Coastal Waters Forecast
Issued by NWS Tiyan, Guam

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344
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.

$$