


Coastal Waters Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
148 FZMY50 PGUM 181735 CWFGUM Coastal Waters Forecast for the Mariana Islands National Weather Service Tiyan GU 335 AM ChST Sat Apr 19 2025 Marianas Waters out to 40 nautical miles PMZ150-190915- 335 AM ChST Sat Apr 19 2025 .Synopsis for Marianas Waters...Combined seas of 5 to 7 feet gradually diminish this weekend as trade winds and swell subside, falling to between 3 and 5 feet next week. Gentle to moderate trades will become mostly gentle early next week. $$ PMZ151>154-190915- MARIANAS COASTAL WATERS- 335 AM ChST Sat Apr 19 2025 .TODAY...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: East 6 ft at 8 seconds, east 3 ft at 5 seconds and northeast 2 ft at 10 seconds. .TONIGHT...East wind 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: East 5 ft at 8 seconds, east 3 ft at 4 seconds and northeast 2 ft at 10 seconds. .SUNDAY...East wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: East 5 ft at 8 seconds, east 3 ft at 4 seconds and northeast 2 ft at 9 seconds. .SUNDAY NIGHT AND MONDAY...East wind 10 kt. Seas 3 to 5 ft. Wave Detail: East 4 ft at 8 seconds, east 2 ft at 4 seconds and northeast 2 ft at 10 seconds. .TUESDAY AND WEDNESDAY...East wind 5 to 10 kt. Seas 3 to 5 ft. Wave Detail: East 4 ft at 8 seconds, east 2 ft at 4 seconds and north 2 ft at 8 seconds. $$