Michigan Marine Forecasts
NWS marine forecasts for 63 coastal waters zones off Michigan, with current wind and seas from the nearest buoy and 3-day charts.
Michigan forecast register
Named coastal zones, current observations and official advisories
| Forecast zoneForecast zone | Wind nowWind now | ConditionsConditions |
|---|---|---|
| 5NM East of Mackinac Bridge to Presque Isle Light MI | NW 12 ktNW 12 kt | peak 30 kt Fri 3 PMpeak 30 kt Fri 3 PM |
| Black River To Ontonagon | N 5 ktN 5 kt | peak 35 kt Fri 7 AMpeak 35 kt Fri 7 AM |
| Eagle River to Manitou Island | NNE 9 ktNNE 9 kt | peak 35 kt Fri 6 AMpeak 35 kt Fri 6 AM |
| Grand Haven to Whitehall | N 13 ktN 13 kt | peak 34 kt Fri 3 PMpeak 34 kt Fri 3 PM |
| Grand Marais to Whitefish Point | NW 13 ktNW 13 kt | peak 35 kt Fri 7 AMpeak 35 kt Fri 7 AM |
| Grand Traverse Bay south of a line Grand Traverse Light to Norwood | W 18 ktW 18 kt | peak 30 kt Fri 3 PMpeak 30 kt Fri 3 PM |
| Harbor Beach to Port Sanilac | W 18 ktW 18 kt | Small Craft AdvisorySmall Craft Advisory |
| Holland to Grand Haven | SW 6 ktSW 6 kt | peak 37 kt Fri 3 PMpeak 37 kt Fri 3 PM |
| Huron Islands to Marquette | N 6 ktN 6 kt | peak 35 kt Fri 9 AMpeak 35 kt Fri 9 AM |
| Inner Saginaw Bay SW of Point Au Gres to Bay Port | W 17 ktW 17 kt | Small Craft AdvisorySmall Craft Advisory |
| Lake Huron from Harbor Beach to Port Sanilac to the border | W 18 ktW 18 kt | peak 31 kt Fri 3 PMpeak 31 kt Fri 3 PM |
| Lake Huron from Port Austin to Harbor Beach | W 7 ktW 7 kt | peak 34 kt Fri 3 PMpeak 34 kt Fri 3 PM |
| Lake Huron from Port Sanilac to Port Huron to the border | W 12 ktW 12 kt | peak 29 kt Fri 3 PMpeak 29 kt Fri 3 PM |
| Lake Huron from Presque Isle Lt. to Sturgeon Point MI to the border | NNW 3 ktNNW 3 kt | peak 36 kt Fri 3 PMpeak 36 kt Fri 3 PM |
| Lake Huron from Sturgeon Point to Alabaster MI to the border | W 15 ktW 15 kt | peak 30 kt Fri 3 PMpeak 30 kt Fri 3 PM |
| Lake Michigan from Charlevoix to Point Betsie | W 18 ktW 18 kt | peak 32 kt Fri 1 PMpeak 32 kt Fri 1 PM |
| Lake Michigan from Grand Haven to Whitehall | N 13 ktN 13 kt | peak 40 kt Fri 2 PMpeak 40 kt Fri 2 PM |
| Lake Michigan from Holland to Grand Haven | SW 6 ktSW 6 kt | peak 39 kt Fri 3 PMpeak 39 kt Fri 3 PM |
| Lake Michigan from Pentwater to Manistee | WNW 14 ktWNW 14 kt | peak 36 kt Fri 1 PMpeak 36 kt Fri 1 PM |
| Lake Michigan from Point Betsie to Manistee | WNW 14 ktWNW 14 kt | peak 35 kt Fri 1 PMpeak 35 kt Fri 1 PM |
| Lake Michigan from Seul Choix Point to Rock Island Passage | NW 7 ktNW 7 kt | peak 28 kt Fri 12 PMpeak 28 kt Fri 12 PM |
| Lake Michigan from South Haven to Holland | SSW 8 ktSSW 8 kt | peak 38 kt Fri 2 PMpeak 38 kt Fri 2 PM |
| Lake Michigan from St. Joseph to South Haven | SSW 6 ktSSW 6 kt | peak 36 kt Fri 3 PMpeak 36 kt Fri 3 PM |
| Lake Michigan from Whitehall to Pentwater | W 6 ktW 6 kt | peak 40 kt Fri 3 PMpeak 40 kt Fri 3 PM |
| Lake St. Clair Open Lake | WSW 10 ktWSW 10 kt | peak 25 kt Fri 1 PMpeak 25 kt Fri 1 PM |
| Lake Superior from Grand Marais MI to Whitefish Point | NW 13 ktNW 13 kt | peak 35 kt Fri 7 AMpeak 35 kt Fri 7 AM |
| Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI | N 6 ktN 6 kt | peak 33 kt Fri 8 AMpeak 33 kt Fri 8 AM |
| Lake Superior from Upper Entrance to Portage Canal to Manitou Island | NNW 9 ktNNW 9 kt | peak 35 kt Fri 7 AMpeak 35 kt Fri 7 AM |
| Manistee to Point Betsie | WNW 14 ktWNW 14 kt | peak 32 kt Fri 1 PMpeak 32 kt Fri 1 PM |
| Manitou Island to Point Isabelle | NNE 9 ktNNE 9 kt | peak 35 kt Fri 9 AMpeak 35 kt Fri 9 AM |
| Marquette to Munising | N 11 ktN 11 kt | peak 35 kt Fri 8 AMpeak 35 kt Fri 8 AM |
| Michigan Waters of Lake Erie from Detroit River to North Cape | S 14 ktS 14 kt | peak 24 kt Fri 2 PMpeak 24 kt Fri 2 PM |
| Munising to Grand Marais | N 11 ktN 11 kt | peak 35 kt Fri 7 AMpeak 35 kt Fri 7 AM |
| New Buffalo MI to St. Joseph | W 2 ktW 2 kt | peak 34 kt Fri 2 PMpeak 34 kt Fri 2 PM |
| Norwood MI West of Mackinac Bridge | NW 7 ktNW 7 kt | peak 31 kt Fri 3 PMpeak 31 kt Fri 3 PM |
| Ontonagon to Upper Entrance of Portage Canal | N 6 ktN 6 kt | peak 35 kt Fri 5 AMpeak 35 kt Fri 5 AM |
| Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay | WSW 21 ktWSW 21 kt | Small Craft AdvisorySmall Craft Advisory |
| Pentwater to Manistee | WNW 14 ktWNW 14 kt | peak 36 kt Fri 2 PMpeak 36 kt Fri 2 PM |
| Point Betsie to Sleeping Bear Point | W 18 ktW 18 kt | peak 33 kt Fri 12 PMpeak 33 kt Fri 12 PM |
| Point Isabelle to Lower Entrance of Portage Canal | N 6 ktN 6 kt | peak 28 kt Fri 9 AMpeak 28 kt Fri 9 AM |
| Port Austin to Harbor Beach | W 7 ktW 7 kt | Small Craft AdvisorySmall Craft Advisory |
| Port Sanilac to Port Huron | W 12 ktW 12 kt | Small Craft AdvisorySmall Craft Advisory |
| Portage Lake to Huron Island MI to Lower Entrance of Portage Canal To Huron Islands MI | N 6 ktN 6 kt | peak 27 kt Fri 7 AMpeak 27 kt Fri 7 AM |
| Presque Isle Light to Sturgeon Pt MI | NW 5 ktNW 5 kt | peak 26 kt Fri 3 PMpeak 26 kt Fri 3 PM |
| Saxon Harbor WI to Black River | NNE 3 ktNNE 3 kt | peak 31 kt Fri 7 AMpeak 31 kt Fri 7 AM |
| Seul Choix Point West of Mackinac Bridge | NNW 6 ktNNW 6 kt | peak 30 kt Fri 2 PMpeak 30 kt Fri 2 PM |
| Seul Choix Point to Point Detour | NW 7 ktNW 7 kt | peak 25 kt Fri 3 PMpeak 25 kt Fri 3 PM |
| Sleeping Bear Point to Grand Traverse Light | W 18 ktW 18 kt | peak 33 kt Fri 1 PMpeak 33 kt Fri 1 PM |
| South Haven to Holland | SSW 8 ktSSW 8 kt | peak 35 kt Fri 2 PMpeak 35 kt Fri 2 PM |
| St. Ignace to False Detour Channel | NNE 7 ktNNE 7 kt | peak 23 kt Fri 3 PMpeak 23 kt Fri 3 PM |
| St. Joseph to South Haven | SSW 6 ktSSW 6 kt | peak 35 kt Fri 3 PMpeak 35 kt Fri 3 PM |
| St. Marys River Point Iroquois to E. Potagannissing Bay | NW 7 ktNW 7 kt | peak 25 kt Fri 2 PMpeak 25 kt Fri 2 PM |
| Straits of Mackinac | NW 7 ktNW 7 kt | peak 27 kt Fri 3 PMpeak 27 kt Fri 3 PM |
| Sturgeon Pt to Alabaster | W 15 ktW 15 kt | peak 27 kt Fri 3 PMpeak 27 kt Fri 3 PM |
| Upper Entrance of Portage Canal to Eagle River | N 6 ktN 6 kt | peak 35 kt Fri 6 AMpeak 35 kt Fri 6 AM |
| Whitefish Bay/Whitefish Point to Point Iroquois | NW 6 ktNW 6 kt | Small Craft AdvisorySmall Craft Advisory |
| Whitehall to Pentwater | W 6 ktW 6 kt | peak 30 kt Fri 3 PMpeak 30 kt Fri 3 PM |
Scroll across the table for all readings →
Michigan marine forecasts: common questions
Is there a small craft advisory off Michigan right now?
6 of the 63 Michigan marine zones are under an active advisory or warning, Harbor Beach to Port Sanilac (small craft advisory), Inner Saginaw Bay SW of Point Au Gres to Bay Port (small craft advisory), Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay (small craft advisory), Port Austin to Harbor Beach (small craft advisory) and 2 others. Each zone page shows the expiry time and the full text.
How windy is it on the Michigan coast right now?
Buoys off Michigan are reporting 2 to 21 knots, the strongest at Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw Bay. A knot is 1.15 mph, so 20 knots is about 23 mph. Wind measured offshore is usually stronger than the same wind felt in a harbor.
How rough are the seas off Michigan today?
The highest seas measured right now are 3 ft off Huron Islands to Marquette, out of the 62 of 63 Michigan zones with a wave-capable buoy nearby. Seas are significant wave height, the average of the highest third of the waves, so individual waves run noticeably higher than the figure.
Who issues the marine forecast for Michigan?
The National Weather Service, from its Detroit/Pontiac, MI office, its Gaylord, MI office, its Grand Rapids, MI office and its Marquette, MI office. Each of the 63 zones on this page gets its own bulletin in a legacy teletype format, reproduced here in full underneath the charts and the live buoy readings.