FZMY50 PGUM 030636

CWFGUM



Coastal Waters Forecast for the Mariana Islands

National Weather Service Tiyan GU

436 PM ChST Tue Feb 3 2026



Marianas Waters out to 40 nautical miles



PMZ150-032200-

436 PM ChST Tue Feb 3 2026



.Synopsis for Marianas Waters...The shear line which brought 

gusty showers and hazardous marine conditions to the Marianas has 

shifted to the north to around Pagan. Outer bands of Invest 94W 

and incoming trough is expected to bring showers to the region 

over the next 36 hours or so. Seas are expected to gradually 

subside in the latter half of the week, decreasing to 4 to 6 feet 

as early as Thursday night.



$$



PMZ151-152-032200-

Guam Coastal Waters-Rota Coastal Waters-

436 PM ChST Tue Feb 3 2026



.TONIGHT...East wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail:

East 6 ft at 8 seconds, north 3 ft at 10 seconds and east 2 ft at

4 seconds. Scattered showers becoming widespread locally heavy

around midnight. 

.WEDNESDAY...East wind 10 kt. Seas 6 to 7 ft. Wave Detail: East

6 ft at 8 seconds, north 3 ft at 11 seconds and east 2 ft at

4 seconds. Widespread heavy showers with isolated thunderstorms. 

.WEDNESDAY NIGHT...Northeast wind 5 to 15 kt. Seas 6 to 8 ft.

Wave Detail: East 6 ft at 8 seconds, north 4 ft at 11 seconds and

northeast 2 ft at 4 seconds. Widespread locally heavy showers

with isolated thunderstorms. 

.THURSDAY...East wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail:

East 5 ft at 8 seconds, north 4 ft at 10 seconds and east 3 ft at

5 seconds. Scattered showers with isolated thunderstorms. 

.THURSDAY NIGHT...East wind 15 kt. Seas 5 to 6 ft. Wave Detail:

East 4 ft at 8 seconds, north 4 ft at 10 seconds and east 3 ft at

5 seconds. Scattered showers. 

.FRIDAY...East wind 15 kt. Seas 5 to 6 ft. Wave Detail: East 4 ft

at 8 seconds, north 4 ft at 9 seconds and east 3 ft at 5 seconds.

A chance of showers. 

.SATURDAY AND SUNDAY...Southeast wind 10 to 15 kt. Seas 4 to

6 ft. Wave Detail: East 4 ft at 8 seconds, north 4 ft at

13 seconds and east 3 ft at 5 seconds. A chance of showers with a

slight chance of thunderstorms.  



$$



PMZ153-154-032200-

Tinian Coastal Waters-Saipan Coastal Waters-

436 PM ChST Tue Feb 3 2026



.TONIGHT...East wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail:

East 6 ft at 8 seconds, east 3 ft at 5 seconds and north 3 ft at

10 seconds. Scattered showers with isolated thunderstorms. 

.WEDNESDAY...East wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail:

Northeast 6 ft at 8 seconds, east 3 ft at 4 seconds and north

3 ft at 11 seconds. Numerous heavy showers with isolated

thunderstorms. 

.WEDNESDAY NIGHT...East wind 10 to 15 kt. Seas 6 to 8 ft. Wave

Detail: Northeast 6 ft at 8 seconds, north 4 ft at 11 seconds and

east 3 ft at 5 seconds. Scattered showers with isolated

thunderstorms. 

.THURSDAY...East wind 15 kt. Seas 6 to 7 ft. Wave Detail:

Northeast 5 ft at 8 seconds, north 4 ft at 10 seconds and east

3 ft at 5 seconds. Scattered showers. 

.THURSDAY NIGHT...East wind 15 kt. Seas 5 to 6 ft. Wave Detail:

East 4 ft at 8 seconds, north 4 ft at 10 seconds and east 3 ft at

4 seconds. Scattered showers. 

.FRIDAY...East wind 15 kt. Seas 5 to 6 ft. Wave Detail: East 4 ft

at 8 seconds, north 4 ft at 9 seconds and east 3 ft at 5 seconds.

.SATURDAY THROUGH SUNDAY...Southeast wind 10 to 15 kt. Seas 5 to

7 ft. Wave Detail: East 5 ft at 9 seconds, north 4 ft at

13 seconds and east 3 ft at 5 seconds. A chance of showers with a

slight chance of thunderstorms.  



$$