161
FZMY50 PGUM 261729
CWFGUM

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

Marianas Waters out to 40 nautical miles

PMZ150-270800-
329 AM 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 remain as such the
next few days, before potentially increasing slightly toward the end
of the week, as a northerly swell generated by distant synoptic
features strengthens.

$$

PMZ151>154-270800-
MARIANAS COASTAL WATERS-
329 AM ChST Thu Nov 27 2025

.TODAY...East wind 15 kt. Seas 6 to 7 ft. Wave Detail: East 6 ft at
9 seconds and east 3 ft at 5 seconds. Isolated thunderstorms.
.THURSDAY NIGHT...East wind 15 kt. Seas 5 to 7 ft. Wave Detail:
East 6 ft at 8 seconds and east 3 ft at 5 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 4 seconds.
.FRIDAY NIGHT...East wind 10 to 15 kt. Seas 5 to 6 ft. Wave Detail:
East 5 ft at 8 seconds and east 3 ft at 4 seconds.
.SATURDAY THROUGH SUNDAY...Southeast wind 10 to 15 kt. Seas 5 to
7 ft. Wave Detail: Northeast 6 ft at 9 seconds and southeast 3 ft
at 4 seconds. A chance of showers with a slight chance of
thunderstorms.
.MONDAY...Southeast wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail:
Northeast 6 ft at 10 seconds and southeast 3 ft at 4 seconds. A chance
of showers with a slight chance of thunderstorms.

$$