####018001694####
FZMY50 PGUM 161823

CWFGUM



Coastal Waters Forecast for the Mariana Islands

National Weather Service Tiyan GU

423 AM ChST Fri May 17 2024



Marianas Waters out to 40 nautical miles



PMZ150-170800-

423 AM 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 with 

stronger gusts 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.





$$



PMZ151-152-170800-

Guam Coastal Waters-Rota Coastal Waters-

423 AM ChST Fri May 17 2024



.TODAY...East wind 15 kt. Wind waves 3 ft. East swell 5 to 7 ft.

.TONIGHT THROUGH SUNDAY...East wind 15 kt. Wind waves 3 ft. East 

swell 5 to 7 ft.

.MONDAY...East wind 15 to 20 kt with gusts to 30 kt. Wind waves 4 to

5 ft. East swell 5 to 7 ft.

.TUESDAY...East wind 20 kt with gusts to 30 kt. Wind waves 4 to 5 

ft. East swell 5 to 7 ft. Chance of showers.



$$



PMZ153-154-170800-

Tinian Coastal Waters-Saipan Coastal Waters-

423 AM ChST Fri May 17 2024



.TODAY...East wind 15 kt. Wind waves 3 ft. East swell 5 to 7 ft.

.TONIGHT THROUGH SATURDAY NIGHT...East wind 15 kt. Wind waves 3 ft. 

East swell 5 to 7 ft.

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

Northeast swell 6 to 8 ft. 

.MONDAY...East wind 15 to 20 kt with gust to 30 kt. Wind waves 4 to 

5 ft. East swell 6 to 8 ft. 

.TUESDAY...East wind 20 kt with gust to 30 kt. Wind waves 4 to 5 ft.

East swell 5 to 7 ft.



$$



Simpson