102
FZMY50 PGUM 171807
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
407 AM ChST Wed Jun 18 2025

Marianas Waters out to 40 nautical miles

PMZ150-181000-
407 AM ChST Wed Jun 18 2025

.Synopsis for Marianas Waters...Gentle winds will become moderate
by Thursday, then ease up again by the weekend. Combined seas of
3 feet will build to between 3 and 5 feet by Thursday. The trade-
wind swell is anticipated to fall by a foot or so over the weekend.

$$

PMZ151>154-181000-
MARIANAS COASTAL WATERS-
407 AM ChST Wed Jun 18 2025

.TODAY...East wind 5 to 10 kt. Seas around 3 ft. Wave Detail:
East 3 ft at 8 seconds and east 2 ft at 4 seconds.
.TONIGHT...East wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail:
East 3 ft at 8 seconds and east 2 ft at 4 seconds.
.THURSDAY...East wind 10 to 15 kt. Seas 3 to 5 ft. Wave Detail:
East 4 ft at 8 seconds and east 3 ft at 4 seconds.
.THURSDAY NIGHT...East wind 10 to 15 kt. Seas 3 to 5 ft. Wave
Detail: East 4 ft at 8 seconds and east 3 ft at 4 seconds.
.FRIDAY THROUGH SUNDAY...East wind 5 to 10 kt. Seas 3 to 5 ft.
Wave Detail: East 4 ft at 8 seconds and east 2 ft at 4 seconds.

$$