986
FZMY50 PGUM 131804
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
404 AM ChST Mon Jul 14 2025

Marianas Waters out to 40 nautical miles

PMZ150-141215-
404 AM ChST Mon Jul 14 2025

.Synopsis for Marianas Waters...Gentle to moderate southeast
winds will continue across the region for most of the week, with
seas of 4 to 6 feet building to 5 to 7 feet by Thursday as the
west-southwest swell builds. A TUTT cell near Wake Island and a
monsoon trough in western Micronesia will both near the Marianas
later this week, increasing the potential for showers and
thunderstorms.

$$

PMZ151>154-141215-
MARIANAS COASTAL WATERS-
404 AM ChST Mon Jul 14 2025

.TODAY...Southeast wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail:
East 4 ft at 9 seconds, southeast 3 ft at 4 seconds and west 2 ft
at 7 seconds.
.TONIGHT...Southeast wind 10 to 15 kt. Seas 4 to 5 ft. Wave
Detail: East 4 ft at 9 seconds, west 2 ft at 7 seconds and
southeast 2 ft at 4 seconds. Scattered showers.
.TUESDAY...Southeast wind 10 to 15 kt. Seas 4 to 5 ft. Wave
Detail: East 4 ft at 9 seconds, southeast 3 ft at 5 seconds and
west 2 ft at 7 seconds. Scattered showers Guam and Rota.
.TUESDAY NIGHT...Southeast wind 10 to 15 kt. Seas 4 to 5 ft. Wave
Detail: East 4 ft at 9 seconds, southeast 3 ft at 5 seconds and
west 2 ft at 7 seconds. Scattered showers Guam and Rota.
.WEDNESDAY...East wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail:
East 4 ft at 9 seconds, west 3 ft at 8 seconds and southeast 3 ft
at 5 seconds. Scattered showers Guam and Rota during the day.
Scattered showers and isolated thunderstorms at night.
.THURSDAY THROUGH FRIDAY...Southeast wind 10 to 15 kt. Seas 5 to
7 ft. Wave Detail: East 4 ft at 8 seconds, west 4 ft at 8 seconds
and east 3 ft at 5 seconds. A chance of showers with a slight
chance of thunderstorms.

$$