418
FZMY50 PGUM 211823
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
423 AM ChST Sat Feb 22 2025

Marianas Waters out to 40 nautical miles

PMZ150-221000-
423 AM ChST Sat Feb 22 2025

.Synopsis for Marianas Waters...Winds and seas are expected to
remain hazardous to small craft through the weekend and likely
into next week. Fresh winds with up to near-gale gusts will be
evident due to a strong subtropical ridge to the north and
multiple shear lines passing through the Marianas. Combined seas
will be 8 to 10 ft as a larger northerly swell, trade swell and
wind waves impact the region. Winds and seas are expected to
increase further early next week.

$$

PMZ151-152-221000-
Guam Coastal Waters-Rota Coastal Waters-
423 AM ChST Sat Feb 22 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.TODAY...Northeast wind 20 kt with gusts to 30 kt. Seas around
9 ft. Wave Detail: North 6 ft at 11 seconds and northeast 5 ft at
8 seconds. Scattered showers with isolated thunderstorms.
.TONIGHT...Northeast wind 20 kt with gusts to 30 kt. Seas around
9 ft. Wave Detail: Northeast 6 ft at 8 seconds and north 5 ft at
12 seconds. Scattered showers with isolated thunderstorms.
.SUNDAY...Northeast wind 20 kt. Seas 8 to 9 ft. Wave Detail:
Northeast 7 ft at 7 seconds and north 4 ft at 12 seconds.
Scattered showers with isolated thunderstorms.
.SUNDAY NIGHT...Northeast wind 20 kt with gusts to 30 kt. Seas
8 to 10 ft. Wave Detail: Northeast 7 ft at 8 seconds and north
4 ft at 12 seconds. Scattered showers with isolated
thunderstorms.
.MONDAY THROUGH WEDNESDAY...Northeast wind 20 to 25 kt. Seas 9 to
11 ft. Wave Detail: Northeast 7 ft at 8 seconds and north 5 ft at
11 seconds.

$$

PMZ153-154-221000-
Tinian Coastal Waters-Saipan Coastal Waters-
423 AM ChST Sat Feb 22 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH EARLY MONDAY MORNING...

.TODAY...Northeast wind 20 kt. Seas around 9 ft. Wave Detail:
North 6 ft at 11 seconds, northeast 5 ft at 7 seconds and east
4 ft at 10 seconds.
.TONIGHT...Northeast wind 20 kt with gusts to 30 kt. Seas 8 to
10 ft. Wave Detail: Northeast 5 ft at 7 seconds, east 5 ft at
10 seconds and north 5 ft at 12 seconds. Scattered showers.
.SUNDAY...Northeast wind 20 kt with frequent gusts around 25 kt.
Seas 7 to 9 ft. Wave Detail: East 6 ft at 8 seconds, north 4 ft
at 12 seconds and 5 ft at 5 seconds.
.SUNDAY NIGHT...Northeast wind 20 kt with gusts to 30 kt. Seas
8 to 10 ft. Wave Detail: East 7 ft at 8 seconds, north 4 ft at 12
seconds and northeast 6 ft at 5 seconds.
.MONDAY...Northeast wind 20 kt with frequent gusts around 25 kt.
Seas 7 to 9 ft. Wave Detail: Northeast 7 ft at 7 seconds, north 3
ft at 12 seconds and northeast 5 ft at 5 seconds.
.TUESDAY THROUGH WEDNESDAY...Northeast wind 20 to 25 kt. Seas 9 to
11 ft. Wave Detail: Northeast 7 ft at 8 seconds, north 5 ft at 11
seconds and northeast 6 ft at 5 seconds.

$$