474
FZMY50 PGUM 282229 CCA
CWFGUM

Coastal Waters Forecast for the Mariana Islands...CORRECTED
National Weather Service Tiyan GU
829 AM ChST Sat Nov 29 2025

Marianas Waters out to 40 nautical miles

PMZ150-290830-
829 AM ChST Sat Nov 29 2025

.Synopsis for Marianas Waters...
Moderate to fresh trades will prevail across the region through
next Wednesday, as a broad trough is expected to bring an increase
in showers over the next few to several days. Combined seas of 5
to 7 feet will build to 7 to 9 feet by Sunday night as northerly
swell arrives, generated by a distant low pressure system.

$$

PMZ151-152-290830-
Guam Coastal Waters-Rota Coastal Waters-
829 AM ChST Sat Nov 29 2025

.TODAY...East wind 15 kt. Seas 5 to 7 ft. Wave Detail: East 5 ft
at 9 seconds, east 3 ft at 5 seconds and north 2 ft at
11 seconds. Scattered showers this morning. Isolated
thunderstorms.
.TONIGHT...East wind 15 kt with gusts to 25 kt. Seas 5 to 7 ft.
Wave Detail: East 6 ft at 9 seconds, east 3 ft at 5 seconds and
north 2 ft at 12 seconds. Scattered showers with isolated
thunderstorms.
.SUNDAY...East wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail:
East 6 ft at 9 seconds, east 4 ft at 6 seconds and north 3 ft at
12 seconds. Numerous showers with isolated thunderstorms.
.SUNDAY NIGHT...East wind 15 to 20 kt. Seas 7 to 9 ft. Wave
Detail: East 7 ft at 9 seconds, east 4 ft at 6 seconds and north
4 ft at 15 seconds. Scattered showers with isolated
thunderstorms.
.MONDAY...Southeast wind 15 to 20 kt. Seas 7 to 9 ft. Wave
Detail: East 7 ft at 9 seconds, southeast 4 ft at 6 seconds and
north 4 ft at 14 seconds. Numerous showers with a slight chance
of thunderstorms.
.TUESDAY...East wind 15 kt. Seas 6 to 8 ft. Wave Detail: East
6 ft at 9 seconds, northeast 4 ft at 13 seconds and southeast
3 ft at 5 seconds. A chance of showers with a slight chance of
thunderstorms.
.WEDNESDAY...East wind 15 kt. Seas 6 to 8 ft. Wave Detail: East
6 ft at 9 seconds, east 3 ft at 5 seconds and northeast 3 ft at
13 seconds. A chance of showers.

$$

PMZ153-154-290830-
Tinian Coastal Waters-Saipan Coastal Waters-
829 AM ChST Sat Nov 29 2025

Corrected wind today

.TODAY...East wind 15 to 20 kt. Seas 5 to 7 ft. Wave Detail: East 5
ft at 9 seconds, east 3 ft at 5 seconds and north 2 ft at 12
seconds.
.TONIGHT...East wind 15 to 20 kt. Seas 5 to 7 ft. Wave Detail:
East 6 ft at 9 seconds, east 3 ft at 6 seconds and north 2 ft at
11 seconds. Scattered showers.
.SUNDAY...East wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail:
East 6 ft at 9 seconds, east 4 ft at 6 seconds and north 3 ft at
12 seconds. Scattered showers with isolated thunderstorms.
.SUNDAY NIGHT...East wind 15 to 20 kt. Seas 7 to 9 ft. Wave
Detail: East 6 ft at 9 seconds, east 4 ft at 6 seconds and north
4 ft at 15 seconds. Scattered showers with isolated
thunderstorms.
.MONDAY...East wind 15 to 20 kt. Seas 7 to 9 ft. Wave Detail:
East 7 ft at 9 seconds, east 4 ft at 6 seconds and north 4 ft at
14 seconds. A chance of showers with isolated thunderstorms.
.TUESDAY...East wind 15 to 20 kt. Seas 7 to 9 ft. Wave Detail:
East 7 ft at 9 seconds, east 4 ft at 6 seconds and northeast 4 ft
at 14 seconds.
.WEDNESDAY...East wind 15 kt. Seas 6 to 8 ft. Wave Detail: East
6 ft at 9 seconds, east 3 ft at 5 seconds and northeast 3 ft at
13 seconds.

$$