FZMY50 PGUM 021848

CWFGUM



Coastal Waters Forecast for the Mariana Islands

National Weather Service Tiyan GU

448 AM ChST Thu Jul 3 2025



Marianas Waters out to 40 nautical miles



PMZ150-030845-

448 AM ChST Thu Jul 3 2025



.Synopsis for Marianas Waters...As Tropical Storm 04W continues 

to move away to the north of the Far Northern Marianas, a drier

ridge of high pressure has built in. This ridge will bring drier 

conditions through Friday night. Combined seas of 3 to 4 ft will 

persist through the forecast period.



$$



PMZ151>154-030845-

MARIANAS COASTAL WATERS-

448 AM ChST Thu Jul 3 2025



.TODAY...Southeast wind 5 to 10 kt. Seas around 3 ft. Wave

Detail: East 3 ft at 9 seconds. Scattered morning showers.

.TONIGHT THROUGH FRIDAY NIGHT...Southeast wind 5 to 10 kt. Seas 

3 to 4 ft. Wave Detail: East 3 to 4 ft at 9 seconds.

.SATURDAY...South wind 5 kt. Seas 3 to 4 ft. Wave Detail: East

4 ft at 9 seconds. A chance of showers with a slight chance of

thunderstorms.

.SUNDAY THROUGH MONDAY...Southwest wind 5 to 10 kt. Seas 3 to

4 ft. Wave Detail: East 3 ft at 9 seconds and southwest 2 ft at

4 seconds. A chance of showers with a slight chance of

thunderstorms.



$$