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 18 at 5:27AM CDT by NWS Milwaukee/Sullivan WI

Effective: Sat April 18, 2026, 5:27 AM
Expires: Sat April 18, 2026, 5:30 PM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Baraboo River Near Baraboo affecting Sauk and Columbia 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. Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties. 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 Kenosha and Lake Counties. Milwaukee River Near Cedarburg affecting Ozaukee County. Pecatonica River At Martintown affecting Green County. Root River Canal At Raymond affecting Racine County. Turtle Creek Near Clinton affecting Rock and Winnebago Counties. Wisconsin River At Portage affecting Columbia County. ...The Flood Warning is cancelled for the following rivers in Wisconsin... Wisconsin River At Wisconsin Dells affecting Sauk and Columbia 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 Saturday the stage was 14.4 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Saturday was 14.4 feet. - Forecast...The river is expected to rise to a crest of 15.0 feet early tomorrow afternoon. - 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

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. 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. Additional information is available at www.weather.gov. The next statement will be issued this morning at 630 AM CDT.

Flood Warning issued April 18 at 10:06AM CDT by NWS Milwaukee/Sullivan WI

Effective: Sat April 18, 2026, 10:06 AM
Expires: Sat April 18, 2026, 10:15 PM

...The Flood Warning is extended for the following rivers in Wisconsin... Baraboo River Near Baraboo affecting Sauk and Columbia Counties. Pecatonica River At Martintown affecting Green County. Wisconsin River At Portage affecting Columbia County. ...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Root River At Racine affecting Racine County. Sheboygan River At Sheboygan affecting Sheboygan 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 At Waukesha affecting Waukesha County. Fox River Lower Near New Munster affecting Lake and Kenosha Counties. Milwaukee River Near Cedarburg affecting Ozaukee County. Root River Canal At Raymond affecting Racine County. ...Observed flooding changed from Minor to Moderate severity and increased in duration for the following rivers in Illinois... Wisconsin... Sugar River At Brodhead affecting Rock, Winnebago 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 9:00 AM CDT Saturday the stage was 14.6 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 AM CDT Saturday was 14.6 feet. - Forecast...The river is expected to rise to a crest of 15.0 feet early tomorrow afternoon. - 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

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. 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. Additional information is available at www.weather.gov. The next statement will be issued this evening at 1015 PM CDT.

Flood Warning issued April 17 at 11:24PM CDT by NWS Chicago IL

Effective: Fri April 17, 2026, 11:24 PM
Expires: Sat April 18, 2026, 5:30 PM

...The Flood Warning continues for the following rivers in Illinois... Fox River at Montgomery affecting Kendall and Kane Counties. Fox River at Algonquin Lock & Dam tailwater affecting Lake IL, Kane and McHenry Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater, Montgomery, Dayton...Moderate flooding is forecast. * WHAT...Moderate flooding is occurring and moderate 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 11.5 feet, Residences threatened along Oceola Drive in Algonquin. A few residences threatened along McBridge Street in Elgin. Jayne Street and Beach Drive threatened in Algonquin. River Street threatened in East Dundee. Jerusha Avenue threatened in Elgin. Fox River Trail threatened between East Dundee and Elgin. At 12.0 feet, Structures threatened along River Street, Johnson Street, and Maiden Lane in East Dundee. North Harrison Street threatened near Riverside Park in Algonquin. Washington Street threatened in Carpentersville. Water Street, Edwards Avenue, and Elgin Avenue threatened in East Dundee. Bayview Road threatened in Elgin. Low-lying areas of Festival Park are threatened in Elgin. * ADDITIONAL DETAILS... - At 10:30 PM CDT Friday the stage was 10.9 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:30 PM CDT Friday was 10.9 feet. The river has begun to rise due to recent rainfall. - Forecast...The river is now expected to crest near 11.5 to 12.0 feet late next week due to recent rainfall. - Flood stage is 9.5 feet. - Flood History...This crest compares to a previous crest of 11.8 feet on 05/23/2020. - 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 Saturday afternoon.

Flood Warning issued April 17 at 11:13PM CDT until April 24 at 11:01AM CDT by NWS Chicago IL

Effective: Fri April 17, 2026, 11:13 PM
Expires: Sat April 18, 2026, 5:15 PM

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River near Gurnee affecting Lake IL County. Des Plaines River at Lincolnshire affecting Cook and Lake IL Counties. * WHAT...Moderate flooding is occurring and moderate 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 Friday, April 24. * IMPACTS...At 10.0 feet, Residences threatened along Kilbourne Road and near O'Plaine Road and McClure Avenue in Gurnee. Businesses threatened along Old Grand Avenue near IL-132 in Gurnee. IL-132 (Grand Avenue) is threatened east of the river in Gurnee. * ADDITIONAL DETAILS... - At 10:30 PM CDT Friday the stage was 9.4 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:30 PM CDT Friday was 9.4 feet. The river has begun to rise due to recent rainfall. - Forecast...The river is expected to crest near 10.0 feet on Sunday. - Flood stage is 7.0 feet. - Flood History...This crest compares to a previous crest of 9.8 feet on 05/20/2020. - 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 Saturday afternoon.

Flood Warning issued April 18 at 1:33AM CDT by NWS Chicago IL

Effective: Sat April 18, 2026, 1:33 AM
Expires: Sat April 18, 2026, 7:45 PM

...The Flood Warning continues for the following rivers in Illinois... Des Plaines River near Russell affecting Lake IL County. For the Des Plaines River...including Russell...Moderate flooding is forecast. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * 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 8.0 feet, Agricultural and park land is inundated near the river. Residential property is threatened near the river. 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 12:30 AM CDT Saturday the stage was 9.2 feet. - Recent Activity...Recent rainfall caused the river level to jump quickly from 8.7 feet this morning to now over 9 feet. - Forecast...The river is expected to crest at just over 9 feet early Saturday before gradually falling over the next few days. - 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 this evening.