Coastal Waters Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
375 FZMY50 PGUM 231901 CWFGUM Coastal Waters Forecast for the Mariana Islands National Weather Service Tiyan GU Issued by National Weather Service Honolulu HI 501 AM ChST Tue Jun 24 2025 Marianas Waters out to 40 nautical miles PMZ150-240900- 501 AM ChST Tue Jun 24 2025 .Synopsis for Marianas Waters...Gentle to moderate east to southeast winds will continue through Wednesday. Winds could increase toward the end of the week as a disturbance develops near the area. Increasing showers and thunderstorms are expected into the weekend. Combined seas of 3 to 5 feet will continue through much of the week, building to between 5 and 7 feet by the weekend. $$ PMZ151>154-240900- MARIANAS COASTAL WATERS- 501 AM ChST Tue Jun 24 2025 .TODAY...East wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds. Isolated thunderstorms. .TUESDAY NIGHT...East wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds. Scattered showers with isolated thunderstorms. .WEDNESDAY...East wind 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds. Scattered showers with isolated thunderstorms. .WEDNESDAY NIGHT...Southeast wind 5 to 15 kt. Seas 3 to 5 ft. Wave Detail: East 4 ft at 8 seconds and southeast 3 ft at 4 seconds. Scattered showers with isolated thunderstorms. .THURSDAY...Southeast wind 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: East 4 ft at 8 seconds and southeast 3 ft at 4 seconds. Showers likely with a slight chance of thunderstorms. .FRIDAY THROUGH SATURDAY...Southwest wind 10 to 20 kt. Gusts to 35 kt with heavier showers and thunderstorms. Seas 5 to 7 ft. Wave Detail: East 6 ft at 8 seconds and southwest 4 ft at 6 seconds. Showers likely with a slight chance of thunderstorms. $$