####018000833####
FZMY50 PGUM 151815

CWFGUM



Coastal Waters Forecast for the Mariana Islands

National Weather Service Tiyan GU

415 AM ChST Fri May 16 2025



Marianas Waters out to 40 nautical miles



PMZ150-161030-

415 AM ChST Fri May 16 2025



.Synopsis for Marianas Waters...Gentle to moderate trade winds and

combined seas of 4 to 6 feet will persist into next week.



$$



PMZ151>154-161030-

MARIANAS COASTAL WATERS-

415 AM ChST Fri May 16 2025



.TODAY...East wind 15 kt. Seas 4 to 6 ft. Wave Detail: East 5 ft

at 8 seconds and east 3 ft at 5 seconds. 

.TONIGHT...East wind 15 kt. Seas 4 to 6 ft. Wave Detail: East

5 ft at 8 seconds and east 3 ft at 5 seconds. 

.SATURDAY  THROUGH TUESDAY...East wind 15 kt. Seas 4 to 6 ft. 

Wave Detail: East 5 ft at 8 seconds and east 3 ft at 5 seconds. 



$$

####018002483####
FZPQ52 PGUM 151819

CWFPQ2



Coastal Waters Forecast for WESTERN MICRONESIA

National Weather Service Tiyan GU

419 AM ChST Fri May 16 2025



Western Micronesia Waters out to 40 nautical miles



PMZ161-161230-

Palau Coastal Waters-

419 AM ChST Fri May 16 2025



.TODAY...East wind 15 to 20 kt. Wind waves 3 to 4 ft. Northeast 

swell 3 to 4 ft. Scattered showers and isolated thunderstorms. 

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

to 4 ft. Scattered showers and isolated thunderstorms. 

.SATURDAY AND SATURDAY NIGHT...East to southeast wind 10 to 15 kt. 

Wind waves 2 to 3 ft. East swell 3 to 4 ft. Scattered showers and 

isolated thunderstorms. 

.SUNDAY...East wind 5 to 15 kt. Wind waves 1 to 3 ft. East swell 3 

to 4 ft. Scattered showers and slight chance of thunderstorms. 

.MONDAY AND TUESDAY...East wind 5 to 10 kt. Wind waves 2 ft or less.

Northeast swell 3 to 4 ft. Showers likely and slight chance of 

thunderstorms. 



$$



PMZ171-161230-

Yap Coastal Waters-

419 AM ChST Fri May 16 2025



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

ft.

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

to 5 ft. 

.SATURDAY AND SATURDAY NIGHT...East wind 10 to 15 kt. Wind waves 2 

to 3 to 4 ft. East swell 4 ft. Scattered showers.

.SUNDAY...East wind 5 to 15 kt. Wind waves 1 to 3 ft. East swell 3 

to 5 ft. Chance of showers and slight chance of thunderstorms. 

.MONDAY...East wind 5 to 15 kt. Wind waves 1 to 3 ft. East swell 4 

ft. Chance of showers. 

.TUESDAY...East wind 5 to 15 kt. Wind waves 1 to 3 ft. East swell 4 

ft. Chance of showers and slight chance of thunderstorms. 



$$



PMZ172-161230-

Chuuk Coastal Waters-

419 AM ChST Fri May 16 2025



.TODAY...East wind 15 kt. Wind waves 3 ft. East swell 4 to 5 ft.

Scattered showers and isolated thunderstorms. 

.TONIGHT AND SATURDAY...East wind 15 kt. Wind waves 3 ft. East swell

4 to 5 ft. Scattered showers and isolated thunderstorms.

.SATURDAY NIGHT...East wind 10 to 15 kt. Wind waves 2 to 3 ft. East 

swell 5 ft. Scattered showers and isolated thunderstorms. 

.SUNDAY AND MONDAY...East wind 10 to 15 kt. Wind waves 2 to 3 ft. 

East swell 3 to 5 ft. Chance of showers and slight chance of 

thunderstorms.

.TUESDAY...East wind 10 kt. Wind waves 2 ft or less. Northeast swell

4 ft. Chance of showers and slight chance of thunderstorms. 



$$