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 Watch issued June 11 at 11:02AM CDT until June 11 at 11:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Thu June 11, 2026, 11:02 AM
Expires: Thu June 11, 2026, 7:15 PM

Several rounds of heavy rain are expected today and this evening. * WHAT...Flash flooding caused by excessive rainfall 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 this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Several rounds of heavy rain are expected today and this evening. - http://www.weather.gov/safety/flood

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

Flood Advisory issued June 11 at 6:57PM CDT until June 11 at 10:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Thu June 11, 2026, 6:57 PM
Expires: Thu June 11, 2026, 10:00 PM

* WHAT...Urban and small stream flooding caused by excessive rainfall is expected. * WHERE...A portion of southeast Wisconsin, including the following counties, Kenosha and Walworth. * WHEN...Until 1000 PM CDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 657 PM CDT, Doppler radar indicated heavy rain due to thunderstorms. This will cause urban and small stream flooding. Between 1 and 2 inches of rain have fallen. - Additional rainfall amounts up to 0.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Kenosha, Pleasant Prairie, Paddock Lake, Camp Lake, Twin Lakes, Wheatland, Genoa City, Silver Lake, Powers Lake, Pell Lake, Salem, Bristol, Bassett, New Munster and Slades Corners. - http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.

Tornado Watch issued June 11 at 1:58PM CDT until June 11 at 9:00PM CDT by NWS Milwaukee/Sullivan WI

Effective: Thu June 11, 2026, 1:58 PM
Expires: Thu June 11, 2026, 9:00 PM

THE NATIONAL WEATHER SERVICE HAS ISSUED TORNADO WATCH 313 IN EFFECT UNTIL 9 PM CDT THIS EVENING FOR THE FOLLOWING AREAS IN WISCONSIN THIS WATCH INCLUDES 6 COUNTIES IN SOUTH CENTRAL WISCONSIN GREEN LAFAYETTE ROCK IN SOUTHEAST WISCONSIN KENOSHA RACINE WALWORTH THIS INCLUDES THE CITIES OF ARGYLE, BELMONT, BELOIT, BENTON, BLANCHARDVILLE, BRODHEAD, DARLINGTON, DELAVAN, EAST TROY, ELKHORN, JANESVILLE, KENOSHA, LAKE GENEVA, MONROE, RACINE, SHULLSBURG, AND WHITEWATER.

Flood Watch issued June 11 at 12:39PM CDT until June 11 at 11:00PM CDT by NWS Chicago IL

Effective: Thu June 11, 2026, 12:39 PM
Expires: Thu June 11, 2026, 11:00 PM

* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of Illinois, including the following areas, Boone, Central Cook, De Kalb, DuPage, Eastern Will, Grundy, Kane, Kankakee, Kendall, La Salle, Lake IL, Lee, Livingston, McHenry, Northern Cook, Northern Will, Ogle, Southern Cook, Southern Will and Winnebago and northwest Indiana, including the following areas, Lake IN and Porter. * WHEN...Until 11 PM CDT this evening. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. Underpasses may be flooded. Roads and streets may be flooded. * ADDITIONAL DETAILS... - Multiple rounds of heavy showers and thunderstorms are possible this afternoon and evening, with rain rates up to 1 to 3 inches per hour. The most likely areas for flooding include urban areas and locations and received heavy rainfall over the last few days. - http://www.weather.gov/safety/flood

A Flood Watch for flash flooding means rapid-onset flooding is possible, but not yet certain, based upon the latest forecasts. Flash flooding is a dangerous situation. Persons with interests along area rivers, creeks, and other waterways should monitor the latest forecasts and be prepared to take action should flooding develop.

Flash Flood Warning issued June 11 at 6:28PM CDT until June 11 at 10:00PM CDT by NWS Chicago IL

Effective: Thu June 11, 2026, 6:28 PM
Expires: Thu June 11, 2026, 10:00 PM

FFWLOT The National Weather Service in Chicago has issued a * Flash Flood Warning for... Lake IL County in northeastern Illinois... * Until 1000 PM CDT. * At 628 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to 1 inch of rain has fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding. SOURCE...Radar. IMPACT...Rapid-onset flooding of creeks, streams, drainage ditches, streets, underpasses, low-lying areas, and other poor drainage areas. * Some locations that will experience flash flooding include... Waukegan, Arlington Heights, Palatine, Buffalo Grove, Wheeling, Northbrook, North Chicago, Gurnee, Mundelein, Highland Park, Round Lake Beach, Vernon Hills, Zion, Grayslake, Libertyville, Lake Zurich, Lake Forest, Round Lake, Antioch and Wauconda.

A Flash Flood Warning means rapid-onset flooding is imminent or may already be occurring. Persons along creeks, drainage ditches, and other waterways should take immediate precautions to protect life and property.