


Coastal Waters Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
208 FZMY50 PGUM 162345 CCA CWFGUM Coastal Waters Forecast for the Mariana Islands...CORRECTED National Weather Service Tiyan GU 945 AM ChST Tue Jun 17 2025 Marianas Waters out to 40 nautical miles PMZ150-171000- 945 AM ChST Tue Jun 17 2025 Corrected Synopsis for TYPOs .Synopsis for Marianas Waters...Light to gentle winds will build to moderate by Wednesday night. Combined seas of 3 feet will also build to between 3 and 5 feet by Thursday. Scattered showers and isolated thunderstorms will continue to build in today as the lighter winds, daytime heating, nearby TUTT cell, and an incoming surface trough converge over the region. $$ PMZ151-152-171000- Guam Coastal Waters-Rota Coastal Waters- 945 AM ChST Tue Jun 17 2025 .TODAY...East wind 5 to 10 kt. Seas around 3 ft. Wave Detail: East 2 ft at 4 seconds and east 2 ft at 8 seconds. Scattered showers with isolated thunderstorms. .TONIGHT...East wind 5 to 10 kt. Seas around 3 ft. Wave Detail: East 2 ft at 4 seconds and east 2 ft at 8 seconds. Scattered showers with isolated thunderstorms. .WEDNESDAY...East wind 10 kt. Seas around 3 ft. Wave Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds. Isolated thunderstorms. .WEDNESDAY NIGHT...East wind 5 to 15 kt. Seas 3 to 4 ft. Wave Detail: East 3 ft at 4 seconds and east 3 ft at 8 seconds. A slight chance of thunderstorms. .THURSDAY THROUGH SATURDAY...East wind 5 to 15 kt. Seas 3 to 5 ft. Wave Detail: East 4 ft at 8 seconds and east 3 ft at 4 seconds. $$ PMZ153-154-171000- Tinian Coastal Waters-Saipan Coastal Waters- 945 AM ChST Tue Jun 17 2025 .TODAY...East wind 5 to 10 kt. Seas around 3 ft. Wave Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds. .TONIGHT...East wind 5 to 10 kt. Seas around 3 ft. Wave Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds. Scattered showers. .WEDNESDAY...East wind 5 to 10 kt. Seas around 3 ft. Wave Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds. .WEDNESDAY NIGHT...East wind 5 to 15 kt. Seas around 4 ft. Wave Detail: East 3 ft at 8 seconds and east 3 ft at 4 seconds. .THURSDAY THROUGH SATURDAY...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. $$