Great Lakes Conditions and Forecasts

• ALL LAKES FORECASTS

  • Water Levels weekly
    
    

• OPEN LAKE ZONE FORECASTS
  [ NWS Forecast for waters beyond 5 miles nautical miles ]

  • Lake Huron (U.S. portion)
  • Lake Huron MAFOR
  • Lake St. Clair (U.S. portion)
  • Lake Superior (U.S. portion)
  • Lake Superior MAFOR
  • Lake Michigan open water
  • Lake Michigan MAFOR
  • Lake Erie (U.S. portion)
  • Lake Erie MAFOR
  • Lake Ontario (U.S. portion)
  • Lake Ontario MAFOR

• COASTAL MARINE ZONE FORECASTS

  • LAKE SUPERIOR
    [ NWS marine ZONE forecast areas - within 5 nautical miles of shore ]

      Minnesota Shore Line
    • Grand Portage to Grand Marais, MN
    • Grand Marais to Taconite Harbor, MN
    • Taconite Harbor to Silver Bay Harbor, MN
    • Silver Bay Harbor to Two Harbors, MN
    • Two Harbors to Duluth, MN
    •   Wisconsin Shore Line
    • Duluth, MN to Port Wing, WI
    • Port Wing to Sand Island, WI
    • Sand Island to Bayfield, WI
    • Oak Point to Saxon Harbor, WI
    •   Michigan Shore Line
    • Saxon Harbor, WI to Ontonagon, MI
    • Ontonagon to Upper Entrance of Portage Canal, MI
    • Upper Entrance of Portage Canal to Manitou Island, MI
    • Manitou Island to Lower Entrance Light to Portage Lake, MI
    • Huron Island to Marquette, MI
    • Marquette to Grand Marais, MI
    • Grand Marais to Whitefish Point, MI

    • BAYS and RIVER DELTAS of LAKE SUPERIOR

      Chequamegon Bay-Bayfield to Oak Point, WI
      Keweenaw Bay and Huron Bay from Lower Entrance Light to Portage Lake to Huron Island, MI
      Whitefish Bay (U.S. portion), Whitefish Point to Point Iroquois, MI
      St. Marys River, Point Iroquois to Eastern Potagannissing Bay

  • LAKE MICHIGAN
    [ NWS marine ZONE forecast areas - within 5 nautical miles of shore ]

    •   Michigan Shore Line
    • Seul Choix Pt. to Point Detour, MI
    • MacKinac Bridge to Seul Choix Point, MI
    • MacKinac Bridge to Norwood, MI
    • Grand Traverse Light to Sleeping Bear Point, MI
    • Sleeping Bear Point to Manistee, MI
    • Muskegon to Manistee, MI
    • South Haven to Muskegon, MI
    • New Buffalo, MI to South Haven, MI
    • Michigan City, IN to New Buffalo, MI
    •   Wisconsin Shore Line
    • Rock Island Passage Sturgeon Bay, WI
    • Sturgeon Bay, WI to Two Rivers, WI
    • Two Rivers to Sheboygan, WI
    • Sheboygan to Port Washington, WI
    • Port Washington to North Point Light, WI
    • North Point Light to Wind Point, WI
    •   Illinois Shore Line
    • Wind Point Light to Winthrop Harbor, IL
    • Winthrop Harbor to Wilmette Harbor, IL
    • Wilmette Harbor to Meigs Field, IL
    • Meigs Field to Calumet Harbor, IL
    •   Indiana Shore Line
    • Calumet Harbor to Gray Harbor, IN
    • Gray to Burns Harbor, IN
    • Burns Harbor to Michigan City, IN

    • BAYS of LAKE MICHIGAN

      Grand Traverse Bay Norwood to Grand Traverse Light, MI
      Bay of Green Bay, MI (north of line from Cedar River, MI to Rock Island Passage)
      Bay of Green Bay, WI (south of line from Cedar River to Rock Island Passage & 
                                          north of a line from Marinette, WI to Fish Creek, WI)
      Bay of Green Bay, WI (south of a line from Marinette, WI to Fish Creek, WI)

  • LAKE HURON
    [ NWS marine ZONE forecast areas - within 5 nautical miles of shore ]

    • Mackinac Bridge to False Detour Channel, MI
    • Mackinac Bridge to Presque Island Light, MI
    • Presque Island Light to Alabaster, MI
    • Port Austin to White Rock, MI
    • White Rock to Lakeport, MI
    • Lakeport to Port Huron, MI

    • BAYS of LAKE HURON and LAKE SAINT CLAIR

      • Saginaw Bay, Alabaster to Point Huron, MI
      • St. Clair Lake, MI (U.S. Portion)

  • LAKE ERIE
    [ NWS marine ZONE forecast areas - within 5 nautical miles of shore line ]

    •   Michigan Shore Line
    • Detroit River to North Cape, MI
    •   Ohio Shore Line
    • Maumee Bay to Reno Beach, OH
    • Reno Beach to The Islands, OH
    • The Islands to Vermilion, OH
    • Vermilion to Avon Point, OH
    • Avon Point to Willowick, OH
    • Willowick to Geneva-on-the-Lake, OH
    • Geneva-on-the-Lake to Conneaut, OH
    •   Pennsylvania Shore Line
    • Conneaut, OH to Ripley, NY
    •   New York Shore Line
    • Ripley to Dunkirk, NY
    • Dunkirk to Bullalo, NY

    • BAYS and RIVER DELTAS of LAKE ERIE

      Buffalo Harbor and the Upper Niagara River, NY

  • LAKE ONTARIO
    [ NWS marine ZONE forecast areas - within 5 nautical miles of shore line ]

    • Niagara River to Thirty-Mile Point, NY
    • Thirty-Mile Point to Sodus Bay, NY
    • Sodus Bay to Mexico Bay, NY
    • Mexico Bay, NY to the St. Lawrence River

  • SAINT LAWRENCE RIVER

    • St. Lawrence River above Ogdensburg, NY
    • St. Lawrence River from Ogdensburg to St. Regis, NY