* WHAT...For the first Small Craft Advisory, south winds 20 to 30 kt with gusts up to 40 kt and seas 6 to 9 ft expected. For the Gale Warning, south winds 25 to 35 kt with gusts up to 50 kt and seas 13 to 18 ft expected. For the second Small Craft Advisory, seas 12 to 17 ft expected.
* WHERE...Southern Chatham Strait.
* WHEN...For the first Small Craft Advisory, from 10 PM this evening to 4 AM AKDT Tuesday. For the Gale Warning, from 4 AM to 7 PM AKDT Tuesday. For the second Small Craft Advisory, from 7 PM Tuesday to 4 AM AKDT Wednesday.
* IMPACTS...Strong winds will cause hazardous seas which could capsize or damage vessels and reduce visibility.