Coastal Waters Forecast
Issued by NWS Tiyan, Guam

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876
FZMY50 PGUM 210537
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
337 PM ChST Sat Sep 21 2024

Marianas Waters out to 40 nautical miles

PMZ150-212215-
337 PM ChST Sat Sep 21 2024

.Synopsis for Marianas Waters...Light to gentle trades and isolated
showers and thunderstorms continue for the region tonight. Seas of 3
feet are expected to increase slightly around Sunday then decrease
to 2 to 3 feet late week. Expect an increase in the chance of
showers and thunderstorms this coming week as a monsoon trough
develops over the region.

$$

PMZ151>154-212215-
MARIANAS COASTAL WATERS-
337 PM ChST Sat Sep 21 2024

.TONIGHT...East wind 10 kt. Wind waves 2 ft or less. East swell 3 ft.
Isolated thunderstorms.
.SUNDAY AND SUNDAY NIGHT...Northeast wind 5 to 10 kt. Wind waves 2
ft or less. East swell 3 to 4 ft.
.MONDAY AND MONDAY NIGHT...Northeast wind 5 to 10 kt. Wind waves 2
ft or less. East swell 3 to 4 ft. Scattered showers.
.TUESDAY...Northeast wind 5 to 10 kt. Wind waves 2 ft or less. East
swell 3 to 4 ft. Chance of showers.
.WEDNESDAY...Northeast wind 5 to 10 kt. Wind waves 2 ft or less.
Northeast swell 3 to 4 ft. Chance of showers and slight chance of
thunderstorms.
.THURSDAY...Northwest wind 5 to 10 kt. Wind waves 2 ft or less.
Northeast swell 3 to 4 ft. Chance of showers and slight chance of
thunderstorms.

$$