038
FZMY50 PGUM 270600
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
400 PM ChST Thu Nov 27 2025

Marianas Waters out to 40 nautical miles

PMZ150-272115-
400 PM ChST Thu Nov 27 2025

.Synopsis for Marianas Waters...
Gentle to moderate trades will prevail across the region through the
end of the week. 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 synoptic features strengthens.

$$

PMZ151>154-272115-
MARIANAS COASTAL WATERS-
400 PM ChST Thu Nov 27 2025

...SEAS MAY RAPIDLY INCREASE BEGINNING SUNDAY AS A NORTH SWELL
APPROACHES THE REGION...

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

$$