508
FZMY50 PGUM 240630
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
430 PM ChST Mon Nov 24 2025

Marianas Waters out to 40 nautical miles

PMZ150-242300-
430 PM ChST Mon Nov 24 2025

.Synopsis for Marianas Waters...
Moderate to fresh trade winds will prevail across the region
tonight, gradually diminishing thereafter, becoming gentle to
moderate through the latter half of the week. Combined seas of 7
to 9 feet will gradually decrease by 1 to 2 feet toward the end of
the week, as the elevated trade swell and wind waves continue to
become more relaxed. Although sea conditions remain below levels
hazardous to small craft, seas will remain choppy for the next few
days, especially over eastern coastal waters.

$$

PMZ151>154-242300-
MARIANAS COASTAL WATERS-
430 PM ChST Mon Nov 24 2025

.TONIGHT...East wind 15 to 20 kt. Seas 7 to 9 ft. Wave Detail:
East 8 ft at 9 seconds and east 4 ft at 6 seconds.
.TUESDAY AND TUESDAY NIGHT...East wind 15 kt. Seas 6 to 8 ft.
Wave Detail: East 7 ft at 9 seconds and east 3 ft at 5 seconds.
.WEDNESDAY AND WEDNESDAY NIGHT...East wind 15 kt. Seas 6 to 8 ft.
Wave Detail: East 7 ft at 9 seconds and east 3 ft at 5 seconds.
Scattered showers.
.THURSDAY...East wind 15 kt. Seas 6 to 8 ft. Wave Detail: East 7
ft at 8 seconds and east 3 ft at 5 seconds. Scattered showers and
isolated thunderstorms.
.FRIDAY...East wind 15 kt. Seas 5 to 7 ft. Wave Detail: East 6 ft
at 8 seconds and east 3 ft at 5 seconds.
.SATURDAY...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail:
Northeast 6 ft at 9 seconds and east 3 ft at 5 seconds. A chance
of showers with a slight chance of thunderstorms.

$$