069
FZMY50 PGUM 120556
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
356 PM ChST Mon May 12 2025

Marianas Waters out to 40 nautical miles

PMZ150-122200-
356 PM ChST Mon May 12 2025

.Synopsis for Marianas Waters...Moderate trade winds will preveil
through the week with 2 exceptions of moderate to fresh winds
during the day on Tuesday and Wednesday. Combined seas of 5 to 7
feet will build to between 6 and 8 feet as a east-northeast swell
will move into the region tonight. The secondary swell is
anticipated to diminish by the weekend. Combined seas are
expected to fall to 4 to 6 feet by the weekend. Sea conditions
will remain benign through the period.

$$

PMZ151>154-122200-
MARIANAS COASTAL WATERS-
356 PM ChST Mon May 12 2025

.TONIGHT...East wind 15 kt. Seas 5 to 7 ft. Wave Detail:
Northeast 5 ft at 8 seconds and east 3 ft at 5 seconds.
.TUESDAY...East wind 15 kt. Seas 6 to 8 ft. Wave Detail: East
6 ft at 9 seconds, east 3 ft at 5 seconds and northeast 3 ft at
11 seconds.
.TUESDAY NIGHT...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave
Detail: East 6 ft at 9 seconds, east 3 ft at 5 seconds and
northeast 3 ft at 11 seconds.
.WEDNESDAY...East wind 15 kt. Seas 4 to 6 ft. Wave Detail: East
6 ft at 9 seconds, east 3 ft at 5 seconds and northeast 2 ft at
11 seconds.
.WEDNESDAY NIGHT...East wind 15 kt. Seas 4 to 6 ft. Wave Detail:
East 5 ft at 8 seconds, east 3 ft at 5 seconds and northeast 3 ft
at 11 seconds.
.THURSDAY THROUGH SATURDAY...East wind 15 kt. Seas 4 to 6 ft.
Wave Detail: East 5 ft at 8 seconds and east 3 ft at 5 seconds.

$$