589
FZMY50 PGUM 020608
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
408 PM ChST Sat Aug 2 2025

Marianas Waters out to 40 nautical miles

PMZ150-022345-
408 PM ChST Sat Aug 2 2025

.Synopsis for Marianas Waters...Light to gentle winds this
afternoon will turn more southeasterly and become gentle to
moderate through Sunday as a tropical disturbance passes across
the southern Marianas. As the disturbance passes through, elevated
shower and thunderstorm coverage will persist. Combined seas of 4
to 6 feet, comprised mainly of a lingering west-northwest swell,
will continue through the weekend, to then decrease slowly next
week as said swell subsides.

$$

PMZ151>154-022345-
MARIANAS COASTAL WATERS-
408 PM ChST Sat Aug 2 2025

.TONIGHT...East to southeast wind 5 to 15 kt. Seas 4 to 6 ft.
Wave Detail: West 4 ft at 10 seconds, east 3 ft at 8 seconds and
east 3 ft at 4 seconds. Scattered showers. Isolated thunderstorms
Guam and Rota waters.
.SUNDAY...Southeast wind 5 to 15 kt. Seas 4 to 6 ft. Wave Detail:
West 4 ft at 10 seconds, southeast 3 ft at 8 seconds, east 3 ft
at 4 seconds. Scattered showers. Isolated thunderstorms Guam
waters.
.SUNDAY NIGHT...Southeast wind 10 to 15 kt. Seas around 4 to 6
ft. Wave Detail: West 4 ft at 10 seconds, southeast 3 ft at 8
seconds, east 3 ft at 4 seconds. Scattered showers. Isolated
thunderstorms Guam waters.
.MONDAY...East to southeast wind 10 to 15 kt. Seas around 5 ft.
Wave Detail: West 3 ft at 9 seconds, east 3 ft at 8 seconds and
east 3 ft at 4 seconds.
.MONDAY NIGHT...East to southeast wind 10 to 15 kt. Seas around 4
ft. Wave Detail: East 3 ft at 8 seconds, east 3 ft at 4 seconds
and west 2 ft at 9 seconds. Scattered showers with isolated
thunderstorms.
.TUESDAY THROUGH THURSDAY...South wind 5 to 15 kt. Seas 3 to
4 ft. Wave Detail: East 3 ft at 8 seconds and southeast 3 ft at 4
seconds. Scattered showers with a slight chance of thunderstorms.

$$