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FZMY50 PGUM 170644

CWFGUM



Coastal Waters Forecast for the Mariana Islands

National Weather Service Tiyan GU

444 PM ChST Fri May 17 2024



Marianas Waters out to 40 nautical miles



PMZ150-172030-

444 PM ChST Fri May 17 2024



.Synopsis for Marianas Waters...The pressure gradient will tighten 

between high pressure to our north and a tropical disturbance south

of the Marianas. Moderate trade winds today will become fresh to

potentially strong this weekend. Combined seas of 5 to 8 feet will 

gradually build to 6 to 9 feet on Sunday. A Small Craft Advisory may 

be needed by Monday. 



$$



PMZ151-152-172030-

Guam Coastal Waters-Rota Coastal Waters-

444 PM ChST Fri May 17 2024



.TONIGHT...East wind 15 kt. Wind waves 3 ft. East swell 4 to 6 ft. 

.SATURDAY AND SATURDAY NIGHT...East wind 15 kt. Wind waves 3 ft. 

East swell 4 to 6 ft. Scattered showers.

.SUNDAY...East wind 15 to 20 kt. Wind waves 3 to 4 ft. East swell

5 to 7 ft. 

.SUNDAY NIGHT AND MONDAY...East wind 15 to 20 kt with gusts to 25 

kt. Wind waves 3 to 5 ft. Northeast swell 6 to 8 ft. 

.TUESDAY...East wind 15 to 20 kt. Wind waves 3 to 4 ft. East swell

6 to 8 ft. Chance of showers. 

.WEDNESDAY...East wind 15 kt with gusts to 25 kt. Wind waves 3 to 4 

ft. East swell 6 to 8 ft. Chance of showers and slight chance of 

thunderstorms. 



$$



PMZ153-154-172030-

Tinian Coastal Waters-Saipan Coastal Waters-

444 PM ChST Fri May 17 2024



.TONIGHT...East wind 15 kt. Wind waves 3 ft. East swell 4 to 6 ft. 

.SATURDAY...East wind 15 kt. Wind waves 3 ft. East swell 4 to 6 ft.

.SATURDAY NIGHT AND SUNDAY...East wind 15 to 20 kt. Wind waves 3 to 

4 ft. East swell 5 to 7 ft. 

.SUNDAY NIGHT THROUGH TUESDAY...East wind 15 to 20 kt with gusts to 

25 kt. Wind waves 3 to 5 ft. Northeast swell 6 to 8 ft. 

.WEDNESDAY...East wind 15 kt with gusts to 25 kt. Wind waves 3 to

4 ft. East swell 6 to 8 ft. Chance of showers. 



$$