309
FZMY50 PGUM 080628
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
428 PM ChST Wed Oct 8 2025

Marianas Waters out to 40 nautical miles

PMZ150-082200-
428 PM ChST Wed Oct 8 2025

.Synopsis for Marianas Waters...Winds will be mainly light to
gentle this week, and build to gentle to moderate around Sunday.
Combined seas of 3 to 5 feet will continue through Friday, then
build to between 5 and 7 feet for the weekend as a north swell
moves in.

$$

PMZ151>154-082200-
MARIANAS COASTAL WATERS-
428 PM ChST Wed Oct 8 2025

.TONIGHT...East wind 10 kt. Seas around 3 to 5 ft. Wave Detail:
East 4 ft at 8 seconds and east 2 ft at 4 seconds.
.THURSDAY...Northeast wind 5 to 10 kt. Seas 3 to 5 ft. Wave
Detail: East 4 ft at 8 seconds and northeast 2 ft at 4 seconds.
Scattered showers with isolated thunderstorms.
.THURSDAY NIGHT...Northeast wind 10 kt. Seas 3 to 5 ft. Wave
Detail: East 4 ft at 8 seconds and northeast 2 ft at 4 seconds.
Scattered showers with isolated thunderstorms.
.FRIDAY...East wind 5 to 10 kt. Seas around 3 to 5 ft. Wave
Detail: East 4 ft at 8 seconds and east 2 ft at 4 seconds.
Isolated thunderstorms.
.FRIDAY NIGHT...East wind 5 to 10 kt. Seas 3 to 5 ft. Wave
Detail: Northeast 4 ft at 8 seconds and east 2 ft at 4 seconds.
Isolated thunderstorms.
.SATURDAY...East wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail:
Northeast 4 ft at 9 seconds, east 3 ft at 8 seconds and east 2 ft
at 4 seconds.
.SUNDAY THROUGH MONDAY...East wind 10 to 15 kt. Seas 5 to 7 ft.
Wave Detail: Northeast 5 ft at 10 seconds, east 3 ft at 4 seconds
and east 3 ft at 8 seconds.

$$