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

Special Weather Statement issued May 4 at 1:33AM CDT by NWS Milwaukee/Sullivan WI

Effective: Mon May 4, 2026, 1:33 AM
Expires: Mon May 4, 2026, 7:00 PM

Warm, dry and breezy conditions today will lead to an elevated concern for fire weather across southern WI. Given recent rains and green up largely being complete, it is not thought that fuels are at a near critical level but the weather conditions are. Highs in the upper 70s, relative humidities falling to the 20-30 percent range and sustained winds around 15-20 mph with gusts to 35 mph all contribute to the increased fire weather concerns.

Flood Warning issued May 4 at 9:29AM CDT until May 5 at 7:00PM CDT by NWS Chicago IL

Effective: Mon May 4, 2026, 9:29 AM
Expires: Tue May 5, 2026, 3:30 AM

...The Flood Warning is extended for the following rivers in Illinois... Fox River at Algonquin Lock & Dam tailwater affecting Kane, McHenry and Lake IL Counties. For the Fox River (Illinois)...including Algonquin Lock & Dam tailwater...Minor flooding is forecast. * WHAT...Minor flooding is occurring and forecasted to occur. * WHERE...Fox River from Johnsburg downstream to Red Gate Road in St. Charles, including the Algonquin Lock & Dam tailwater gauge. * WHEN...Until tomorrow evening. * IMPACTS...At 10.0 feet, Winaki Trail and Onaway Trail are threatened south of Algonquin. Athletic fields inundated at Judson College in Elgin. * ADDITIONAL DETAILS... - At 8:30 AM CDT Monday the stage was 9.8 feet. - Forecast...The river is expected to fall below flood stage early tomorrow afternoon and continue falling to 7.9 feet Monday, May 11. - Flood stage is 9.5 feet. - Flood History...This crest compares to a previous crest of 9.4 feet on 07/18/2024. - http://www.weather.gov/safety/flood

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. 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. Additional information is available at www.weather.gov. The next statement will be issued by late tonight.