Area Forecast Discussion
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
124 FXPQ50 PGUM 292012 AFDGUM Area Forecast Discussion National Weather Service Tiyan GU 612 AM ChST Thu May 30 2024 .Marianas Synopsis... Partly cloudy skies are seen across the Marianas with a trade wind trough producing spotty showers east of the waters. && .Discussion... Maintained the previous forecast of scattered showers for Guam, today and tonight. Satellite indicated spotty showers east of the Marianas around 18Z. Possible we may few more showers for the CNMI as the trade-wind trough passes through, but kept showers isolated for today. Scattered showers look more likely for Guam as the more convective weather is seen to the south. Also the TUTT producing some activity near Yap with higher moisture to the south. && .Marine... Gentle to moderate trade winds are expected to continue for the next day or so, then light to gentle and then becoming southeast around the weekend. Altimetry observed seas between 3 to 5 feet just west of the coastal waters. Made one small change, decreased the secondary northwest swell as Tropical Storm Ewiniar is weakening and moving off quickly, and expecting another foot decrease tomorrow. && .Eastern Micronesia including Chuuk... ASCAT winds show gentle to moderate trade winds over the region, along with some areas of weak surface convergence. The weak surface convergence that brought showers and storms to Majuro has moved westward towards Kosrae and Pohnpei today. Scattered showers and isolated thunderstorms will be possible today and tomorrow in Kosrae and Pohnpei. The surface trough will continue to move westward towards Chuuk by Friday into Saturday. Scattered showers and isolated thunderstorms will be possible for Chuuk as well. Combined seas of 4 to 6 ft should prevail across the region, except seas of 5 to 7 ft could build across the northern RMI this weekend. Kalo Buoy shows combined seas mainly 3 to 5 feet with occasional bigger waves on the east side of Majuro. && .Western Micronesia for Yap and Palau... Yap and Koror Palau; A weak surface trough is approaching Yap and Palau this morning with a Tropical Upper Level Tropospheric Trough (TUTT) extended towards Yap. Scattered showers will be possible across Yap and Palau today with isolated thunderstorms possible in Yap. Models continue to show a drier trend across Yap and Palau beginning this weekend into next week after the current surface trough moves through. Gentle to moderate trades and benign seas conditions are expected to continue across the region through the weekend. Palau/Ngaraard Buoy shows combined seas mainly between 2 to 3 feet. && .GUM WATCHES/WARNINGS/ADVISORIES... GU...None. MP...None. Marianas Waters...None. && $$ Marianas: Hong Micronesia: Williams