Coastal Waters Forecast
Issued by NWS Tiyan, Guam

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439
FZMY50 PGUM 221837
CWFGUM

Coastal Waters Forecast for the Mariana Islands
National Weather Service Tiyan GU
437 AM ChST Fri May 23 2025

Marianas Waters out to 40 nautical miles

PMZ150-231115-
437 AM ChST Fri May 23 2025

.Synopsis for Marianas Waters...Gentle trades continue across the
region. Combined seas of 3 to 5 feet will prevail through the
weekend. Combined seas may drop by a foot for the beginning of
next week.

$$

PMZ151>154-231115-
MARIANAS COASTAL WATERS-
437 AM ChST Fri May 23 2025

.TODAY...East wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail:
Northeast 4 ft at 9 seconds and east 2 ft at 4 seconds.
.TONIGHT...East wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail:
Northeast 4 ft at 9 seconds and east 2 ft at 4 seconds.
.SATURDAY...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.
.SATURDAY NIGHT...East 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.
.SUNDAY...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.
.MONDAY THROUGH TUESDAY...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. A
chance of showers.

$$