442
FZMY50 PGUM 121817
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
417 AM ChST Thu Nov 13 2025

Marianas Waters out to 40 nautical miles

PMZ150-130830-
417 AM ChST Thu Nov 13 2025

.Synopsis for Marianas Waters...
Gentle to moderate trade winds are expected to prevail through
Friday night, and will become moderate to fresh for the weekend
and beginning of next week. Combined seas of 4 to 6 feet will
persist through Friday night, the gradually build over the weekend
and the beginning of next week in response to the building winds.

$$

PMZ151>154-130830-
MARIANAS COASTAL WATERS-
417 AM ChST Thu Nov 13 2025

.TODAY...East wind 10 to 15 kt. Seas around 5 ft. Wave Detail:
East 4 ft at 8 seconds, east 3 ft at 4 seconds and north 2 ft at
11 seconds.
.TONIGHT...East wind 10 kt. Seas 4 to 6 ft. Wave Detail: East
5 ft at 8 seconds, east 2 ft at 4 seconds and north 2 ft at
11 seconds.
.FRIDAY...East wind 10 kt. Seas around 5 to 6 ft. Wave Detail:
East 6 ft at 8 seconds, east 2 ft at 4 seconds and north 2 ft at
11 seconds.
.FRIDAY NIGHT...East wind 10 to 15 kt. Seas around 6 to 7 ft.
Wave Detail: Northeast 6 ft at 8 seconds and east 3 ft at 4
seconds.
.SATURDAY THROUGH MONDAY...East wind 15 to 20 kt. Seas 6 to 7 ft.
Wave Detail: East 6 ft at 8 seconds and east 4 ft at 4 seconds.

$$