Station Name: Winthrop Harbor Buoy, IL
Station Type: Buoy
Data Source: National Data Buoy Center

Elevation Above Sea Level: 574 feet

Nearest Address:
Offshore
Winthrop Harbor, IL 60096
Lake County

GPS Coordinates: 42.491, -87.779

Nearby Water Temperatures

Flood Watch issued April 10 at 4:44AM CDT until April 14 at 1:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Fri April 10, 2026, 4:44 AM
Expires: Fri April 10, 2026, 12:45 PM

...The National Weather Service in Milwaukee/Sullivan WI has issued a Flood Watch for the following rivers in Wisconsin...Illinois... Fox River Lower Near New Munster affecting Lake and Kenosha Counties. * WHAT...Flooding is possible. * WHERE...Fox River Lower near New Munster. * WHEN...From early this morning to early Tuesday morning. * IMPACTS...At 11.0 feet, Floodwaters begin to affect 77th St. in the Town of Wheatland. Floodwaters are near some homes along Riverside Dr, Shorewood Dr, and Highway W in the Village of Salem Lakes and Town of Wheatland areas. Fox River Park boat launch starts to flood. * ADDITIONAL DETAILS... - At 4:00 AM CDT Friday the stage was 10.5 feet. - Forecast...Flood stage may be reached early tomorrow afternoon. - Flood stage is 11.0 feet. - http://www.weather.gov/safety/flood

If you are in the watch area, remain alert to possible flooding. Additional information is available at www.weather.gov. The next statement will be issued this afternoon at 1245 PM CDT.

Flood Warning issued April 9 at 9:12PM CDT by NWS Chicago IL

Effective: Thu April 9, 2026, 9:12 PM
Expires: Fri April 10, 2026, 3:15 PM

...The Flood Warning continues for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting Kane, McHenry and Lake IL Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until further notice. * IMPACTS...At 10.0 feet, Winaki Trail and Onaway Trail are threatened south of Algonquin. Athletic fields inundated at Judson College in Elgin. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 9.8 feet. - Forecast...The river is expected to slowly rise to just above 10 feet by Friday afternoon and evening before gradually falling into next week. - Flood stage is 9.5 feet. - http://www.weather.gov/safety/flood

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 by Friday afternoon.

Flood Watch issued April 9 at 9:10PM CDT until April 12 at 1:00AM CDT by NWS Chicago IL

Effective: Thu April 9, 2026, 9:10 PM
Expires: Fri April 10, 2026, 3:15 PM

...The Flood Watch continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Northern Cook and Lake IL zones. For the Des Plaines River...including Lincolnshire...flooding is possible. * WHAT...Flooding is possible. * WHERE...Des Plaines River from Townline Road in Libertyville downstream to Palatine Road in Prospect Heights, including the Lincolnshire gauge. * WHEN...Until early Sunday morning. * IMPACTS...At 13.0 feet, Low-lying trails in Wright Woods Forest Preserve are inundated. * ADDITIONAL DETAILS... - At 8:45 PM CDT Thursday the stage was 12.3 feet. - Forecast...The river may rise to rise to a crest near flood stage Friday evening or Saturday morning after additional rainfall tonight. - Flood stage is 12.5 feet. - http://www.weather.gov/safety/flood

A Flood Watch means water levels above flood stage are possible, but not yet certain, based upon the latest forecasts. Persons along rivers and streams in the watch area should monitor the latest forecasts and be prepared to take action should flooding develop. 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 by Friday afternoon.

Flood Warning issued April 9 at 9:10PM CDT until April 13 at 1:00PM CDT by NWS Chicago IL

Effective: Thu April 9, 2026, 9:10 PM
Expires: Fri April 10, 2026, 3:15 PM

...The Flood Warning is extended for the following rivers in Illinois... Des Plaines River near Gurnee affecting Lake IL County. Des Plaines River near Russell affecting Lake IL County. For the Des Plaines River...including Russell, Gurnee...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Des Plaines River from US-41 in Gurnee downstream to Townline Road in Vernon Hills, including the Gurnee gauge. * WHEN...Until early Monday afternoon. * IMPACTS...At 9.0 feet, Kilbourne Road and Emerald Avenue threatened near Grand Avenue in Gurnee. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 8.0 feet. - Forecast...The river may remain near 8 feet through Friday night before slowly falling over the weekend. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood

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 by Friday afternoon.

Flood Warning issued April 9 at 9:10PM CDT until April 13 at 7:00PM CDT by NWS Chicago IL

Effective: Thu April 9, 2026, 9:10 PM
Expires: Fri April 10, 2026, 3:15 PM

...The Flood Warning is extended for the following rivers in Illinois... Des Plaines River near Gurnee affecting Lake IL County. Des Plaines River near Russell affecting Lake IL County. For the Des Plaines River...including Russell, Gurnee...Minor flooding is forecast. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Des Plaines River from IL/WI state line downstream to US-41 in Gurnee, including the Russell gauge. * WHEN...Until Monday evening. * IMPACTS...At 8.0 feet, Agricultural and park land is inundated near the river. Residential property is threatened near the river. * ADDITIONAL DETAILS... - At 8:30 PM CDT Thursday the stage was 7.7 feet. - Forecast...The river is expected to continue gradually falling over the next day or two, and fall below flood stage sometime over the weekend. - Flood stage is 7.0 feet. - http://www.weather.gov/safety/flood

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 by Friday afternoon.