Coastal Waters Forecast
Issued by NWS Tiyan, Guam

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764
FZMY50 PGUM 041811
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
411 AM ChST Sat Jul 5 2025

Marianas Waters out to 40 nautical miles

PMZ150-051000-
411 AM ChST Sat Jul 5 2025

.Synopsis for Marianas Waters...Mainly gentle southeasterlies
will prevail through today, then becoming light from the south
and southwest for the rest of the weekend. Winds will begin to
pick up next week as high pressure ridge shifts east and the
southerly monsoon flow increases, with winds becoming gentle to
moderate by midweek. Combined seas of 3 to 4 feet are expected
through midweek, possibly increasing late next week due to a west
to northwest swell emanating from a distant tropical cyclone
north of the Philippines.

$$

PMZ151>154-051000-
MARIANAS COASTAL WATERS-
411 AM ChST Sat Jul 5 2025

.TODAY...Southeast wind 5 kt. Seas 3 to 4 ft. Wave Detail: East
4 ft at 9 seconds. Isolated thunderstorms.
.TONIGHT...South wind 5 kt. Seas 3 to 4 ft. Wave Detail: East
4 ft at 9 seconds. Isolated thunderstorms.
.SUNDAY...Southwest wind 5 kt. Seas 3 to 4 ft. Wave Detail: East
3 ft at 9 seconds. Scattered showers with isolated thunderstorms.
.SUNDAY NIGHT...Southwest wind 5 kt. Seas around 3 ft. Wave
Detail: East 3 ft at 9 seconds. Scattered showers with isolated
thunderstorms.
.MONDAY THROUGH WEDNESDAY...South wind 5 to 10 kt. Seas around
3 ft. Wave Detail: East 3 ft at 8 seconds and south 2 ft at
4 seconds. Scattered showers with a slight chance of
thunderstorms.

$$