Coastal Waters Forecast
Issued by NWS Tiyan, Guam

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299
FZMY50 PGUM 090704
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
504 PM ChST Sun Nov 9 2025

Marianas Waters out to 40 nautical miles

PMZ150-092000-
504 PM ChST Sun Nov 9 2025

.Synopsis for Marianas Waters...
Gentle to moderate trades will prevail across the Marianas for
much of this week. Combined seas of 5 to 7 feet, comprised of a
easterly swell, northerly swell, and westerly swell from distant
Typhoon Fung-wong (32W), are expected to persist for several
days while varying in strength throughout the week.

$$

PMZ151>154-092000-
MARIANAS COASTAL WATERS-
504 PM ChST Sun Nov 9 2025

.TONIGHT...East wind 10 kt. Seas 5 to 7 ft. Wave Detail: East
5 ft at 10 seconds, west 3 ft at 9 seconds, north 3 ft at
11 seconds and east 2 ft at 4 seconds. Scattered showers.
.MONDAY...East wind 10 kt. Seas 5 to 7 ft. Wave Detail: North
4 ft at 10 seconds, west 4 ft at 11 seconds, east 3 ft at
11 seconds and east 2 ft at 4 seconds.
.MONDAY NIGHT...East wind 10 kt. Seas 5 to 7 ft. Wave Detail:
North 4 ft at 10 seconds, west 4 ft at 10 seconds, east 3 ft at
11 seconds and east 2 ft at 4 seconds.
.TUESDAY...East wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail:
North 4 ft at 10 seconds, east 3 ft at 11 seconds, west 3 ft at 11
seconds and east 3 ft at 4 seconds.
.TUESDAY NIGHT...East wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail:
North 5 ft at 10 seconds, east 3 ft at 11 seconds, east 3 ft at 4
seconds and west 2 ft at 11 seconds.
.WEDNESDAY THROUGH FRIDAY...East wind 10 to 15 kt. Seas 5 to 7 ft.
Wave Detail: East 5 ft at 9 seconds, east 3 ft at 4 seconds and
north 3 ft at 12 seconds.

$$