The National Weather Service has issued Great Lakes gale and storm warnings in effect through Wednesday. It says waves on Lake Michigan could be 10 to 18 feet by Monday afternoon, then build to 20 to 33 feet on Tuesday before subsiding. Waves on parts of Lake Superior and Lake Huron could top 20 feet.
Break out the long boards and wet suits...
Seriously, though, I hope they are prepared and ready for this. These waves could create havoc along the coast and inlets.