Area Forecast Discussion
Issued by NWS Pago Pago
Issued by NWS Pago Pago
628 FXZS60 NSTU 030033 AFDPPG Area Forecast Discussion National Weather Service Pago Pago AS 133 PM SST Wed Apr 2 2025 .Short term... Latest satellite data shows thunderstorms over the American Samoa region, tracking south. Expect the chance for showers to diminish throughout the day. However, unstable weather observed via upper air sounding could still lead to further thunderstorms. For this reason, thunderstorms will remain in the forecast for tonight. By Thursday, instability will gradually diminish, reducing the potential for thunderstorm development. However, as the thunderstorms weaken, a trough to the south will move toward the territory. Expect an uptick in showers Thursday night through Friday as the trough moves directly over the Islands. The potential for flooding remains minimal, as models suggests active weather will stay at the surface, limiting deep convection. .Long term... The aforementioned trough will dissipate by Saturday. Expect light and variable winds as well as scattered showers to persist through Sunday. By Monday, east winds will build to 10 to 20 mph, signaling the start of trade wind season. These winds, along with showers embedded within the trade wind flow, will continue through the end of the forecast period. && .Marine... Calm seas continue for coastal waters due to light and variable winds, with smooth sailing conditions reflected in current PacIOOS buoys readings, showing wave heights of 4 to 6 feet. However, seas are forecast to gradually increase tonight through Friday as a south swell moves in the area. While the swells pass through, waves are not expected to exceed 6 feet. The main impacts from these swells will be strong rip currents and hazardous surfs. Open waters are expected to remain calm through the weekend. By Monday, as the winds build from the east, rough ocean conditions are expected to persist. && .PPG WATCHES/WARNINGS/ADVISORIES... NONE && $$ TM