* WHAT...South winds 25 to 30 kt with gusts up to 40 kt and waves 6 to 9 ft expected.
* WHERE...Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border.
* WHEN...From 3 AM to 9 AM EDT Tuesday.
* IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.