908
FZMY50 PGUM 280539
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
339 PM ChST Fri Mar 28 2025

Marianas Waters out to 40 nautical miles

PMZ150-282200-
339 PM ChST Fri Mar 28 2025

.Synopsis for Marianas Waters...
Benign marine conditions will continue through the remainder of
the week as moderate to occasionally fresh trades prevail. Nearby
fixed buoys, SOFAR drifting buoys, and altimetry data show
combined seas between 3 and 5 feet. This weekend, trade swell and
wind waves will begin to increase in response to a broad increase
in trade winds across the region, bringing combined seas into the
6 to 8 foot range on Sunday. Around the middle of next week, seas
subside back down to 5 to 7 feet, with slight decreases in trade
winds and swell while a small northeast swell moves through the
region.

$$

PMZ151>154-282200-
MARIANAS COASTAL WATERS-
339 PM ChST Fri Mar 28 2025

.TONIGHT...East wind 15 kt. Seas around 5 ft. Wave Detail: East
5 ft at 8 seconds and east 3 ft at 5 seconds.
.SATURDAY...East wind 15 to 20 kt. Seas 4 to 6 ft. Wave Detail:
East 5 ft at 8 seconds and east 4 ft at 5 seconds.
.SATURDAY NIGHT...East wind 15 to 20 kt. Seas 6 to 8 ft. Wave
Detail: East 6 ft at 8 seconds and east 4 ft at 6 seconds.
.SUNDAY AND SUNDAY NIGHT...East wind 15 to 20 kt. Seas 6 to 8 ft.
Wave Detail: East 7 ft at 8 seconds and east 4 ft at 6 seconds.
.MONDAY...East wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail:
East 6 ft at 8 seconds, east 4 ft at 6 seconds and northeast 3 ft
at 12 seconds.
.TUESDAY THROUGH WEDNESDAY...East wind 15 kt. Seas 5 to 7 ft.
Wave Detail: East 6 ft at 9 seconds, east 3 ft at 5 seconds and
northeast 3 ft at 12 seconds.

$$