Coastal Waters Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
299 FZMY50 PGUM 090704 CWFGUM Coastal Waters Forecast for the Mariana Islands National Weather Service Tiyan GU 504 PM ChST Sun Nov 9 2025 Marianas Waters out to 40 nautical miles PMZ150-092000- 504 PM ChST Sun Nov 9 2025 .Synopsis for Marianas Waters... Gentle to moderate trades will prevail across the Marianas for much of this week. Combined seas of 5 to 7 feet, comprised of a easterly swell, northerly swell, and westerly swell from distant Typhoon Fung-wong (32W), are expected to persist for several days while varying in strength throughout the week. $$ PMZ151>154-092000- MARIANAS COASTAL WATERS- 504 PM ChST Sun Nov 9 2025 .TONIGHT...East wind 10 kt. Seas 5 to 7 ft. Wave Detail: East 5 ft at 10 seconds, west 3 ft at 9 seconds, north 3 ft at 11 seconds and east 2 ft at 4 seconds. Scattered showers. .MONDAY...East wind 10 kt. Seas 5 to 7 ft. Wave Detail: North 4 ft at 10 seconds, west 4 ft at 11 seconds, east 3 ft at 11 seconds and east 2 ft at 4 seconds. .MONDAY NIGHT...East wind 10 kt. Seas 5 to 7 ft. Wave Detail: North 4 ft at 10 seconds, west 4 ft at 10 seconds, east 3 ft at 11 seconds and east 2 ft at 4 seconds. .TUESDAY...East wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail: North 4 ft at 10 seconds, east 3 ft at 11 seconds, west 3 ft at 11 seconds and east 3 ft at 4 seconds. .TUESDAY NIGHT...East wind 10 to 15 kt. Seas 6 to 7 ft. Wave Detail: North 5 ft at 10 seconds, east 3 ft at 11 seconds, east 3 ft at 4 seconds and west 2 ft at 11 seconds. .WEDNESDAY THROUGH FRIDAY...East wind 10 to 15 kt. Seas 5 to 7 ft. Wave Detail: East 5 ft at 9 seconds, east 3 ft at 4 seconds and north 3 ft at 12 seconds. $$