Activities
Marine Weather for LM 740
Watches & Warnings
There are currently no watches in effect.
Marine Weather
Marine Weather Links
Waters within five nautical miles of shore
- Marquette to Munising MI
- Munising to Grand Marais MI
- Green Bay North of line from Cedar River MI to Rock Island Passage
- 5NM East of a line from Fairport MI to Rock Island Passage
- Seul Choix Point to Point Detour MI
Waters within five nautical miles of shore on lakes Huron... Michigan and Superior
- Whitefish Bay (U.S. Portion)/Whitefish Point to Point Iroquois MI
- St. Marys River Point Iroquois to E. Potagannissing Bay
- Manistee to Point Betsie MI
- Sleeping Bear Point to Grand Traverse Light MI
- Norwood MI to 5NM West of Mackinac Bridge including Little Traverse Bay
- St Ignace to False Detour Channel
- Sturgeon Pt to Alabaster MI
- 5NM East of Mackinac Bridge to Presque Isle Light MI including Bois Blanc Island
- Seul Choix Point to 5NM West of Mackinac Bridge
- Straits of Mackinac within 5 nm of Mackinac Bridge including Mackinac Island
- Point Betsie to Sleeping Bear Point MI
- Grand Traverse Bay south of a line Grand Traverse Light to Norwood MI
- Presque Isle Light to Sturgeon Pt MI Including Thunder Bay National Marine Sanctuary
Waters within five nautical miles of shore on Lake Michigan
- Calumet Harbor IL to Gary IN
- Northerly Island to Calumet Harbor IL
- Wilmette Harbor to Northerly Island IL
- Winthrop Harbor to Wilmette Harbor IL
- Burns Harbor to Michigan City IN
- Gary to Burns Harbor IN
Waters within five nautical miles of shore on Lake Michigan
Waters beyond five nautical miles of shore on Lake Michigan
- Lake Michigan from Wilmette Harbor to Michigan City in 5NM offshore to Mid Lake
- Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.
- Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM offshore to Mid Lake
- Lake Michigan from St Joseph to South Haven MI 5NM offshore to Mid Lake
- Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM offshore to Mid Lake
- Lake Michigan from South Haven to Holland MI 5NM offshore to Mid lake
- Lake Michigan from North Point Light to Wind Point WI 5NM offshore to Mid Lake
- Lake Michigan from Port Washington to North Point Light WI 5NM offshore to Mid Lake
- Lake Michigan from Sheboygan to Port Washington WI 5NM offshore to Mid Lake
- Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid Lake
- Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid Lake
- Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid Lake
- Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to Mid Lake
- Lake Michigan from Point Betsie to Manistee MI 5NM offshore to Mid Lake
- Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM offshore to mid lake
- Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to mid lake
- Lake Michigan from Seul Choix Point to Rock Island Passage 5NM offshore to Mid Lake
- 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
- Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid Lake
- Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to Mid Lake
Waters within five nautical miles of shore on Lake Michigan
- Wind Point WI to Winthrop Harbor IL
- North Point Light to Wind Point WI
- Port Washington to North Point Light WI
- Sheboygan to Port Washington WI
Waters within five nautical miles of shore on Lake Michigan
- Two Rivers to Sheboygan WI
- Sturgeon Bay to Two Rivers WI
- Green Bay south of line from Oconto WI to Little Sturgeon Bay WI
- 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
- Rock Island Passage to Sturgeon Bay WI
Waters within five nautical miles of shore on Lake Michigan
- South Haven to Holland MI
- St Joseph to South Haven MI
- Holland to Grand Haven MI
- Grand Haven to Whitehall MI
- Pentwater to Manistee MI
- Whitehall to Pentwater MI
Lake Huron forecast beyond five nautical miles from shore
- Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt to the US/Canadian border beyond 5 NM from shore
- Lake Huron from Presque Isle Lt. to Sturgeon Point MI 5NM off shore to US/Canadian border
- Lake Huron from Sturgeon Point to Alabaster MI 5NM off shore to US/Canadian border
- Lake Huron from Port Austin to Harbor Beach 5NM Off Shore to the US/Canadian border
- Lake Huron from Harbor Beach to Port Sanilac 5NM Off Shore to US/Canadian border
- Lake Huron from Port Sanilac to Port Huron 5NM Off Shore to US/Canadian border
Waters within five nautical miles of shore
- Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay
- Port Austin to Harbor Beach MI
- Harbor Beach to Port Sanilac MI
- Port Sanilac to Port Huron MI
- Michigan Waters of Lake Erie from Detroit River to North Cape MI
- Inner Saginaw Bay SW of Point Au Gres to Bay Port MI
Surf City NC to South Santee River SC out 20 nm
Waters within five nautical miles of shore on Lake Erie
- 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
- Conneaut OH to Ripley NY
Waters beyond five nautical miles of shore on Lake Erie
- Detroit River Lt. to Maumee Bay OH to Reno Beach OH beyond 5NM offshoreline to US-Canadian border
- Reno Beach to The Islands OH beyond 5NM off shoreline to US-Canadian border
- The Islands to Vermilion OH beyond 5 nm off shoreline to US-Canadian border
- Vermilion to Avon Point OH beyond 5 nm off shoreline to US-Canadian border
- Avon Point to Willowick OH beyond 5 nm off shoreline to US-Canadian border
- Willowick to Geneva-on-the-Lake OH beyond 5NM off shoreline to US-Canadian border
- Geneva-on-the-Lake to Conneaut OH beyond 5 nm off shoreline to US-Canadian border
- Conneaut OH to Ripley NY beyond 5 nm off shoreline to US-Canadian border
- Ripley to Buffalo NY extending from 5NM off shoreline to US-Canadian border
Waters within five nautical miles of shore
- Niagara River to Hamlin Beach NY
- Ripley to Dunkirk NY
- Upper Niagara River and Buffalo Harbor
- Dunkirk to Buffalo NY
Waters beyond five nautical miles of shore on Lake Ontario
Marine & Boating Location Search
Enter a coastal zip code for marine weather.
Coastal Water Temperatures
| Place | Temperature |
|---|---|
| No Stations Reporting | |
Open Sea Buoy Information
| Place | ID | Sea Temp | Wave Height |
|---|---|---|---|
| Grand Haven Michigan | 45011 | ||
| Click the Station ID for daily observations and history. | |||
C-MAN Station Information
| Place | ID | Water Temp | Wave Height |
|---|---|---|---|
| Sheboygan, WI | SGNW3 |
Not for navigation. Do not rely on this data for decisions that can result in harm or damage.