555
FZMY50 PGUM 160241
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
1241 PM ChST Mon Jun 16 2025

Marianas Waters out to 40 nautical miles

PMZ150-160845-
1241 PM ChST Mon Jun 16 2025

.Synopsis for Marianas Waters...Light to gentle winds will prevail
through the coming week. Combined seas of 3 to 4 feet will subside a
bit, to between 2 and 3 feet today, then begin to build Tuesday,
reaching 3 to 5 feet Wednesday.

$$

PMZ151-160845-
Guam Coastal Waters-
1241 PM ChST Mon Jun 16 2025

Updated forecast for today for isolated thunderstorms

.THIS AFTERNOON...East wind 10 kt. Seas around 3 ft. Wave Detail:
East 3 ft at 8 seconds and east 2 ft at 4 seconds. Scattered
showers and isolated thunderstorms over western waters.
.TONIGHT...East wind 5 to 10 kt. Seas around 3 ft. Wave Detail:
East 3 ft at 8 seconds.
.TUESDAY...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.
.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 THROUGH FRIDAY...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. Isolated thunderstorms.

$$

PMZ152>154-160845-
Rota Coastal Waters-Tinian Coastal Waters-Saipan Coastal Waters-
1241 PM ChST Mon Jun 16 2025

.THIS AFTERNOON...East wind 10 kt. Seas around 3 ft. Wave Detail:
East 3 ft at 8 seconds and east 2 ft at 4 seconds.
.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...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 THROUGH FRIDAY...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.

$$