


Coastal Waters Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
775 FZMY50 PGUM 040600 CWFGUM Coastal Waters Forecast for the Mariana Islands National Weather Service Tiyan GU 400 PM ChST Fri Apr 4 2025 Marianas Waters out to 40 nautical miles PMZ150-042100- 400 PM ChST Fri Apr 4 2025 .Synopsis for Marianas Waters...Buoys and altimetry indicate combined seas of 5 to 7 feet continue across the waters. Seas are expected to begin to slowly subside by early next week, dropping to between 3 and 5 feet around midweek. Gentle to moderate trade winds are expected to continue through the forecast period. $$ PMZ151>154-042100- MARIANAS COASTAL WATERS- 400 PM ChST Fri Apr 4 2025 .TONIGHT...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: Northeast 6 ft at 10 seconds, northeast 3 ft at 13 seconds and east 3 ft at 4 seconds. .SATURDAY...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: Northeast 6 ft at 10 seconds, northeast 3 ft at 13 seconds and east 3 ft at 4 seconds. .SATURDAY NIGHT...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: Northeast 6 ft at 10 seconds and east 3 ft at 4 seconds. .SUNDAY...East wind 15 kt. Seas 5 to 7 ft. Wave Detail: Northeast 6 ft at 10 seconds and east 3 ft at 5 seconds. .SUNDAY NIGHT...East wind 15 kt. Seas 5 to 7 ft. Wave Detail: Northeast 6 ft at 9 seconds and east 3 ft at 5 seconds. .MONDAY...East wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: Northeast 5 ft at 8 seconds, east 3 ft at 4 seconds and north 2 ft at 9 seconds. .TUESDAY...East wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: East 5 ft at 8 seconds, east 2 ft at 4 seconds and north 3 ft at 8 seconds. .WEDNESDAY...East wind 10 kt. Seas 3 to 5 ft. Wave Detail: East 5 ft at 8 seconds and east 2 ft at 4 seconds. $$