Forecast as of 3:05 PM CDT on May 21, 2013
Winthrop Harbor To Wilmette Harbor-
Wilmette Harbor To Northerly Island-
Northerly Island To Calumet Harbor-
Gale watch in effect from Thursday morning through Thursday evening
Tonight
Southwest winds 20 to 25 kt diminishing to 5 to 10 kt. Patchy fog through the night. Slight chance of showers and thunderstorms in the evening. Showers and thunderstorms likely after midnight. Waves around 1 ft.
Wednesday
West winds 5 to 10 kt. Showers and thunderstorms likely. Waves nearly calm.
Wednesday Night
West winds 5 to 10 kt becoming northwest after midnight and increasing to 10 to 15 kt late. Chance of showers. Waves around 1 ft.
Thursday
North winds to 30 kt increasing to gales to 35 kt in the afternoon. Chance of showers in the morning... then slight chance of showers in the afternoon. Waves building 6 to 10 ft occasionally to 14 ft from early morning on.
Water Temperatures
Place Temperature
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Global Marine Zone Map and more marine data here.

Marine links for Waters within five nautical miles of shore
MQT Marquette to Munising MI
MQT Munising to Grand Marais MI
MQT Green Bay North of line from Cedar River MI to Rock Island Passage
MQT 5NM East of a line from Fairport MI to Rock Island Passage
MQT Seul Choix Point to Point Detour MI
Marine links for Waters within five nautical miles of shore on lakes Huron... Michigan and Superior
APX Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI
APX St. Marys River Point Iroquois to E. Potagannissing Bay
APX Manistee to Point Betsie MI
APX Sleeping Bear Point to Grand Traverse Light MI
APX Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay
APX St Ignace to False Detour Channel
APX Sturgeon Pt to Alabaster MI
APX 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island
APX Seul Choix Point to 5NM West of Mackinac Bridge
APX Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island
APX Point Betsie to Sleeping Bear Point MI
APX Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI
APX Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary
Marine links for Waters within five nautical miles of shore on Lake Michigan
LOT Calumet Harbor IL to Gary IN
LOT Northerly Island to Calumet Harbor IL
LOT Wilmette Harbor to Northerly Island IL
LOT Winthrop Harbor to Wilmette Harbor IL
LOT Burns Harbor to Michigan City IN
LOT Gary to Burns Harbor IN
Marine links for Waters within five nautical miles of shore on Lake Michigan
IWX New Buffalo MI to St Joseph MI
IWX Michigan City IN to New Buffalo MI
Marine links for Waters beyond five nautical miles of shore on Lake Michigan
LOT Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake
LOT Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.
LOT Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake
LOT Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake
LOT Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM offshore to Mid Lake
LOT Lake Michigan from South Haven to Holland MI 5NM offshore to Mid lake
LOT Lake Michigan from North Point Light to Wind Point WI 5NM offshore to Mid Lake
LOT Lake Michigan from Port Washington to North Point Light WI 5NM offshore to Mid Lake
LOT Lake Michigan from Sheboygan to Port Washington WI 5NM offshore to Mid Lake
LOT Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake
LOT Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake
LOT Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid Lake
LOT Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to Mid Lake
LOT Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake
LOT Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake
LOT Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to mid lake
LOT Lake Michigan from Seul Choix Point to Rock Island Passage 5NM offshore to Mid Lake
LOT 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 5NM offshore
LOT Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid Lake
LOT Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake
Marine links for Waters within five nautical miles of shore on Lake Michigan
MKX Wind Point WI to Winthrop Harbor IL
MKX North Point Light to Wind Point WI
MKX Port Washington to North Point Light WI
MKX Sheboygan to Port Washington WI
Marine links for Waters within five nautical miles of shore on Lake Michigan
GRB Two Rivers to Sheboygan WI
GRB Sturgeon Bay to Two Rivers WI
GRB Green Bay south of line from Oconto WI to Little Sturgeon Bay WI
GRB Green Bay south of line from Cedar River to Rock Island Passage and north of a line from Oconto WI to Little Sturgeon Bay WI
GRB Rock Island Passage to Sturgeon Bay WI
Marine links for Waters within five nautical miles of shore on Lake Michigan
GRR South Haven to Holland MI
GRR St Joseph to South Haven MI
GRR Holland to Grand Haven MI
GRR Grand Haven to Whitehall MI
GRR Pentwater to Manistee MI
GRR Whitehall to Pentwater MI
Marine links for Lake Huron forecast beyond five nautical miles from shore
DTX Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt to the US/Canadian border beyond 5 NM from shore
DTX Lake Huron from Presque Isle Lt. to Sturgeon Point MI 5NM off shore to US/Canadian border
DTX Lake Huron from Sturgeon Point to Alabaster MI 5NM off shore to US/Canadian border
DTX Lake Huron from Port Austin to Harbor Beach 5NM Off Shore to the US/Canadian border
DTX Lake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to US/Canadian border
DTX Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border
Marine links for Waters within five nautical miles of shore
DTX Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay
DTX Port Austin to Harbor Beach MI
DTX Harbor Beach to Port Sanilac MI
DTX Port Sanilac to Port Huron MI
DTX Michigan Waters of Lake Erie from Detroit River to North Cape MI
DTX Inner Saginaw Bay SW of Point Au Gres to Bay Port MI
Marine links for
DTX Lake St. Clair Open Lake (U.S. Portion)
Marine links for Surf City NC to South Santee River SC out 20 nm
DTX Detroit River
DTX St. Clair River
BUF Lower Niagara River
Marine links for Waters within five nautical miles of shore on Lake Erie
CLE Maumee Bay to Reno Beach OH
CLE Reno Beach to The Islands OH
CLE The Islands to Vermilion OH
CLE Vermilion to Avon Point OH
CLE Avon Point to Willowick OH
CLE Willowick to Geneva-on-the Lake OH
CLE Geneva-on-the-Lake to Conneaut OH
CLE Conneaut OH to Ripley NY
Marine links for Waters beyond five nautical miles of shore on Lake Erie
CLE Detroit River Lt. to Maumee Bay OH to Reno Beach OH beyond 5NM offshoreline to US-Canadian border
CLE Reno Beach to The Islands OH beyond 5NM off shoreline to US-Canadian border
CLE The Islands to Vermilion OH beyond 5 nm off shoreline to US-Canadian border
CLE Vermilion to Avon Point OH beyond 5 nm off shoreline to US-Canadian border
CLE Avon Point to Willowick OH beyond 5 nm off shoreline to US-Canadian border
CLE Willowick to Geneva-on-the-Lake OH beyond 5NM off shoreline to US-Canadian border
CLE Geneva-on-the-Lake to Conneaut OH beyond 5 nm off shoreline to US-Canadian border
CLE Conneaut OH to Ripley NY beyond 5 nm off shoreline to US-Canadian border
CLE Ripley to Buffalo NY extending from 5NM off shoreline to US-Canadian border
Marine links for Waters within five nautical miles of shore
BUF Niagara River to Hamlin Beach NY
BUF Ripley to Dunkirk NY
BUF Upper Niagara River and Buffalo Harbor
BUF Dunkirk to Buffalo NY
Marine links for Waters beyond five nautical miles of shore on Lake Ontario
BUF Niagara River to Hamlin Beach NY beyond 5NM off shoreline to US-Canadian border
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