757
FZMY50 PGUM 301828
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
428 AM ChST Tue Jul 1 2025

Marianas Waters out to 40 nautical miles

PMZ150-011215-
428 AM ChST Tue Jul 1 2025

.Synopsis for Marianas Waters...A developing monsoon disturbance
to the northeast of the islands will keep a wet southwesterly
pattern across the CNMI. Combined seas of 4 to 5 ft look to
increase a foot or two today as a southwest monsoon swell and
winds build into the region. Seas are expected to gradually fall
in the latter half of the week.

$$

PMZ151-011215-
Guam Coastal Waters-
428 AM ChST Tue Jul 1 2025

.TODAY...South wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail:
Southwest 3 ft at 8 seconds, southeast 4 ft at 8 seconds and south
2 ft at 4 seconds. Scattered showers with isolated thunderstorms.
.TONIGHT...South wind 10 kt. Seas 4 to 6 ft. Wave Detail: Southwest
4 ft at 8 seconds, southeast 4 ft at 8 seconds and south 2 ft at
4 seconds. Scattered showers with isolated thunderstorms.
.WEDNESDAY...South wind 5 to 10 kt. Seas 4 to 5 ft. Wave Detail:
Southeast 4 ft at 8 seconds, southwest 3 ft at 6 seconds and south
2 ft at 4 seconds. Isolated thunderstorms.
.WEDNESDAY NIGHT...South wind 5 to 10 kt. Seas 4 to 5 ft. Wave
Detail: Southeast 4 ft at 8 seconds, southwest 3 ft at 6 seconds
and south 2 ft at 4 seconds. Isolated thunderstorms.
.THURSDAY THROUGH FRIDAY...South wind 5 to 15 kt. Seas 3 to 5 ft.
Wave Detail: Southeast 4 ft at 8 seconds, west 3 ft at 6 seconds
and south 2 ft at 4 seconds. A chance of showers with a slight
chance of thunderstorms.
.SATURDAY...South wind 5 to 15 kt. Seas 3 to 5 ft. Wave Detail:
East 4 ft at 8 seconds, west 2 ft at 6 seconds and south 3 ft at
4 seconds. A slight chance of thunderstorms.

$$

PMZ152>154-011215-
Rota Coastal Waters-Tinian Coastal Waters-Saipan Coastal Waters-
428 AM ChST Tue Jul 1 2025

.TODAY...South wind 10 kt. Seas around 5 ft. Wave Detail:
Southwest 3 ft at 8 seconds and southeast 4 ft at 8 seconds.
Scattered showers with isolated thunderstorms.
.TONIGHT...South wind 5 to 15 kt. Seas around 6 ft. Wave Detail:
Southwest 4 ft at 8 seconds, southeast 4 ft at 8 seconds and
south 2 ft at 4 seconds. Scattered showers with isolated
thunderstorms.
.WEDNESDAY...South wind 5 to 10 kt. Seas around 5 ft. Wave
Detail: Southeast 4 ft at 8 seconds, southwest 3 ft at 5 seconds
and south 2 ft at 4 seconds. Isolated thunderstorms.
.WEDNESDAY NIGHT...South wind 5 to 10 kt. Seas around 5 ft. Wave
Detail: East 4 ft at 8 seconds, southwest 3 ft at 5 seconds and
south 2 ft at 4 seconds. Isolated thunderstorms.
.THURSDAY THROUGH FRIDAY...South wind 5 to 15 kt. Seas 5 ft. Wave
Detail: East 4 ft at 8 seconds, southwest 3 ft at 5 seconds and
south 2 ft at 4 seconds. A chance of showers with a slight chance
of thunderstorms.
.SATURDAY...South wind 5 to 15 kt. Seas 5 to 6 ft. Wave Detail:
East 5 ft at 8 seconds, west 2 ft at 6 seconds and south 2 ft at
4 seconds. A chance of showers with a slight chance of
thunderstorms.

$$