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 10:25PM CDT by NWS Milwaukee/Sullivan WI

Effective: Sat April 18, 2026, 10:25 PM
Expires: Sun April 19, 2026, 10:30 AM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Fox River Lower At Waukesha affecting Waukesha County. Fox River Lower Near New Munster affecting Kenosha and Lake 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 10:00 PM CDT Saturday the stage was 15.0 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 10:00 PM CDT Saturday was 15.0 feet. - Forecast...The river is expected to rise to a crest of 15.5 feet tomorrow evening. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 15.2 feet on 06/15/2008. - http://www.weather.gov/safety/flood

Motorists should not attempt to drive around barricades or drive cars through flooded areas. 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. 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 Sunday morning at 1030 AM CDT.

Flood Warning issued April 19 at 5:01AM CDT by NWS Milwaukee/Sullivan WI

Effective: Sun April 19, 2026, 5:01 AM
Expires: Sun April 19, 2026, 5:15 PM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Milwaukee River Near Cedarburg affecting Ozaukee County. Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties. Rock River At Fort Atkinson affecting Jefferson County. Rock River At Afton affecting Winnebago and Rock Counties. Baraboo River Near Baraboo affecting Columbia and Sauk 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. Root River Canal At Raymond affecting Racine County. Sugar River At Brodhead affecting Winnebago, Green and Rock Counties. Wisconsin River At Portage affecting Columbia County. ...The Flood Warning is cancelled for the following rivers in Wisconsin... Root River At Franklin affecting Milwaukee 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 4:00 AM CDT Sunday the stage was 15.0 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Sunday was 15.0 feet. - Forecast...The river will rise to 15.5 feet this evening. It will then fall this evening. It will rise to 15.5 feet early tomorrow afternoon. It will then fall again but remain above flood stage. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 15.2 feet on 06/15/2008. - 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 morning at 615 AM CDT.

Flood Warning issued April 18 at 8:40PM CDT by NWS Chicago IL

Effective: Sat April 18, 2026, 8:40 PM
Expires: Sun April 19, 2026, 2:45 PM

...The Flood Warning continues for the following rivers in Illinois... Fox River at Dayton affecting La Salle County. Fox River at Montgomery affecting Kane and Kendall Counties. Fox River at Algonquin Lock & Dam tailwater affecting Kane, McHenry and Lake IL Counties. * WHAT...Moderate flooding is occurring and forecasted to continue. * 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 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 7:30 PM CDT Saturday the stage was 11.2 feet. - Forecast...The river is expected to continue gradually rising into next week. At this point, it is expected to remain just below Major Flood Stage. - 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 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 Sunday afternoon.

Flood Warning issued April 18 at 8:35PM CDT by NWS Chicago IL

Effective: Sat April 18, 2026, 8:35 PM
Expires: Sun April 19, 2026, 2:45 PM

...The Flood Warning is extended for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Cook and Lake IL Counties. ...The Flood Warning continues for the following rivers in Illinois... 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 Saturday the stage was 10.6 feet. - Forecast...The river is expected to rise to a crest near 10.9 feet tomorrow morning, just below Major Flood Stage. It is then expected to fall through next 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 Sunday afternoon.

Flood Warning issued April 18 at 8:35PM CDT by NWS Chicago IL

Effective: Sat April 18, 2026, 8:35 PM
Expires: Sun April 19, 2026, 2:45 PM

...The Flood Warning is extended for the following rivers in Illinois... Des Plaines River at Lincolnshire affecting Cook and Lake IL Counties. ...The Flood Warning continues for the following rivers in Illinois... 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 Saturday the stage was 9.6 feet. - Forecast...The river is expected to remain nearly steady through tomorrow before gradually falling next 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 Sunday afternoon.