FZMY50 PGUM 061741

CWFGUM



Coastal Waters Forecast for the Mariana Islands

National Weather Service Tiyan GU

341 AM ChST Mon Apr 7 2025



Marianas Waters out to 40 nautical miles



PMZ150-071000-

341 AM ChST Mon Apr 7 2025



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

drifting buoys indicate combined seas of 5 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 so

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

well, becoming mostly gentle by tonight. Winds are expected to 

remain light to gentle through the middle of the week before

coming back up by the weekend.



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PMZ151>154-071000-

MARIANAS COASTAL WATERS-

341 AM ChST Mon Apr 7 2025



.TODAY...East wind 10 to 15 kt. Seas 5 to 6 ft. Wave Detail:

Northeast 5 ft at 9 seconds, east 3 ft at 4 seconds and north

2 ft at 9 seconds. 

.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 6 ft. Wave

Detail: East 5 ft at 9 seconds, east 2 ft at 4 seconds and

northeast 2 ft at 13 seconds. 

.WEDNESDAY THROUGH THURSDAY...East wind 5 to 15 kt. Seas 3 to

5 ft. Wave Detail: East 4 ft at 9 seconds, east 3 ft at 4 seconds

and northeast 2 ft at 12 seconds. 

.FRIDAY...East wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail:

East 5 ft at 8 seconds and east 3 ft at 4 seconds. 



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