


Coastal Waters Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
469 FZMY50 PGUM 031830 CWFGUM Coastal Waters Forecast for the Mariana Islands National Weather Service Tiyan GU 430 AM ChST Wed Jun 4 2025 Marianas Waters out to 40 nautical miles PMZ150-041000- 430 AM ChST Wed Jun 4 2025 .Synopsis for Marianas Waters...Gentle to moderate trades will prevail for much of this week. Combined seas of 4 to 5 feet will persist the next few days, dropping a foot during the weekend. $$ PMZ151>154-041000- MARIANAS COASTAL WATERS- 430 AM ChST Wed Jun 4 2025 .TODAY...East wind 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: East 4 ft at 8 seconds and east 3 ft at 4 seconds. Scattered showers with isolated thunderstorms. Locally heavy showers possible. .TONIGHT...Southeast wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: East 4 ft at 8 seconds and southeast 2 ft at 4 seconds. Scattered showers with isolated thunderstorms. .THURSDAY...Southeast wind 10 kt. Seas 3 to 5 ft. Wave Detail: East 4 ft at 8 seconds and southeast 2 ft at 4 seconds. Scattered showers. .THURSDAY NIGHT...Southeast wind 10 kt. Seas 3 to 5 ft. Wave Detail: East 4 ft at 8 seconds and southeast 2 ft at 4 seconds. Scattered showers with isolated thunderstorms. .FRIDAY THROUGH SATURDAY...East wind 10 kt. Seas 3 to 4 ft. Wave Detail: East 4 ft at 8 seconds and southeast 2 ft at 4 seconds. A chance of showers with a slight chance of thunderstorms. .SUNDAY...East wind 10 kt. Seas 3 to 4 ft. Wave Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds. A chance of showers. $$