issued August 1 at 7:00PM CDT until August 2 at 1:00AM CDT by NWS Chicago IL

    From: 2026/08/01, 19:00
    To: 2026/08/02, 01:00

    * WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Southeastern Cook County in northeastern Illinois... Southeastern DuPage County in northeastern Illinois... Will County in northeastern Illinois... Northern Lake IN County in northwestern Indiana... * WHEN...Until 100 AM 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 656 PM CDT, Doppler radar and automated rain gauges indicated light to moderate rain occurring in areas where heavy rainfall occurred earlier. Minor flooding is ongoing or expected to begin shortly in the advisory area. - Some locations that will experience flooding include... Chicago, Joliet, Hammond, Gary, Bolingbrook, Orland Park, Tinley Park, Oak Lawn, Romeoville, Plainfield, Calumet City, Merrillville, Woodridge, Chicago Heights, Roseland, Chicago Lawn, Englewood, and South Shore. - http://www.weather.gov/safety/flood

    • Cook, IL; DuPage, IL; Will, IL; Lake, IN
    • 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.
    • NWS Chicago IL
    • 2026/08/01, 19:00