Small Craft Advisory issued December 19 at 9:03PM CST until December 21 at 9:00AM CST by NWS Chicago IL

* WHAT…North winds to 30 kt with a few gale force gusts to 35
kt and significant waves to 9 ft occasionally to 12 ft
expected.

* WHERE…Winthrop Harbor to Calumet Harbor, IL.

* WHEN…From 3 AM Friday to 9 AM CST Saturday.

* IMPACTS…Conditions will be hazardous to small craft.