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 15 at 11:19AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed April 15, 2026, 11:19 AM
Expires: Wed April 15, 2026, 11:30 PM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Fox River Lower Near New Munster affecting Kenosha and Lake Counties. * WHAT...Moderate flooding is forecast. * WHERE...Fox River Lower near New Munster. * WHEN...Until further notice. * IMPACTS...At 13.5 feet, Floodwaters are into the lower levels of some homes in the Town of Wheatland and Village of Salem Lakes areas along Riverside Drive and Shorewood Drive. * ADDITIONAL DETAILS... - At 11:00 AM CDT Wednesday the stage was 10.7 feet. - Bankfull stage is 10.0 feet. - Forecast...The river is expected to rise above flood stage late this afternoon and continue rising to a crest of 13.6 feet early Saturday morning. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 13.6 feet on 10/04/2019. - http://www.weather.gov/safety/flood

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 evening at 1130 PM CDT.

Flood Warning issued April 15 at 5:51PM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed April 15, 2026, 5:51 PM
Expires: Thu April 16, 2026, 6:00 AM

...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River At Watertown affecting Jefferson County. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. Fox River Lower Near New Munster affecting Kenosha and Lake Counties. Milwaukee River Near Cedarburg affecting Ozaukee County. Wisconsin River At Portage affecting Columbia County. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Fox River Lower near New Munster. * WHEN...Until further notice. * IMPACTS...At 13.5 feet, Floodwaters are into the lower levels of some homes in the Town of Wheatland and Village of Salem Lakes areas along Riverside Drive and Shorewood Drive. * ADDITIONAL DETAILS... - At 5:00 PM CDT Wednesday the stage was 11.0 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 5:00 PM CDT Wednesday was 11.0 feet. - Forecast...The river is expected to rise to a crest of 13.6 feet early Saturday morning. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 13.6 feet on 10/04/2019. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. 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 Thursday morning at 600 AM CDT.

Flood Watch issued April 15 at 1:52PM CDT until April 16 at 7:00AM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed April 15, 2026, 1:52 PM
Expires: Wed April 15, 2026, 10:00 PM

* WHAT...Areal flooding and flash flooding caused by excessive rainfall from thunderstorms is possible. * WHERE...Portions of east central, south central, and southeast Wisconsin, including the following counties, in east central Wisconsin, Fond du Lac and Sheboygan. In south central Wisconsin, Columbia, Dane, Green, Green Lake, Iowa, Lafayette, Marquette, Rock and Sauk. In southeast Wisconsin, Dodge, Jefferson, Kenosha, Milwaukee, Ozaukee, Racine, Walworth, Washington and Waukesha. * WHEN...Through Thursday morning. * IMPACTS...Excessive runoff and ponding of water may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - An additional 1 to 2 inches of rain may fall tonight with expected heavy rain from thunderstorms. This will cause additional chances for flash flooding, rises on creeks and streams, and will exacerbate river flooding over southern Wisconsin. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Flood Warning issued April 15 at 11:23PM CDT by NWS Milwaukee/Sullivan WI

Effective: Wed April 15, 2026, 11:23 PM
Expires: Thu April 16, 2026, 11:30 AM

...The Flood Warning is extended for the following rivers in Wisconsin... Milwaukee River Near Cedarburg affecting Ozaukee County. Wisconsin River At Portage affecting Columbia County. ...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River At Watertown affecting Jefferson County. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. Fox River Lower Near New Munster affecting Lake and Kenosha Counties. * WHAT...Minor flooding is occurring and moderate flooding is forecast. * WHERE...Fox River Lower near New Munster. * WHEN...Until further notice. * IMPACTS...At 13.5 feet, Floodwaters are into the lower levels of some homes in the Town of Wheatland and Village of Salem Lakes areas along Riverside Drive and Shorewood Drive. * ADDITIONAL DETAILS... - At 11:00 PM CDT Wednesday the stage was 11.4 feet. - Bankfull stage is 10.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 11:00 PM CDT Wednesday was 11.4 feet. - Forecast...The river is expected to rise to a crest of 13.6 feet early Saturday morning. - Flood stage is 11.0 feet. - Flood History...This crest compares to a previous crest of 13.6 feet on 10/04/2019. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. 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 Thursday morning at 1130 AM CDT.

Flood Watch issued April 16 at 1:08AM CDT until April 16 at 1:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Thu April 16, 2026, 1:08 AM
Expires: Thu April 16, 2026, 9:15 AM

...FLOOD WATCH EXTENDED IN SOUTHEASTERN AREAS... Additional shower and storm development is forecast through the overnight hours, with activity gradually tapering after sunrise this morning. Expecting that additional rainfall totals will remain at or below a half inch in many locations, though localized additional rainfall totals between 1-2 inches are possible in locations impacted by the heaviest thunderstorms and any repeated redevelopment. Given already saturated conditions, particularly over the southeast half of the region after last night's storms, this additional rainfall will lead to quick runoff and additional urban/small stream & potential flash flooding impacts. With thunderstorm potential most favored over far south-central and southeastern Wisconsin, the Flood Watch has thus been extended until 1 PM this afternoon from Rock, Jefferson, Washington, and all counties south and east to the Illinois border. Flood Watch remains in effect through 7 AM in areas further north and west. * WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of south central and southeast Wisconsin, including the following counties, in south central Wisconsin, Rock. In southeast Wisconsin, Jefferson, Kenosha, Milwaukee, Ozaukee, Racine, Walworth, Washington and Waukesha. * WHEN...Through this afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Flooding and flash flooding is possible from thunderstorms with heavy rain on saturated ground - http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.