* WHAT...Southwest winds 15 to 25 kt with gusts up to 30 kt and seas 4 to 6 feet expected.
* WHERE...In Massachusetts coastal waters, Nantucket Sound, Vineyard Sound and Buzzards Bay. In Rhode Island coastal waters, Rhode Island Sound and Block Island Sound.
* WHEN...From noon Tuesday to 8 PM EDT Wednesday.
* IMPACTS...Conditions will be hazardous to small craft.