FZMY50 PGUM 070613

CWFGUM



Coastal Waters Forecast for the Mariana Islands

National Weather Service Tiyan GU

413 PM ChST Mon Apr 7 2025



Marianas Waters out to 40 nautical miles



PMZ150-072215-

413 PM ChST Mon Apr 7 2025



.Synopsis for Marianas Waters...Nearby fixed buoys and SOFAR

drifting buoys indicate combined seas of 4 to 6 feet, while 

altimetry data peaks at around 7 feet east of the Marianas. Seas 

will continue to trend downward, falling by another foot or two 

through the middle of the week. Trade winds will come down as 

well, becoming mostly gentle overnight. Winds are expected to 

remain light to gentle through the middle of the week before 

coming back up around Thursday.



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PMZ151>154-072215-

MARIANAS COASTAL WATERS-

413 PM ChST Mon Apr 7 2025



.TONIGHT...East wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail:

East 5 ft at 8 seconds, east 2 ft at 4 seconds and north 2 ft at

9 seconds. 

.TUESDAY...East wind 5 to 10 kt. Seas 4 to 6 ft. Wave Detail:

East 5 ft at 9 seconds, east 2 ft at 4 seconds and north 2 ft at

8 seconds. 

.TUESDAY NIGHT...East wind 5 to 10 kt. Seas 4 to 5 ft. Wave

Detail: East 4 ft at 9 seconds, east 2 ft at 4 seconds and

northeast 2 ft at 13 seconds. 

.WEDNESDAY...East wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail:

East 4 ft at 9 seconds, east 2 ft at 4 seconds and northeast 2 ft

at 12 seconds. 

.WEDNESDAY NIGHT...East wind 5 to 10 kt. Seas 3 to 4 ft. Wave 

Detail: East 3 ft at 8 seconds, east 2 ft at 4 seconds and north 2

ft at 9 seconds. 

.THURSDAY THROUGH SATURDAY...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.



$$