Coastal Waters Forecast
Issued by NWS Tiyan, Guam

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000
FZMY50 PGUM 211933
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
533 AM ChST Fri Mar 22 2024

Marianas Waters out to 40 nautical miles

PMZ150-220900-
533 AM ChST Fri Mar 22 2024

.Synopsis for Marianas Waters...Moderate to fresh trade winds will
prevail today, increasing steadily thereafter and becoming fresh to
strong during the weekend. Combined seas of 4 to 6 feet are expected
to increase significantly starting late tonight, as a long period
northerly swell builds into the region and a descending shear line
brings a quick rise in northeast swell and winds that could bring
near-gale force gusts during the weekend. This will produce sea
conditions hazardous to small craft. A Small Craft Advisory remains
in effect, and is valid from this evening through late Sunday night.


$$

PMZ151-152-220900-
Guam Coastal Waters-Rota Coastal Waters-
533 AM ChST Fri Mar 22 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH EARLY
MONDAY MORNING...

.TODAY...Northeast wind 15 to 20 kt. Wind waves 2 to 3 ft. North
swell 6 ft.
.TONIGHT...Northeast wind 20 kt. Wind waves 4 to 5 ft. North swell
7 to 8 ft and east 3 ft.
.SATURDAY AND SATURDAY NIGHT...Northeast wind 20 to 25 kt. Wind
waves 5 to 7 ft. North swell 7 to 8 ft and north 3 to 4 ft. Scattered
showers.
.SUNDAY...East wind 15 to 25 kt. Wind waves 5 to 7 ft. Northeast
swell 7 to 8 ft and north 4 to 6 ft. Scattered showers.
.MONDAY AND TUESDAY...East wind 15 to 20 kt. Wind waves 4 to 5 ft.
Northeast swell 6 to 7 ft and north 3 to 5 ft.

$$

PMZ153-154-220900-
Tinian Coastal Waters-Saipan Coastal Waters-
533 AM ChST Fri Mar 22 2024

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH EARLY
MONDAY MORNING...

.TODAY...Northeast wind 15 to 20 kt. Wind waves 3 to 4 ft. North
swell 6 ft.
.TONIGHT...Northeast wind 20 kt with gusts to 30 kt. Wind waves 5 to
6 ft. North swell 7 to 8 ft and east 3 to 4 ft.
.SATURDAY AND SATURDAY NIGHT...Northeast wind 20 to 25 kt. Wind
waves 6 to 7 ft. North swell 6 to 7 ft and north 3 to 5 ft. Scattered
showers.
.SUNDAY...Northeast wind 20 to 25 kt. Wind waves 5 to 7 ft.
Northeast swell 7 ft and north 4 to 6 ft.
.MONDAY AND TUESDAY...East wind 15 to 20 kt. Wind waves 4 to 5 ft.
East swell 5 to 7 ft and north 3 to 5 ft.


$$


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