930
FZMY50 PGUM 240600
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 PM ChST Sun Aug 24 2025

Marianas Waters out to 40 nautical miles

PMZ150-242215-
400 PM ChST Sun Aug 24 2025

.Synopsis for Marianas Waters...Trade winds converging into the
Marianas will bring scattered showers and isolated thunderstorms
through at least Thursday with lulls for Monday and Monday night.
Combined seas of 3 to 4 feet with light to gentle winds are
expected through Monday. Seas should increase to 3 to 5 feet and
winds should increase to gentle to moderate from Monday night on.

$$

PMZ151>154-242215-
MARIANAS COASTAL WATERS-
400 PM ChST Sun Aug 24 2025

.TONIGHT...East wind 10 kt. Seas around 3 ft. Wave Detail: East
2 ft at 4 seconds and east 2 ft at 8 seconds. Scattered showers
with isolated thunderstorms.
.MONDAY...East wind 5 to 10 kt. Seas around 3 ft. Wave Detail:
East 3 ft at 8 seconds. Isolated thunderstorms.
.MONDAY NIGHT...East wind 10 to 20 kt with gusts to 30 kt. Seas
3 to 5 ft. Wave Detail: East 4 ft at 4 seconds and east 3 ft at
8 seconds. Isolated thunderstorms.
.TUESDAY...East wind 10 to 15 kt. Seas 3 to 5 ft. Wave Detail:
East 3 ft at 4 seconds and east 4 ft at 8 seconds. Scattered
showers with isolated thunderstorms.
.TUESDAY NIGHT...Southeast wind 10 to 15 kt. Seas 3 to 4 ft. Wave
Detail: Southeast 3 ft at 5 seconds and east 3 ft at 8 seconds.
Scattered showers with isolated thunderstorms.
.WEDNESDAY THROUGH THURSDAY...East wind 5 to 15 kt. Seas 3 to
5 ft. Wave Detail: Southeast 3 ft at 4 seconds and east 4 ft at
8 seconds. Scattered showers with a slight chance of
thunderstorms.
.FRIDAY...East wind 10 kt. Seas 3 to 5 ft. Wave Detail: East 4 ft
at 8 seconds and east 2 ft at 4 seconds. A slight chance of
thunderstorms.

$$