909
FZMY50 PGUM 030632
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
432 PM ChST Sun Aug 3 2025

Marianas Waters out to 40 nautical miles

PMZ150-032245-
432 PM ChST Sun Aug 3 2025

.Synopsis for Marianas Waters...Gentle to moderate southeasterlies
are expected to persist the next few days as a weak circulation
continues to move west away from the Marianas. Combined seas of 4
to 6 feet, comprised mainly of a lingering west-northwest swell,
will continue into the week, to then decrease slowly thereafter as
said swell subsides.

$$

PMZ151>154-032245-
MARIANAS COASTAL WATERS-
432 PM ChST Sun Aug 3 2025

.TONIGHT...Southeast wind 10 to 15 kt. Seas 4 to 6 ft. Wave
Detail: West 4 ft at 10 seconds, southeast 3 ft at 4 seconds and
east 3 ft at 8 seconds. Scattered showers. Isolated thunderstorms
across Guam`s Coastal Waters.
.MONDAY...East wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: West
3 ft at 9 seconds, east 2 ft at 4 seconds and east 3 ft at 8
seconds.
.MONDAY NIGHT...East wind 5 to 10 kt. Seas 3 to 5 ft. Wave
Detail: East 4 ft at 8 seconds, east 2 ft at 4 seconds and west 2
ft at 9 seconds. Scattered showers with isolated thunderstorms.
.TUESDAY...East wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail:
East 4 ft at 8 seconds, east 2 ft at 4 seconds and west 2 ft at 8
seconds. Scattered showers with isolated thunderstorms.
.TUESDAY NIGHT...East wind 5 to 10 kt. Seas 3 to 5 ft. Wave
Detail: East 4 ft at 8 seconds, east 2 ft at 4 seconds and west
2 ft at 8 seconds. Scattered showers with isolated thunderstorms.
.WEDNESDAY AND THURSDAY...South wind 10 kt. Seas 3 to 5 ft. Wave
Detail: East 4 ft at 8 seconds and south 2 ft at 4 seconds. A
chance of showers with a slight chance of thunderstorms.
.FRIDAY...East wind 5 kt. Seas around 3 ft. Wave Detail: East
3 ft at 10 seconds. A slight chance of thunderstorms.

$$