* WHAT...Northeast winds 25 to 35 kt with gusts up to 55 kt and seas 17 to 22 feet.
* WHERE...In Massachusetts coastal waters, Coastal waters from Provincetown MA to Chatham MA to Nantucket MA out 20 NM. In Atlantic coastal waters, Ocean Waters from Provincetown to Nantucket from 20 to 60 NM.
* WHEN...Until 8 PM EDT Saturday.
* IMPACTS...Storm force winds and hazardous seas will capsize or damage vessels and reduce visibility.