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Coastal Waters Forecast
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
052 FZMY50 PGUM 170305 AAA CWFGUM Coastal Waters Forecast for the Mariana Islands...UPDATED National Weather Service Tiyan GU 105 PM ChST Wed Jul 17 2024 Marianas Waters out to 40 nautical miles PMZ150-170800- 105 PM ChST Wed Jul 17 2024 .Synopsis for Marianas Waters...Fresh winds and gusts of 25 to 30 kt are expected as showers and isolated thunderstorms arrive from the east. Combined sea of 5 to 8 feet will be choppy at times with an arriving westerly swell. A trough approaching from the southeast will cause showers and isolated thunderstorms tonight through Friday. $$ PMZ151>154-170800- MARIANAS COASTAL WATERS- 105 PM ChST Wed Jul 17 2024 ...CHOPPY SEAS DEVELOPING AS WESTERLY SWELL GRADUALLY ARRIVES... .THIS AFTERNOON...East wind 15 to 20 kt with gusts to 30 kt near showers. Wind waves 3 to 5 ft. East swell 4 to 6 ft. Scattered showers and isolated thunderstorms. .TONIGHT...East wind 10 to 20 kt with gusts to 30 kt near showers. Wind waves 3 to 5 ft. East swell 4 to 6 ft. Numerous heavy showers and isolated thunderstorms. .THURSDAY THROUGH FRIDAY NIGHT...Southeast wind 10 to 20 kt with gusts to 30 kt near showers. Wind waves 3 to 5 ft. Mixed swell east 4 to 5 ft and southwest 3 to 4 ft. Numerous showers and isolated thunderstorms. .SATURDAY AND SUNDAY...Southeast wind 10 to 15 kt. Wind waves 2 to 3 ft. Mixed swell east 3 to 5 ft and west 3 to 4 ft. Chance of showers and slight chance of thunderstorms. $$ Simpson