FZMY50 PGUM 031847

CWFGUM



Coastal Waters Forecast for the Mariana Islands

National Weather Service Tiyan GU

447 AM ChST Wed Feb 4 2026



Marianas Waters out to 40 nautical miles



PMZ150-040830-

447 AM ChST Wed Feb 4 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 an incoming trough are expected to bring showers to the 

region over the next 12 to 24 hours. Seas are expected to 

gradually subside in the latter half of the week, decreasing to 4 

to 6 feet by Saturday.



$$



PMZ151-152-040830-

Guam Coastal Waters-Rota Coastal Waters-

447 AM ChST Wed Feb 4 2026



.TODAY...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.

Scattered showers with isolated thunderstorms.

.TONIGHT...Northeast wind 5 to 15 kt. Seas 6 to 8 ft. Wave

Detail: East 5 ft at 8 seconds, north 4 ft at 11 seconds and

northeast 2 ft at 4 seconds.

.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.

.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.

.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.



$$



PMZ153-154-040830-

Tinian Coastal Waters-Saipan Coastal Waters-

447 AM ChST Wed Feb 4 2026



.TODAY...East wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail:

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

3 ft at 11 seconds. Scattered showers with isolated

thunderstorms. 

.TONIGHT...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. 

.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. 

.THURSDAY NIGHT...East wind 15 kt. Seas 5 to 7 ft. Wave Detail:

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

4 seconds. 

.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 AND SUNDAY...Southeast wind 10 to 15 kt. Seas 4 to 6 

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.



$$