* WHAT...Southwest winds 15 to 20 kt with gusts up to 30 kt and seas 8 to 12 feet.
* WHERE...Guam and Rota Coastal Waters.
* WHEN...Until 5 PM ChST Tuesday.
* IMPACTS...Conditions will be hazardous to small craft.
* ADDITIONAL DETAILS...A monsoon surge flowing into Typhoon Choi-wan will maintain fresh winds with near-gale gusts.