Coastal Waters Forecast
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FZMY50 PGUM 200655
CWFMY

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
500 PM ChST Fri Oct 20 2017

Marianas Waters out to 40 nautical miles

PMZ150-202100-
500 PM ChST Fri Oct 20 2017

.Synopsis for Marianas Waters...Gentle north to northwest winds and
combined seas of 9 to 12 feet are expected through the weekend.
A tropical storm watch in effect for Tinian and Saipan, tropical
storm conditions are possible on Sunday. Wind will increase to
tropical storm conditions during Sunday. Seas for Tinian and
Saipan can be higher on Sunday and Sunday night.

$$

PMZ153-154-202100-
Tinian Coastal Waters-Saipan Coastal Waters-
500 PM ChST Fri Oct 20 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...
...TROPICAL STORM WATCH IN EFFECT...

.TONIGHT...North wind 5 to 10 kt. Wind waves 2 ft or less. West
swell 8 to 10 ft and northeast 3 ft.
.SATURDAY...North wind 10 to 15 kt. Wind waves 3 to 5 ft. West
swell 8 to 10 ft and east 3 ft.
.SATURDAY NIGHT...Northwest wind 10 to 20 with gusts to 30 kt.
Wind waves 5 to 7 ft. West swell 9 to 11 ft and east 3 ft.
Widespread heavy showers and isolated thunderstorms.
.SUNDAY...Northwest wind 20 to 30 kt with gusts to 50 kt. Wind
waves 7 to 10 ft. West swell 9 to 11 ft and east 3 ft. Widespread
heavy showers and isolated thunderstorms.
.SUNDAY NIGHT...Northeast wind 10 to 20 kt. Wind waves 4 to 8 ft
West swell 10 to 12 ft and east 3 ft. Widespread heavy showers in
the evening. Isolated thunderstorms through the night.
.MONDAY...East wind 10 kt. Wind waves 2 ft or less. Northwest
swell 9 to 11 ft and east 3 ft. Isolated thunderstorms.
.TUESDAY...Southeast wind 10 to 15 kt. Wind waves 2 to 3 ft.
Northwest swell 8 to 10 ft and east 3 ft. Isolated thunderstorms.
.WEDNESDAY...Southeast wind 10 to 15 kt. Wind waves 2 to 3 ft.
Northwest swell 5 to 7 ft and east 3 ft. Isolated thunderstorms.

$$

PMZ151-152-202100-
Guam Coastal Waters-Rota Coastal Waters-
500 PM ChST Fri Oct 20 2017

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...

.TONIGHT...North wind 5 to 10 kt. Wind waves 2 ft or less. West
swell 7 to 9 ft and northeast 3 ft.
.SATURDAY...North wind 5 to 10 kt. Wind waves 2 ft or less. West
swell 7 to 9 ft and east 3 ft.
.SATURDAY NIGHT THROUGH SUNDAY NIGHT...Northwest wind 10 to 20 kt.
Wind waves 2 to 4 ft. West swell 8 to 10 ft and east 3 ft.
Isolated thunderstorms.
.MONDAY...Northeast wind 5 to 10 kt. Wind waves 2 ft or less.
Northwest swell 9 to 11 ft and east 3 ft. Isolated thunderstorms.
.TUESDAY...Southeast wind 5 to 15 kt. Wind waves 2 to 3 ft.
Northwest swell 7 to 9 ft and east 3 ft. Isolated thunderstorms.
.WEDNESDAY...Southeast wind 10 to 15 kt. Wind waves 2 to 3 ft.
Northwest swell 6 to 8 ft and east 3 ft. Isolated thunderstorms.

$$



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