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 10:06AM 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 18 at 3:56PM CDT by NWS Milwaukee/Sullivan WI

Effective: Sat April 18, 2026, 3:56 PM
Expires: Sun April 19, 2026, 4:00 AM

...The Flood Warning is extended for the following rivers in Wisconsin... Milwaukee River Near Cedarburg affecting Ozaukee County. Root River At Racine affecting Racine County. Root River Canal At Raymond affecting Racine County. ...The Flood Warning continues for the following rivers in Wisconsin...Illinois... 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. 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 Kenosha and Lake Counties. Pecatonica River At Martintown affecting Green County. Root River At Franklin affecting Milwaukee County. Sugar River At Brodhead affecting Rock, Winnebago and Green Counties. Turtle Creek Near Clinton affecting Rock and Winnebago Counties. Wisconsin River At Portage affecting Columbia County. * WHAT...Major flooding is occurring and major flooding is forecast. * WHERE...Fox River Lower near New Munster. * WHEN...Until further notice. * IMPACTS...At 16.0 feet, Many county highways are closed or impassable. Highway 50 is closed. There is widespread flooding in the Town of Wheatland and Village of Salem Lakes, including Trevor. Some homes near the riverhave 1-2 ft of water on their main levels. * ADDITIONAL DETAILS... - At 3:00 PM CDT Saturday the stage was 14.8 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:00 PM CDT Saturday was 14.8 feet. - Forecast...The river is expected to rise to a crest of 15.8 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

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 evening at 1145 PM CDT.

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 18 at 12:44PM CDT by NWS Chicago IL

Effective: Sat April 18, 2026, 12:44 PM
Expires: Sun April 19, 2026, 6:45 AM

...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, McHenry and Kane Counties. * 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 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 11:30 AM CDT Saturday the stage was 11.1 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 11:30 AM CDT Saturday was 11.2 feet. The river climbed overnight due to rainfall yesterday. - Forecast...The river is expected to rise to near 11.5 feet by tomorrow. The river will then slowly climb to a crest near 11.8 feet next Wednesday. - 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 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 morning.

Flood Warning issued April 18 at 12:16PM CDT until April 23 at 7:00AM CDT by NWS Chicago IL

Effective: Sat April 18, 2026, 12:16 PM
Expires: Sun April 19, 2026, 6:30 AM

...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 Russell affecting Lake IL County. ...The Flood Warning is extended for the following rivers in Illinois... Des Plaines River near Gurnee affecting Lake IL County. * WHAT...Moderate flooding is occurring and major flooding is forecast. * WHERE...Des Plaines River from Townline Road in Libertyville downstream to Palatine Road in Prospect Heights, including the Lincolnshire gauge. * WHEN...Until Thursday morning. * IMPACTS...At 16.0 feet, Numerous structures threatened along US-45 (Milwaukee Avenue) between IL-22 (Half Day Road) and Deerfield Road. Access route threatened for numerous residences near US-45 (Milwaukee Avenue) and Deerfield Road. IL-60 (Townline Road) threatened near the river. * ADDITIONAL DETAILS... - At 11:45 AM CDT Saturday the stage was 14.8 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 11:45 AM CDT Saturday was 14.8 feet. The river has been climbing due to rainfall yesterday evening. - Forecast...The river is expected to rise to a crest near 15.8 feet tomorrow. - Flood stage is 12.5 feet. - Flood History...This crest compares to a previous crest of 15.8 feet on 05/18/2020. - 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 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 morning.