


Coastal Waters Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
015 FZMY50 PGUM 141704 CWFGUM Coastal Waters Forecast for the Mariana Islands National Weather Service Tiyan GU 304 AM ChST Sun Jun 15 2025 Marianas Waters out to 40 nautical miles PMZ150-151000- 304 AM ChST Sun Jun 15 2025 .Synopsis for Marianas Waters...Light to gentle winds will prevail through the coming week. Combined seas of 3 to 4 feet will subside a bit, to between 2 and 3 feet Monday, then begin to build Tuesday, reaching 3 to 5 feet Wednesday. $$ PMZ151>154-151000- MARIANAS COASTAL WATERS- 304 AM ChST Sun Jun 15 2025 .TODAY...East wind 10 kt. Seas 3 to 4 ft. Wave Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds. .TONIGHT...East wind 10 kt. Seas 3 to 4 ft. Wave Detail: East 3 ft at 8 seconds and east 2 ft at 4 seconds. .MONDAY AND MONDAY NIGHT...East wind 10 kt. Seas 2 to 3 ft. Wave Detail: East 2 ft at 8 seconds and east 2 ft at 4 seconds. .TUESDAY AND WEDNESDAY...East wind 5 to 10 kt. Seas 2 to 4 ft. Wave Detail: East 4 ft at 8 seconds and east 2 ft at 4 seconds. .THURSDAY...East wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: East 5 ft at 8 seconds and east 2 ft at 4 seconds. $$