Coastal Waters Forecast
Issued by NWS Tiyan, Guam

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469
FZMY50 PGUM 031830
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
430 AM ChST Wed Jun 4 2025

Marianas Waters out to 40 nautical miles

PMZ150-041000-
430 AM ChST Wed Jun 4 2025

.Synopsis for Marianas Waters...Gentle to moderate trades will
prevail for much of this week. Combined seas of 4 to 5 feet will
persist the next few days, dropping a foot during the weekend.

$$

PMZ151>154-041000-
MARIANAS COASTAL WATERS-
430 AM ChST Wed Jun 4 2025

.TODAY...East wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail:
East 4 ft at 8 seconds and east 3 ft at 4 seconds. Scattered
showers with isolated thunderstorms. Locally heavy showers
possible.
.TONIGHT...Southeast wind 5 to 10 kt. Seas 3 to 5 ft. Wave
Detail: East 4 ft at 8 seconds and southeast 2 ft at 4 seconds.
Scattered showers with isolated thunderstorms.
.THURSDAY...Southeast wind 10 kt. Seas 3 to 5 ft. Wave Detail:
East 4 ft at 8 seconds and southeast 2 ft at 4 seconds. Scattered
showers.
.THURSDAY NIGHT...Southeast wind 10 kt. Seas 3 to 5 ft. Wave
Detail: East 4 ft at 8 seconds and southeast 2 ft at 4 seconds.
Scattered showers with isolated thunderstorms.
.FRIDAY THROUGH SATURDAY...East wind 10 kt. Seas 3 to 4 ft. Wave
Detail: East 4 ft at 8 seconds and southeast 2 ft at 4 seconds. A
chance of showers with a slight chance of thunderstorms.
.SUNDAY...East wind 10 kt. Seas 3 to 4 ft. Wave Detail: East 3 ft
at 8 seconds and east 2 ft at 4 seconds. A chance of showers.

$$