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 Warning issued April 20 at 5:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Mon April 20, 2026, 5:00 AM
Expires: Mon April 20, 2026, 5:00 PM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Milwaukee River Near Cedarburg affecting Ozaukee County. Rock River At Newville affecting Rock County. Rock River Near Lake Koshkonong affecting Jefferson and Rock Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Winnebago and Rock Counties. Rock River At Jefferson affecting Jefferson County. Rock River At Watertown affecting Jefferson County. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. Fox River Near Berlin affecting Green Lake County. Crawfish River At Milford affecting Jefferson County. Fox River Lower At Waukesha affecting Waukesha County. Fox River Lower Near New Munster affecting Lake and Kenosha Counties. Pecatonica River At Martintown affecting Green County. Wisconsin River At Portage affecting Columbia County. ...The Flood Warning is extended for the following rivers in Illinois...Wisconsin... Sugar River At Brodhead affecting Winnebago, Rock and Green Counties. * WHAT...Major flooding is occurring and major flooding is forecast. * WHERE...Fox River Lower near New Munster. * WHEN...Until further notice. * IMPACTS...At 15.0 feet, Highway 50 is closed due to floodwaters over the highway. There is widespread flooding in the Town of Wheatland and Village of Salem Lakes. Floodwaters are into the lower levels of some homes in those areas along Riverside Drive, Shorewood Drive, 101st Street and Shorewood Terrace. * ADDITIONAL DETAILS... - At 4:00 AM CDT Monday the stage was 14.9 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Monday was 15.0 feet. - Forecast...The river is expected to rise to a crest of 14.9 feet this morning. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 15.0 feet on 08/24/2007. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Even 6 inches of fast-moving flood water can knock you off your feet and a depth of 2 feet will float your car. Never try to walk, swim, or drive through such swift water. If you come upon flood waters, stop, turn around and go another way. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Additional information is available at www.weather.gov. The next statement will be issued this afternoon at 500 PM CDT.

Flood Warning issued April 20 at 11:14AM CDT by NWS Milwaukee/Sullivan WI

Effective: Mon April 20, 2026, 11:14 AM
Expires: Mon April 20, 2026, 11:15 PM

...The Flood Warning is extended for the following rivers in Wisconsin...Illinois... Fox River At Princeton affecting Green Lake County. Sugar River At Brodhead affecting Green, Rock and Winnebago Counties. ...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Fox River Lower At Waukesha affecting Waukesha County. Wisconsin River At Portage affecting Columbia County. Rock River At Newville affecting Rock County. Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Rock and Winnebago Counties. Rock River At Jefferson affecting Jefferson County. Rock River At Watertown affecting Jefferson County. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. Fox River Near Berlin affecting Green Lake County. Crawfish River At Milford affecting Jefferson County. Fox River Lower Near New Munster affecting Lake and Kenosha Counties. ...The Flood Warning is cancelled for the following rivers in Wisconsin... Milwaukee River Near Cedarburg affecting Ozaukee County. Pecatonica River At Martintown affecting Green County. * WHAT...Major flooding is occurring and major flooding is forecast. * WHERE...Fox River Lower near New Munster. * WHEN...Until further notice. * IMPACTS...At 15.0 feet, Highway 50 is closed due to floodwaters over the highway. There is widespread flooding in the Town of Wheatland and Village of Salem Lakes. Floodwaters are into the lower levels of some homes in those areas along Riverside Drive, Shorewood Drive, 101st Street and Shorewood Terrace. * ADDITIONAL DETAILS... - At 10:00 AM CDT Monday the stage was 14.8 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 AM CDT Monday was 15.0 feet. - Forecast...The river is expected to fall to 11.3 feet Monday, April 27. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 15.0 feet on 08/24/2007. - http://www.weather.gov/safety/flood

Even 6 inches of fast-moving flood water can knock you off your feet and a depth of 2 feet will float your car. Never try to walk, swim, or drive through such swift water. If you come upon flood waters, stop, turn around and go another way. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov. The next statement will be issued this afternoon at 1215 PM CDT.

Flood Warning issued April 19 at 8:16PM CDT by NWS Chicago IL

Effective: Sun April 19, 2026, 8:16 PM
Expires: Mon April 20, 2026, 2:30 PM

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Cook and Lake IL Counties. Des Plaines River near Des Plaines affecting Cook County. Des Plaines River near Russell affecting Lake IL County. Des Plaines River near Gurnee affecting Lake IL County. * WHAT...Moderate flooding is occurring and forecasted to continue. * WHERE...Des Plaines River from Townline Road in Libertyville downstream to Palatine Road in Prospect Heights, including the Lincolnshire gauge. * WHEN...Until further notice. * IMPACTS...At 15.0 feet, Structures threatened along IL-22 (Half-Day Road) just east of the river. Multiple structures threatened near and west of US-45 (Milwaukee Avenue) and Deerfield Road. Deerfield Road threatened near the river. Multiple trails inundated in Half-Day Forest Preserve. * ADDITIONAL DETAILS... - At 7:45 PM CDT Sunday the stage was 15.1 feet. - Forecast...The river appears close to cresting. It is expected to remain near 15.1 to 15.2 feet through the next 24 hours before gradually falling thereafter. It is expected to remain above flood stage through the week. - Flood stage is 12.5 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 almost entirely on observed precipitation as little to no additional precipitation is currently expected over the next 24 to 48 hours. Additional information is available at www.weather.gov. The next statement will be issued by Monday afternoon.

Flood Warning issued April 19 at 8:16PM CDT by NWS Chicago IL

Effective: Sun April 19, 2026, 8:16 PM
Expires: Mon April 20, 2026, 2:30 PM

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Cook and Lake IL Counties. Des Plaines River near Des Plaines affecting Cook County. Des Plaines River near Russell affecting Lake IL County. Des Plaines River near Gurnee affecting Lake IL County. * WHAT...Moderate flooding is occurring and forecasted to continue. * WHERE...Des Plaines River from IL/WI state line downstream to US-41 in Gurnee, including the Russell gauge. * WHEN...Until further notice. * IMPACTS...At 9.5 feet, Residential structures threatened along Russell Road between the river and Kilbourne Road. Industrial parking lots threatened along Kilbourne Road. * ADDITIONAL DETAILS... - At 7:30 PM CDT Sunday the stage was 9.6 feet. - Forecast...The river appears to be close to cresting. It is expected to begin falling by tomorrow afternoon, but will remain above flood stage through much of the week. - Flood stage is 7.0 feet. - Flood History...This crest compares to a previous crest of 9.7 feet on 04/02/1960. - 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 almost entirely on observed precipitation as little to no additional precipitation is currently expected over the next 24 to 48 hours. Additional information is available at www.weather.gov. The next statement will be issued by Monday afternoon.

Flood Warning issued April 19 at 8:16PM CDT by NWS Chicago IL

Effective: Sun April 19, 2026, 8:16 PM
Expires: Mon April 20, 2026, 2:30 PM

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Cook and Lake IL Counties. Des Plaines River near Des Plaines affecting Cook County. Des Plaines River near Russell affecting Lake IL County. Des Plaines River near Gurnee affecting Lake IL County. * WHAT...Moderate flooding is occurring and forecasted to continue. * WHERE...Des Plaines River from US-41 in Gurnee downstream to Townline Road in Vernon Hills, including the Gurnee gauge. * WHEN...Until further notice. * IMPACTS...At 11.0 feet, US-41 (Skokie Highway) threatened near the river in Gurnee. Mundelein Water Reclamation Facility property is threatened near Libertyville. * ADDITIONAL DETAILS... - At 7:30 PM CDT Sunday the stage was 10.7 feet. - Forecast...The river appears to have crested. It will continue gradually falling, but will remain above flood stage through much of the week. - 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 almost entirely on observed precipitation as little to no additional precipitation is currently expected over the next 24 to 48 hours. Additional information is available at www.weather.gov. The next statement will be issued by Monday afternoon.