681
FZMY50 PGUM 271819
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
419 AM ChST Fri Nov 28 2025

Marianas Waters out to 40 nautical miles

PMZ150-280830-
419 AM ChST Fri Nov 28 2025

.Synopsis for Marianas Waters...
Gentle to moderate trades will prevail across the region through
tonight, then edge upward to gentle to moderate. Combined seas of
5 to 7 feet will gradually fall to around 5 feet over the next
few days, before potentially increasing toward the end of the
weekend, as a northerly swell generated by distant storm that
moved eastward from Japan a day or two ago.

$$

PMZ151>154-280830-
MARIANAS COASTAL WATERS-
419 AM ChST Fri Nov 28 2025

.TODAY...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: East
6 ft at 8 seconds and east 3 ft at 5 seconds.
.TONIGHT...East wind 10 to 15 kt. Seas around 6 ft. Wave Detail:
East 5 ft at 8 seconds and east 3 ft at 4 seconds.
.SATURDAY...East wind 15 to 20 kt. Seas around 6 ft. Wave Detail:
Northeast 5 ft at 9 seconds and east 3 ft at 5 seconds. Scattered
showers with isolated thunderstorms.
.SATURDAY NIGHT...East wind 15 kt. Seas 4 to 6 ft. Wave Detail:
East 3 ft at 5 seconds, northeast 3 ft at 8 seconds and north 2
ft at 15 seconds. Scattered showers with isolated thunderstorms.
.SUNDAY THROUGH TUESDAY...Southeast wind 10 to 20 kt. Seas 5 to
7 ft. Wave Detail: Northeast 6 ft at 9 seconds, east 4 ft at
6 seconds and north 2 ft at 15 seconds. A chance of showers with
a slight chance of thunderstorms.

$$