* WHAT...North winds 20 to 30 kt with gusts up to 40 kt and waves 7 to 10 ft expected.
* WHERE...Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM and Saxon Harbor WI to Black River MI.
* WHEN...From 5 AM EDT /4 AM CDT/ to 2 PM EDT /1 PM CDT/ Friday.
* IMPACTS...Strong winds will cause hazardous waves which could capsize or damage vessels and reduce visibility.