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Nearshore Marine Zone Forecasts by the Chicago, IL Forecast Office - click on the area of interest

map showing marine forecast zones on the open waters of Lake Michigan

Open Lake Forecast for Lake Michigan    (All Zones - Includes Synopsis and MAFOR) 

Experimental Modernized Open Lake Forecast for Lake Michigan

Nearshore Marine Forecasts

Great Lakes Marine Weather Portal - Includes point forecasts

Great Lakes Water Level Data

Marine Weather for Canada

Great Lakes Open Lake forecasts are subdivided by zone, each identified by text description and a Universal Generic Code (UGC). The different colors used in the map above have no meaning and are only intended to assist in differentiating the zones.

These forecasts are also available via e-mail

NOTICE - Check time and date of forecasts. Linked data may not represent the latest forecast. The Internet is not part of the National Weather Service's operational data stream and should never be relied upon as a means to obtain the latest forecast and warning data. Become familiar with and use other means such as NOAA Weather Radio to obtain the latest forecasts and warnings. Please read our DISCLAIMER

Visit the Chicago, IL Forecast Office which provides links to additional products as well as regionally focused information such as point-specific marine forecasts, predicted tides and buoy observations.

Text Interface Version of this page.LMZ362 Lake Michigan south of a line from Seul Choix Point to the Mackinac Bridge and north of a line from Charlevoix MI to South Fox Island 5 NM offshore LMZ364 Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to mid lake LMZ366 Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to mid lake LMZ868 Lake Michigan from Pentwater to Manistee MI 5 NM off hore to mid lake LMZ870 Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to mid lake LMZ872 Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to mid lake LMZ874 Lake Michigan from Holland to Grand Haven MI 5 NM offshore to mid lake LMZ876 Lake Michigan from South Haven to Holland MI 5 NM offshore to mid lake LMZ878 Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to mid lake LMZ080 Lake Michigan from Michigan City IN to St. Joseph MI 5 NM offshore to mid lake LMZ779 Lake Michigan from Wilmette Harbor to Michigan City IN 5 NM offshore to mid lake LMZ777 Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM offshore to mid lake LMZ675 Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM offshore to mid lake LMZ673 Lake Michigan from North Point Light to Wind Point WI 5 NM offshore to mid lake LMZ671 Lake Michigan from Port Washington to North Point Light WI 5 NM offshore to mid lake LMZ669 Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore to mid lake LMZ567 Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to mid lake LMZ565 Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to mid lake LMZ563 Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5 NM offshore to mid lake LMZ261 Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM offshore to mid lake LMZ362 Lake Michigan south of a line from Seul Choix Point to the Mackinac Bridge and north of a line from Charlevoix MI to South Fox Island 5 NM offshore LMZ364 Lake Michigan from Charlevoix to Point Betsie MI 5 NM offshore to mid lake LMZ366 Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to mid lake LMZ868 Lake Michigan from Pentwater to Manistee MI 5 NM off hore to mid lake LMZ870 Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to mid lake LMZ872 Lake Michigan from Grand Haven to Whitehall MI 5 NM offshore to mid lake LMZ874 Lake Michigan from Holland to Grand Haven MI 5 NM offshore to mid lake LMZ876 Lake Michigan from South Haven to Holland MI 5 NM offshore to mid lake LMZ878 Lake Michigan from St. Joseph to South Haven MI 5 NM offshore to mid lake LMZ080 Lake Michigan from Michigan City IN to St. Joseph MI 5 NM offshore to mid lake LMZ779 Lake Michigan from Wilmette Harbor to Michigan City IN 5 NM offshore to mid lake LMZ777 Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5 NM offshore to mid lake LMZ675 Lake Michigan from Wind Point WI to Winthrop Harbor IL 5 NM offshore to mid lake LMZ673 Lake Michigan from North Point Light to Wind Point WI 5 NM offshore to mid lake LMZ671 Lake Michigan from Port Washington to North Point Light WI 5 NM offshore to mid lake LMZ669 Lake Michigan from Sheboygan to Port Washington WI 5 NM offshore to mid lake LMZ567 Lake Michigan from Two Rivers to Sheboygan WI 5 NM offshore to mid lake LMZ565 Lake Michigan from Sturgeon Bay to Two Rivers WI 5 NM offshore to mid lake LMZ563 Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5 NM offshore to mid lake LMZ261 Lake Michigan from Seul Choix Point to Rock Island Passage 5 NM offshore to mid lake