817
FZMY50 PGUM 221605
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
205 AM ChST Sun Nov 23 2025

Marianas Waters out to 40 nautical miles

PMZ150-230800-
205 AM ChST Sun Nov 23 2025

.Synopsis for Marianas Waters...
Moderate to fresh trade winds will prevail across the region through
at least midweek. Combined seas of 7 to 9 feet are likely to
persist for at least the next few days, as elevated trade swell
and localized wind waves persist. A slight increase in winds and
gusts today will contribute to additional choppiness.

$$

PMZ151>154-230800-
MARIANAS COASTAL WATERS-
205 AM ChST Sun Nov 23 2025

.TODAY...East wind 15 to 20 kt with occasional gusts to 30 kt.
Seas 7 to 9 ft. Wave Detail: East 8 ft at 9 seconds and east 5 ft
at 6 seconds.
.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.
.MONDAY...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.
.MONDAY NIGHT...East wind 15 to 20 kt. Seas 7 to 8 ft. Wave Detail:
East 7 ft at 9 seconds and east 4 ft at 6 seconds.
.TUESDAY...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...East wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail:
East 7 ft at 9 seconds and east 4 ft at 6 seconds.
.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.

$$