Small Craft Advisory

* WHAT...Very steep and hazardous seas of 12 to 16 feet, decreasing to 10 to 14 feet Thursday. Southwest winds 20 to 30 kt with gusts to 40 kt possible in heavier showers.

* WHERE...Yap Coastal Waters.

* WHEN...For the Hazardous Seas Warning, until 5 AM ChST Thursday. For the Small Craft Advisory, from 5 AM Thursday to 5 PM ChST Friday.

* IMPACTS...Very steep and hazardous seas could capsize or cause damage to vessels.

* ADDITIONAL DETAILS...Gale-force gusts are possible near heavier showers. Although winds may fall below hazardous levels before Friday afternoon, seas will likely remain hazardous.