028
FZMY50 PGUM 061757
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
357 AM ChST Sun Dec 7 2025

Marianas Waters out to 40 nautical miles

PMZ150-070900-
357 AM ChST Sun Dec 7 2025

.Synopsis for Marianas Waters...
Gentle to moderate trades will prevail the next few days. Combined
seas of 6 to 8 feet are expected to taper down a foot by tonight,
as the seasonal trade swell and secondary northeasterly swell
weaken slightly. Winds are expected to increase to moderate to
fresh later this upcoming week as shear line fragments shift
southward into the Marianas.

$$

PMZ151>154-070900-
MARIANAS COASTAL WATERS-
357 AM ChST Sun Dec 7 2025

.TODAY...East wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail: East
5 ft at 10 seconds, north 4 ft at 10 seconds, northeast 3 ft at
12 seconds and east 3 ft at 4 seconds.
.TONIGHT...Northeast wind 10 kt. Seas 5 to 7 ft. Wave
Detail: East 4 ft at 9 seconds, north 3 ft at 10 seconds,
northeast 3 ft at 12 seconds and northeast 2 ft at 4 seconds.
.MONDAY...East wind 10 kt. Seas 5 to 7 ft. Wave Detail: East 4 ft
at 9 seconds, north 3 ft at 10 seconds, northeast 2 ft at 4
seconds and northeast 2 ft at 12 seconds.
.MONDAY NIGHT...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail:
East 4 ft at 9 seconds, north 4 ft at 10 seconds, east 3 ft at 4
seconds and northeast 2 ft at 12 seconds.
.TUESDAY...East wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail:
East 5 ft at 9 seconds, north 4 ft at 10 seconds and east 3 ft at
4 seconds.
.WEDNESDAY AND THURSDAY...East wind 15 to 20 kt. Seas 6 to 8 ft.
Wave Detail: East 5 ft at 9 seconds, north 4 ft at 10 seconds and
east 3 ft at 4 seconds.

$$