Coastal Waters Forecast
Issued by NWS Tiyan, Guam

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612
FZMY50 PGUM 031812
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
412 AM ChST Fri Apr 4 2025

Marianas Waters out to 40 nautical miles

PMZ150-041000-
412 AM ChST Fri Apr 4 2025

.Synopsis for Marianas Waters...Nearby buoys and altimetry
indicate combined seas of 5 to 7 feet. A pulse of long-period
northeast swell is beginning to move through the region and may
bump seas up by a foot or so through the end of the week. Gentle
to moderate trade winds are expected to continue through the
forecast period.

$$

PMZ151>154-041000-
MARIANAS COASTAL WATERS-
412 AM ChST Fri Apr 4 2025

.TODAY...East wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail:
Northeast 6 ft at 10 seconds, northeast 4 ft at 14 seconds and
east 3 ft at 4 seconds.
.TONIGHT...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail:
Northeast 6 ft at 10 seconds, northeast 3 ft at 13 seconds and
east 3 ft at 4 seconds.
.SATURDAY...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail:
Northeast 6 ft at 10 seconds, east 3 ft at 4 seconds and
northeast 3 ft at 13 seconds.
.SATURDAY NIGHT...East wind 15 kt. Seas 5 to 7 ft. Wave Detail:
Northeast 6 ft at 10 seconds and east 3 ft at 5 seconds.
.SUNDAY...East wind 15 kt. Seas 5 to 7 ft. Wave Detail: Northeast
6 ft at 10 seconds and east 3 ft at 5 seconds.
.MONDAY THROUGH TUESDAY...East wind 10 to 15 kt. Seas 4 to 6 ft.
Wave Detail: Northeast 5 ft at 8 seconds, east 3 ft at 4 seconds
and north 2 ft at 9 seconds.

$$