Marine Weather Information

Sanilac Shores Underwater Preserve, Michigan. 586 792 2040.

Understand that we dive on many shipwrecks that foundered in rough weather and that the Great Lakes can be very ugly for mariners. Fortunately nowadays we have access to a wealth of information, particularly regarding wind and wave heights—the dual causes of rough rides, dangerous entries and exits, and sick people!

Below is a graph that we use for making short-term go/no-go decisions and determining dive sites for the day:

Great Lakes Wave Height Forecast: NOAA

Below are links that pull up NOAA Great Lakes Marine Text Forecasts by Zone for the areas we dive most regularly. Start checking these on the Wednesday before a charter for an idea of conditions:

Open Lake Forecasts
5NM from shore to Canadian Border
Harbor Beach–Pt. Sanilac
Pt. Sanilac–Pt. Huron
Nearshore Forecasts
within 5NM of shore
Harbor Beach–Pt. Sanilac
Pt. Sanilac–Pt. Huron

And, if you want to know the more general weather conditions, click here:
NWS Forecast: Pt. Sanilac