600
FZMY50 PGUM 291800
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 AM ChST Wed Jul 30 2025

Marianas Waters out to 40 nautical miles

PMZ150-300800-
400 AM ChST Wed Jul 30 2025

.Synopsis for Marianas Waters... Light to gentle southwesterlies
are expected today, as a ridge builds farther west-southwest into
the area. Combined seas of 5 to 7 feet are expected to relax over
the next few days as the dominant west-northwest swell and wind
waves continue to diminish, while the trade swell remains weak.

$$

PMZ151>154-300800-
MARIANAS COASTAL WATERS-
400 AM ChST Wed Jul 30 2025

.TODAY...Southwest wind 5 to 10 kt. Seas 5 to 7 ft. Wave Detail:
West 6 ft at 10 seconds, southwest 2 ft at 4 seconds and east 2 ft
at 9 seconds.
.TONIGHT...Northwest wind 5 to 10 kt. Seas 5 to 7 ft. Wave
West 6 ft at 10 seconds, northwest 2 ft at 4 seconds and east 2
ft at 9 seconds.
.THURSDAY...Southwest wind 5 kt. Seas 5 to 6 ft. Wave Detail:
West 6 ft at 10 seconds and east 2 ft at 8 seconds.
.THURSDAY NIGHT...Southwest wind 5 kt. Seas 4 to 6 ft. Wave
Detail: West 6 ft at 10 seconds and east 2 ft at 8 seconds.
.FRIDAY THROUGH SUNDAY...Southeast wind 5 kt. Seas 4 to 6 ft.
Wave Detail: West to northwest 5 ft at 10 seconds and east 3 ft
at 9 seconds. A chance of showers with a slight chance of
thunderstorms.

$$