957
FZMY50 PGUM 160518
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
318 PM ChST Mon Jun 16 2025

Marianas Waters out to 40 nautical miles

PMZ150-162000-
318 PM ChST Mon Jun 16 2025

.Synopsis for Marianas Waters...Light to gentle winds will become
moderate on Wednesday. Combined seas of 3 feet will build to
between 3 and 5 ft by Wednesday night. Light winds and daytime
heating, along with a TUTT cell just west of Guam, will generate
isolated thunderstorms in the southwestern and western Guam
waters through Wednesday night.

$$

PMZ151-162000-
Guam Coastal Waters-
318 PM ChST Mon Jun 16 2025

.TONIGHT...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.
.TUESDAY...East wind 10 kt. Seas around 3 ft. Wave Detail:
East 3 ft at 8 seconds and east 2 ft at 4 seconds. Isolated
thunderstorms.
.TUESDAY NIGHT...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.
Isolated thunderstorms.
.WEDNESDAY...East wind 10 kt. Seas around 3 ft. Wave Detail: East
3 ft at 8 seconds and east 2 ft at 4 seconds. Isolated
thunderstorms.
.WEDNESDAY NIGHT...East wind 5 to 15 kt. Seas 3 to 4 ft. Wave
Detail: East 3 ft at 4 seconds and east 3 ft at 8 seconds. A
slight chance of thunderstorms.
.THURSDAY THROUGH SATURDAY...East wind 5 to 15 kt. Seas 3 to
5 ft. Wave Detail: East 4 ft at 8 seconds and east 3 ft at
4 seconds.

$$

PMZ152>154-162000-
Rota Coastal Waters-Tinian Coastal Waters-Saipan Coastal Waters-
318 PM ChST Mon Jun 16 2025

.TONIGHT...East wind 10 kt. Seas around 3 ft. Wave Detail: East
3 ft at 8 seconds and east 2 ft at 4 seconds.
.TUESDAY...East wind 10 kt. Seas around 3 ft. Wave Detail: East
3 ft at 8 seconds and east 2 ft at 4 seconds.
.TUESDAY NIGHT AND WEDNESDAY...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.
.WEDNESDAY NIGHT...East wind 5 to 15 kt. Seas around 4 ft. Wave
Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds.
.THURSDAY THROUGH SATURDAY...East wind 5 to 15 kt. Seas 3 to
5 ft. Wave Detail: East 4 ft at 8 seconds and east 2 ft at
4 seconds.

$$