Coastal Waters Forecast
Issued by NWS Tiyan, Guam

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775
FZMY50 PGUM 040600
CWFGUM

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

Marianas Waters out to 40 nautical miles

PMZ150-042100-
400 PM ChST Fri Apr 4 2025

.Synopsis for Marianas Waters...Buoys and altimetry indicate
combined seas of 5 to 7 feet continue across the waters. Seas are
expected to begin to slowly subside by early next week, dropping
to between 3 and 5 feet around midweek. Gentle to moderate trade
winds are expected to continue through the forecast period.

$$

PMZ151>154-042100-
MARIANAS COASTAL WATERS-
400 PM ChST Fri Apr 4 2025

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

$$