Coastal Waters Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
618 FZMY50 PGUM 300533 CWFGUM Coastal Waters Forecast for the Mariana Islands National Weather Service Tiyan GU 333 PM ChST Thu May 30 2024 Marianas Waters out to 40 nautical miles PMZ150-302100- 333 PM ChST Thu May 30 2024 .Synopsis for Marianas Waters...Gentle to moderate trade winds are expected to become light to gentle for the weekend into next week. Combined seas of 3 to 5 feet will subside slightly to between 2 and 4 feet over the weekend. An approaching weak trade-wind trough combined with an upper-level low is expected to bring scattered showers tonight across the waters, with isolated thunderstorms possible around midnight. Scattered showers and isolated thunderstorms will continue for Guam and Rota waters until Friday afternoon. $$ PMZ151-152-302100- Guam Coastal Waters-Rota Coastal Waters- 333 PM ChST Thu May 30 2024 .TONIGHT...East wind 10 to 15 kt. Wind waves 2 to 3 ft. East swell 3 to 4 ft. Scattered showers. Isolated thunderstorms near midnight. .FRIDAY...East wind 10 to 15 kt. Wind waves 2 to 3 ft. East swell 3 to 4 ft. Scattered showers and isolated thunderstorms in the morning. .FRIDAY NIGHT AND SATURDAY...East wind 5 to 10 kt. Wind waves 2 ft or less. East swell 3 to 4 ft. .SATURDAY NIGHT THROUGH MONDAY...Southeast to south wind 5 to 10 kt. Wind waves 2 ft or less. East swell 3 to 4 ft. .TUESDAY...Southeast wind 5 to 10 kt. Wind waves 2 ft or less. Light swell. Chance of showers and slight chance of thunderstorms. $$ PMZ153-154-302100- Tinian Coastal Waters-Saipan Coastal Waters- 333 PM ChST Thu May 30 2024 .TONIGHT...East wind 10 to 15 kt. Wind waves 2 to 3 ft. East swell 3 to 4 ft. Scattered showers. Isolated thunderstorms near midnight. .FRIDAY...East wind 5 to 15 kt. Wind waves 1 to 3 ft. East swell 3 to 4 ft. .FRIDAY NIGHT AND SATURDAY...East wind 5 to 10 kt. Wind waves 2 ft or less. East swell 3 to 4 ft. .SATURDAY NIGHT THROUGH MONDAY...Southeast to south wind 5 to 10 kt. Wind waves 2 ft or less. East swell 3 to 4 ft. .TUESDAY...Southeast wind 5 to 10 kt. Wind waves 2 ft or less. Light swell. Chance of showers and slight chance of thunderstorms. $$