Coastal Waters Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
889 FZMY50 PGUM 051806 CWFGUM Coastal Waters Forecast for the Mariana Islands National Weather Service Tiyan GU 406 AM ChST Thu Feb 6 2025 Marianas Waters out to 40 nautical miles PMZ150-061000- 406 AM ChST Thu Feb 6 2025 .Synopsis for Marianas Waters...Altimetry and buoys are showing combined seas of 10 to 12 feet near 680 miles to the west of the Marianas. Seas are expected to build through Friday as a long- period north swell moves through the region, with seas may approach hazardous levels for small craft. An approaching shear line will start to move into the Marianas this weekend, increasing the potential for showers. Winds and seas may also start to build, but the exact extent and timing will depend on how far the shear line will push south. $$ PMZ151>154-061000- MARIANAS COASTAL WATERS- 406 AM ChST Thu Feb 6 2025 .TODAY...East wind 15 to 20 kt. Seas 6 to 8 ft. Wave Detail: East 6 ft at 9 seconds, north 4 ft at 11 seconds and east 3 ft at 5 seconds. .TONIGHT...Northeast wind 15 to 20 kt. Seas 8 to 9 ft. Wave Detail: North 6 ft at 10 seconds, east 5 ft at 9 seconds and northeast 4 ft at 6 seconds. Scattered showers. .FRIDAY...East wind 15 to 20 kt. Seas 7 to 9 ft. Wave Detail: North 6 ft at 11 seconds, east 5 ft at 9 seconds and east 3 ft at 5 seconds. .FRIDAY NIGHT...East wind 15 kt. Seas around 8 ft. Wave Detail: North 6 ft at 11 seconds, northeast 5 ft at 10 seconds and east 3 ft at 5 seconds. .SATURDAY THROUGH SUNDAY...Northeast wind 15 kt. Seas 6 to 8 ft. Wave Detail: Northeast 5 ft at 9 seconds, north 5 ft at 11 seconds and east 3 ft at 5 seconds. A chance of showers. .MONDAY...Northeast wind 15 to 20 kt. Seas 7 to 9 ft. Wave Detail: Northeast 7 ft at 11 seconds and northeast 4 ft at 6 seconds. A chance of showers. $$