Coastal Waters Forecast
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FZMY50 PGUM 211918
CWFMY

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
600 AM ChST Sun Oct 22 2017

Marianas Waters out to 40 nautical miles

PMZ150-220900-
600 AM ChST Sun Oct 22 2017

.Synopsis for Marianas Waters...Large long-period swell from distant
Super Typhoon Lan will continue to move through the Marianas.
Increased seas in the CNMI have prompted a Hazardous Seas Warning
while a Small Craft Advisory remains in effect for Guam waters.
Tropical Depression 27W, southeast of the Marianas, is expected to
pass just south of Guam on Tuesday and will bring stronger winds and
rougher seas beginning Monday. Showers and thunderstorms will develop
across the region today and increase Monday night.

$$

PMZ151-220900-
Guam Coastal Waters-
600 AM ChST Sun Oct 22 2017

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

.TODAY...Northeast wind 10 to 15 kt. Wind waves 2 to 3 ft. West swell
10 to 12 ft and northeast 4 ft. Scattered showers and isolated
thunderstorms.
.TONIGHT...North wind 5 to 15 kt. Wind waves 2 to 3 ft. West swell 9
to 11 ft and northeast 4 ft. Scattered showers and isolated
thunderstorms.
.MONDAY...Northeast wind 5 to 15 kt. Wind waves 2 to 3 ft. West swell
9 to 11 ft and east 4 ft. Isolated thunderstorms.
.MONDAY NIGHT...East wind 15 kt. Wind waves 3 ft. Northwest swell 8
to 10 ft and east 4 ft. Scattered showers and isolated thunderstorms.
.TUESDAY...Southeast wind 15 to 25 kt with gusts to 35 kt. Wind waves
4 to 7 ft. Mixed swell northwest 7 to 9 ft and east 5 ft. Occasional
showers and isolated thunderstorms.
.WEDNESDAY...South wind 15 to 25 kt. Wind waves 4 to 6 ft. Mixed
swell northwest 6 to 8 ft and south 7 to 8 ft. Scattered showers and
isolated thunderstorms.
.THURSDAY...South wind 5 to 15 kt. Wind waves 2 to 3 ft. Mixed swell
northwest 3 to 5 ft and south 5 to 6 ft. Isolated thunderstorms.

$$

PMZ152>154-220900-
Rota Coastal Waters-Tinian Coastal Waters-Saipan Coastal Waters-
600 AM ChST Sun Oct 22 2017

...HAZARDOUS SEAS WARNING IN EFFECT THROUGH EARLY MONDAY MORNING...
...SMALL CRAFT ADVISORY IN EFFECT BEGINNING EARLY MONDAY MORNING...

.TODAY...Northeast wind 5 to 15 kt. Wind waves 2 to 3 ft. West swell
10 to 13 ft and northeast 4 ft. Scattered showers and isolated
thunderstorms.
.TONIGHT...Northeast wind 5 to 10 kt. Wind waves 2 ft or less. West
swell 10 to 12 ft and northeast 4 ft. Scattered showers and isolated
thunderstorms.
.MONDAY...East wind 5 to 15 kt. Wind waves 2 to 3 ft. West swell 9 to
12 ft and east 4 ft. Isolated thunderstorms.
.MONDAY NIGHT...East wind 10 to 15 kt. Wind waves 2 to 3 ft.
Northwest swell 8 to 10 ft and east 4 ft. Scattered showers and
isolated thunderstorms.
.TUESDAY...Southeast wind 15 to 25 kt with gusts to 35 kt. Wind waves
4 to 7 ft. Mixed swell northwest 7 to 9 ft and east 5 ft. Occasional
showers and isolated thunderstorms.
.WEDNESDAY...South wind 15 to 25 kt. Wind waves 4 to 6 ft. Mixed
swell northwest 6 to 8 ft and south 7 to 8 ft. Scattered showers and
isolated thunderstorms.
.THURSDAY...South wind 5 to 15 kt. Wind waves 2 to 3 ft. Mixed swell
northwest 3 to 5 ft and south 5 to 6 ft. Isolated thunderstorms.

$$



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