


Coastal Waters Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
612 FZMY50 PGUM 031812 CWFGUM Coastal Waters Forecast for the Mariana Islands National Weather Service Tiyan GU 412 AM ChST Fri Apr 4 2025 Marianas Waters out to 40 nautical miles PMZ150-041000- 412 AM ChST Fri Apr 4 2025 .Synopsis for Marianas Waters...Nearby buoys and altimetry indicate combined seas of 5 to 7 feet. A pulse of long-period northeast swell is beginning to move through the region and may bump seas up by a foot or so through the end of the week. Gentle to moderate trade winds are expected to continue through the forecast period. $$ PMZ151>154-041000- MARIANAS COASTAL WATERS- 412 AM ChST Fri Apr 4 2025 .TODAY...East wind 10 to 15 kt. Seas 6 to 8 ft. Wave Detail: Northeast 6 ft at 10 seconds, northeast 4 ft at 14 seconds and east 3 ft at 4 seconds. .TONIGHT...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: Northeast 6 ft at 10 seconds, northeast 3 ft at 13 seconds and east 3 ft at 4 seconds. .SATURDAY...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: Northeast 6 ft at 10 seconds, east 3 ft at 4 seconds and northeast 3 ft at 13 seconds. .SATURDAY NIGHT...East wind 15 kt. Seas 5 to 7 ft. Wave Detail: Northeast 6 ft at 10 seconds and east 3 ft at 5 seconds. .SUNDAY...East wind 15 kt. Seas 5 to 7 ft. Wave Detail: Northeast 6 ft at 10 seconds and east 3 ft at 5 seconds. .MONDAY THROUGH TUESDAY...East wind 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: Northeast 5 ft at 8 seconds, east 3 ft at 4 seconds and north 2 ft at 9 seconds. $$