791
FZMY50 PGUM 311813
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
413 AM ChST Mon Sep 1 2025

Marianas Waters out to 40 nautical miles

PMZ150-010915-
413 AM ChST Mon Sep 1 2025

.Synopsis for Marianas Waters...Expect light to moderate winds
over the next few days. Then near the weekend winds are
anticipated to fall back to light to gentle. Combined seas of 3
to 5 feet are expected to gradually fall over the week to near 3
feet by the weekend.

$$

PMZ151>154-010915-
MARIANAS COASTAL WATERS-
413 AM ChST Mon Sep 1 2025

.TODAY...East wind 5 to 10 kt. Seas around 4 ft. Wave Detail:
South 4 ft at 8 seconds. Isolated thunderstorms.
.TONIGHT...Northeast wind 5 to 15 kt. Seas around 4 ft. Wave
Detail: Northeast 3 ft at 4 seconds and south 3 ft at 8 seconds.
Scattered showers with isolated thunderstorms.
.TUESDAY...East wind 10 to 15 kt. Seas around 4 ft. Wave Detail:
East 3 ft at 4 seconds and southeast 3 ft at 8 seconds. Scattered
showers with isolated thunderstorms.
.TUESDAY NIGHT...Southeast wind 5 to 15 kt. Seas around 4 ft.
Wave Detail: South 4 ft at 8 seconds and southeast 2 ft at
4 seconds. Numerous showers with isolated thunderstorms.
.WEDNESDAY THROUGH THURSDAY...East wind 5 to 15 kt. Seas 3 to
4 ft. Wave Detail: Southwest 4 ft at 8 seconds and southeast 2 ft
at 4 seconds. A chance of showers with a slight chance of
thunderstorms.
.FRIDAY...East wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: East
3 ft at 8 seconds. A slight chance of thunderstorms.

$$