Coastal Waters Forecast
Issued by NWS Tiyan, Guam

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889
FZMY50 PGUM 051806
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
406 AM ChST Thu Feb 6 2025

Marianas Waters out to 40 nautical miles

PMZ150-061000-
406 AM ChST Thu Feb 6 2025

.Synopsis for Marianas Waters...Altimetry and buoys are showing
combined seas of 10 to 12 feet near 680 miles to the west of the
Marianas. Seas are expected to build through Friday as a long-
period north swell moves through the region, with seas may
approach hazardous levels for small craft. An approaching shear
line will start to move into the Marianas this weekend, increasing
the potential for showers. Winds and seas may also start to
build, but the exact extent and timing will depend on how far the
shear line will push south.

$$

PMZ151>154-061000-
MARIANAS COASTAL WATERS-
406 AM ChST Thu Feb 6 2025

.TODAY...East wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail: East
6 ft at 9 seconds, north 4 ft at 11 seconds and east 3 ft at
5 seconds.
.TONIGHT...Northeast wind 15 to 20 kt. Seas 8 to 9 ft. Wave
Detail: North 6 ft at 10 seconds, east 5 ft at 9 seconds and
northeast 4 ft at 6 seconds. Scattered showers.
.FRIDAY...East wind 15 to 20 kt. Seas 7 to 9 ft. Wave Detail:
North 6 ft at 11 seconds, east 5 ft at 9 seconds and east 3 ft at
5 seconds.
.FRIDAY NIGHT...East wind 15 kt. Seas around 8 ft. Wave Detail:
North 6 ft at 11 seconds, northeast 5 ft at 10 seconds and east
3 ft at 5 seconds.
.SATURDAY THROUGH SUNDAY...Northeast wind 15 kt. Seas 6 to 8 ft.
Wave Detail: Northeast 5 ft at 9 seconds, north 5 ft at
11 seconds and east 3 ft at 5 seconds. A chance of showers.
.MONDAY...Northeast wind 15 to 20 kt. Seas 7 to 9 ft. Wave
Detail: Northeast 7 ft at 11 seconds and northeast 4 ft at
6 seconds. A chance of showers.

$$