512
FZMY50 PGUM 290600
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 PM ChST Mon Sep 29 2025

Marianas Waters out to 40 nautical miles

PMZ150-292115-
400 PM ChST Mon Sep 29 2025

.Synopsis for Marianas Waters...Light to gentle winds will prevail
the next few days. Combined seas of 4 to 6 feet, are expected to
diminish a few feet over the next few days as northerly swell
produced by a distant Typhoon Neoguri (25W)(becoming
extratropical) continues to subside. Scattered showers and
isolated thunderstorms are expected through Wednesday as a broad
disturbance continues moving westward through the region.

$$

PMZ151>154-292115-
MARIANAS COASTAL WATERS-
400 PM ChST Mon Sep 29 2025

.TONIGHT...East wind 5 to 10 kt. Seas around 4 to 6 ft. Wave
Detail: Northeast 5 ft at 9 seconds, east 3 ft at 9 seconds and
northeast 2 ft at 4 seconds. Scattered showers and isolated
thunderstorms.
.TUESDAY...East wind 5 to 10 kt. Seas around 4 to 5 ft. Wave
Detail: Northeast 4 ft at 9 seconds, east 3 ft at 9 seconds and
east 2 ft at 4 seconds. Scattered showers with isolated
thunderstorms.
.TUESDAY NIGHT...East wind 5 to 10 kt. Seas around 4 to 5 ft.
Wave Detail: Northeast 3 ft at 8 seconds, east 3 ft at 9 seconds,
and east 2 ft at 4 seconds. Isolated thunderstorms.
.WEDNESDAY...East wind 5 to 10 kt. Seas around 4 ft. Wave Detail:
Northeast 3 ft at 8 seconds, east 2 ft at 4 seconds and north
2 ft at 9 seconds. Scattered showers with isolated thunderstorms.
.WEDNESDAY NIGHT...Northeast wind 5 to 10 kt. Seas around 4 ft.
Wave Detail: Northeast 3 ft at 8 seconds, northeast 2 ft at
4 seconds and north 2 ft at 9 seconds.
.THURSDAY THROUGH SATURDAY...Southeast wind 10 kt. Seas around
4 ft. Wave Detail: East 3 ft at 8 seconds, east 2 ft at 4 seconds
and north 2 ft at 9 seconds. A slight chance of thunderstorms.

$$