Coastal Waters Forecast
Issued by NWS Tiyan, Guam

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656
FZMY50 PGUM 071804
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
404 AM ChST Sat Feb 8 2025

Marianas Waters out to 40 nautical miles

PMZ150-081215-
404 AM ChST Sat Feb 8 2025

.Synopsis for Marianas Waters...Seas continue to subside and will
be 6 to 8 feet this weekend. Another large northerly swell arrives
by late Sunday night into Monday morning and seas are expected to
become hazardous to small craft. Gentle to moderate winds
increase to moderate to fresh by tonight for Tinian and Saipan
and by Sunday night for Guam and Rota. Winds look to increase
further and could also become hazardous to small craft by around
Tuesday.

$$

PMZ151-152-081215-
Guam Coastal Waters-Rota Coastal Waters-
404 AM ChST Sat Feb 8 2025

.TODAY...East wind 10 to 15 kt. Seas 7 to 8 ft. Wave Detail:
Northeast 6 ft at 8 seconds, northwest 5 ft at 11 seconds and
east 3 ft at 4 seconds.
.TONIGHT...East wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail:
Northeast 5 ft at 8 seconds, northwest 4 ft at 10 seconds and
east 3 ft at 5 seconds.
.SUNDAY...East wind 15 kt. Seas 6 to 7 ft. Wave Detail: Northeast
5 ft at 8 seconds, northwest 4 ft at 10 seconds and east 3 ft at
5 seconds.
.SUNDAY NIGHT...East wind 15 to 20 kt. Seas 6 to 7 ft. Wave
Detail: North 5 ft at 13 seconds, east 3 ft at 5 seconds and
northeast 3 ft at 8 seconds. Scattered showers.
.MONDAY...Northeast wind 15 to 20 kt. Seas 8 to 10 ft. Wave
Detail: North 7 ft at 12 seconds, northeast 5 ft at 6 seconds and
northeast 4 ft at 10 seconds. A chance of showers.
.TUESDAY...Northeast wind 20 kt. Seas 7 to 9 ft. Wave Detail:
Northeast 6 ft at 8 seconds, northeast 5 ft at 6 seconds and north
6 ft at 10 seconds.
.WEDNESDAY...Northeast wind 20 kt. Seas 9 to 11 ft. Wave Detail:
North 6 ft at 15 seconds, northeast 5 ft at 6 seconds and
northeast 7 ft at 8 seconds.

$$

PMZ153-154-081215-
Tinian Coastal Waters-Saipan Coastal Waters-
404 AM ChST Sat Feb 8 2025

.TODAY...East wind 10 to 15 kt. Seas 7 to 9 ft. Wave Detail:
Northeast 7 ft at 8 seconds, northwest 5 ft at 11 seconds and
east3 ft at 4 seconds. Scattered showers.
.TONIGHT...East wind 10 to 20 kt. Seas around 7 ft. Wave Detail:
Northeast 5 ft at 8 seconds, northwest 4 ft at 10 seconds and
northeast 3 ft at 5 seconds. Scattered showers.
.SUNDAY...Northeast wind 15 kt with gusts to 25 kt. Seas 6 to
7 ft. Wave Detail: Northeast 5 ft at 8 seconds, northwest 4 ft at
10 seconds and northeast 3 ft at 5 seconds. Scattered showers.
.SUNDAY NIGHT...Northeast wind 15 to 20 kt. Seas 6 to 8 ft. Wave
Detail: North 5 ft at 13 seconds, northeast 4 ft at 6 seconds and
northeast 3 ft at 9 seconds.
.MONDAY...Northeast wind 20 kt. Seas 8 to 10 ft. Wave Detail:
North 7 ft at 12 seconds, northeast 5 ft at 6 seconds and
northeast 4 ft at 10 seconds.
.TUESDAY...Northeast wind 20 kt. Seas 7 to 9 ft. Wave Detail:
Northeast 6 ft at 8 seconds, northeast 5 ft at 6 seconds and north
6 ft at 10 seconds.
.WEDNESDAY...Northeast wind 20 kt. Seas 9 to 11 ft. Wave Detail:
North 6 ft at 15 seconds, northeast 5 ft at 6 seconds and
northeast 7 ft at 8 seconds.

$$