990
FZMY50 PGUM 061806
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
406 AM ChST Sat Jun 7 2025

Marianas Waters out to 40 nautical miles

PMZ150-071000-
406 AM ChST Sat Jun 7 2025

.Synopsis for Marianas Waters...Gentle to moderate trades will
prevail throug tonight for Guam and Rota and through Sunday for
Tinian and Saipan, except near showers and thunderstorms were
fresh to strong gusts are possible. The trades are expected
diminish to light to gentle through at least the middle of next
week. Combined seas of 3 to 5 feet will drop about 1 foot by
tonight, then build back to between 3 and 5 feet at the beginning
of next week as a southwest to west monsoon swell moves into the
area.

$$

PMZ151-152-071000-
Guam Coastal Waters-Rota Coastal Waters-
406 AM ChST Sat Jun 7 2025

.TODAY...East wind 5 to 15 kt. Seas around 4 ft. Wave Detail:
East 4 ft at 8 seconds and east 3 ft at 4 seconds. Scattered
showers with isolated thunderstorms.
.TONIGHT...East wind 10 to 15 kt. Seas around 3 to 4 ft. Wave
Detail: East 3 ft at 4 seconds and east 3 ft at 8 seconds.
Scattered showers with isolated thunderstorms.
.SUNDAY...East wind 5 to 10 kt. Seas around 4 ft. Wave Detail:
East 4 ft at 8 seconds and east 2 ft at 4 seconds. Scattered
showers with isolated thunderstorms.
.SUNDAY NIGHT...East wind 5 to 10 kt. Seas 3 to 4 ft. Wave
Detail: East 4 ft at 8 seconds and east 2 ft at 4 seconds.
Isolated thunderstorms.
.MONDAY...Southeast wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail:
East 4 ft at 8 seconds and east 2 ft at 4 seconds.
.TUESDAY...Southeast wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail:
East 4 ft at 8 seconds, west 2 feet at 9 seconds and east 2 ft at
4 seconds.
.WEDNESDAY...Southeast wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail:
West 4 ft at 10 seconds, east 2 feet at 8 seconds and east 2 ft
at 4 seconds.

$$

PMZ153-154-071000-
Tinian Coastal Waters-Saipan Coastal Waters-
406 AM ChST Sat Jun 7 2025

.TODAY...East wind 5 to 15 kt. Seas 3 to 5 ft. Wave Detail: East
4 ft at 8 seconds and east 3 ft at 4 seconds. Scattered showers
with isolated thunderstorms.
.TONIGHT...East wind 10 to 15 kt. Seas 3 to 5 ft. Wave Detail:
East 4 ft at 8 seconds and east 3 ft at 4 seconds. Scattered
showers with isolated thunderstorms.
.SUNDAY...East wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail:
East 4 ft at 8 seconds and east 3 ft at 4 seconds. Scattered
showers with isolated thunderstorms.
.SUNDAY NIGHT...East wind 10 kt. Seas 4 to 5 ft. Wave Detail:
East 5 ft at 8 seconds and east 2 ft at 4 seconds. Isolated
thunderstorms.
.MONDAY...Southeast wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail:
East 4 ft at 8 seconds and east 2 ft at 4 seconds.
.TUESDAY...Southeast wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail:
East 4 ft at 8 seconds, west 2 feet at 9 seconds and east 2 ft at
4 seconds.
.WEDNESDAY...Southeast wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail:
West 4 ft at 10 seconds, east 2 feet at 8 seconds and east 2 ft
at 4 seconds.



$$