790
FZMY50 PGUM 030600
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 PM ChST Wed Sep 3 2025

Marianas Waters out to 40 nautical miles

PMZ150-032130-
400 PM ChST Wed Sep 3 2025

.Synopsis for Marianas Waters...Light to moderate winds will
persist through Thursday night, then becoming light to gentle.
Seas of 3 to 4 feet could diminish slightly to between 2 and 3
feet on Friday.

$$

PMZ151-152-032130-
Guam Coastal Waters-Rota Coastal Waters-
400 PM ChST Wed Sep 3 2025

.TONIGHT...East wind 10 to 15 kt. Seas around 3 to 4 ft. Wave
Detail: East 3 ft at at 4 seconds and east 2 ft at 8 seconds.
Scattered showers.
.THURSDAY...East wind 10 to 15 kt. Seas around 3 to 4 ft. Wave
Detail: East 3 ft at 4 seconds and east 2 ft at 8 seconds.
Scattered showers.
.THURSDAY NIGHT...East wind 5 to 15 kt. Seas around 3 to 4 ft.
Wave Detail: East 3 ft at 4 seconds and east 2 ft at 8 seconds.
Scattered showers.
.FRIDAY...East wind 5 to 10 kt. Seas around 3 ft. Wave Detail:
East 2 ft at 8 seconds and east 2 ft at 4 seconds. Scattered
showers with isolated thunderstorms.
.FRIDAY NIGHT...East wind 5 to 10 kt. Seas around 3 ft. Wave
Detail: East 2 ft at 8 seconds and east 2 ft at 4 seconds.
Scattered showers with isolated thunderstorms.
.SATURDAY...East wind 5 to 10 kt. Seas around 3 ft. Wave Detail:
East 2 ft at 8 seconds and east 2 ft at 4 seconds. Scattered
showers with a slight chance of thunderstorms.
.SUNDAY THROUGH MONDAY...East wind 5 to 10 kt. Seas around 3 ft.
Wave Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds. A
slight chance of thunderstorms.

$$

PMZ153-154-032130-
Tinian Coastal Waters-Saipan Coastal Waters-
400 PM ChST Wed Sep 3 2025

.TONIGHT...East wind 10 to 15 kt. Seas around 3 to 4 ft. Wave
Detail: East 3 ft at 4 seconds and east 2 ft at 8 seconds.
Scattered showers.
.THURSDAY...East wind 10 kt. Seas around 3 ft. Wave Detail: East
2 ft at 8 seconds and east 2 ft at 2 seconds.
.THURSDAY NIGHT...East wind 5 to 10 kt. Seas around 3 to 4 ft.
Wave Detail: Northeast 3 ft at 9 seconds and east 2 ft at 4
seconds. Scattered showers with isolated thunderstorms.
.FRIDAY...East wind 5 to 10 kt. Seas around 3 to 4 ft. Wave
Detail: Northeast 3 ft at 8 seconds and east 2 ft at 4 seconds.
Scattered showers with isolated thunderstorms.
.FRIDAY NIGHT...East wind 10 kt. Seas around 3 ft. Wave Detail:
East 2 ft at 8 seconds and east 2 ft at 4 seconds. Scattered
showers with isolated thunderstorms.
.SATURDAY...East wind 5 to 10 kt. Seas around 3 ft. Wave Detail:
East 3 ft at 8 seconds and east 2 ft at 4 seconds. Scattered
showers with a slight chance of thunderstorms.
.SUNDAY...East wind 5 kt. Seas around 3 ft. Wave Detail: East
2 ft at 8 seconds and east 2 ft at 4 seconds. A slight chance of
thunderstorms.
.MONDAY...East wind 5 to 10 kt. Seas around 3 to 4 ft. Wave
Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds.

$$