Coastal Waters Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
482 FZMY50 PGUM 152017 CWFGUM Coastal Waters Forecast for the Mariana Islands National Weather Service Tiyan GU 617 AM ChST Mon Sep 16 2024 Marianas Waters out to 40 nautical miles PMZ150-160830- 617 AM ChST Mon Sep 16 2024 .Synopsis for Marianas Waters...Near gale monsoon flow will continue through tonight, as a monsoon surge, induced by a nearby monsoon disturbance, makes its way across the region. Combined seas of 5 to 7 feet are expected to quickly rise today, peaking at 12 to 15 feet this afternoon and evening. Sea conditions are expected to be hazardous to small craft tonight through at least Tuesday morning. $$ PMZ151>154-160830- MARIANAS COASTAL WATERS- 617 AM ChST Mon Sep 16 2024 ...GALE WATCH IN EFFECT THROUGH LATE TONIGHT... .TODAY...South wind 30 kt with gusts to 40 kt. Wind waves 4 to 7 ft. Southwest swell 8 to 10 ft and east 3 ft. Frequent heavy showers and scattered thunderstorms. .TONIGHT...South wind 30 kt with gusts to 40 kt. Wind waves 5 to 8 ft. Southwest swell 9 to 11 ft and east 3 ft. Frequent heavy showers and scattered thunderstorms. .TUESDAY...Southeast wind 10 to 20 kt. Wind waves 2 to 4 ft. Southwest swell 6 to 8 ft and east 3 ft. Frequent heavy showers and isolated thunderstorms. .TUESDAY NIGHT...Southeast wind 5 to 15 kt. Wind waves 1 to 3 ft. Mixed swell southwest 5 to 6 ft and east 3 ft. Scattered showers and isolated thunderstorms. .WEDNESDAY AND THURSDAY...East wind 5 to 15 kt. Wind waves 1 to 3 ft. Southwest swell 3 to 4 ft and east 3 ft. Chance of showers and slight chance of thunderstorms. .FRIDAY...Southeast wind 10 to 15 kt. Wind waves 2 to 3 ft. Mixed swell east 3 ft and west 3 ft. Chance of showers and slight chance of thunderstorms. $$