Area Forecast Discussion
Issued by NWS Pago Pago
Issued by NWS Pago Pago
014 FXZS60 NSTU 010053 AFDPPG Area Forecast Discussion National Weather Service Pago Pago AS 153 PM SST Sun Nov 30 2025 .Short term... Showers and thunderstorms continued over American Samoa today as the slow moving trough remains over the territory. Cloudy skies and widespread showers are once again forecast for tonight with the possibility of more thunderstorms. With the amount of rainfall this past week and the additional rain that may occur through late tonight, a Flood Watch remains in effect through tonight. As a low pressure system develops to the east of American Samoa overnight and Monday, this is forecast to absorb the moisture currrently over the territory. Numerous showers (60% chance) forecast for Monday morning is to reduce to scattered showers (40% chance) in the afternoon. By the evening, the trough is anticipated to weaken as it moves away from American Samoa. Overall, the weather pattern developing for next week will provide a much drier forecast compared to this past week. For the beginning to mid- week, a weak high pressure system is to move over American Samoa. If showers develop, it would be in the passing form. Flash flooding from this rainfall is not likely. With temperatures above normal with weak winds, it will feel more humid than usual. .Long term... For late in the week and into next weekend, drier than normal air is forecast to move in from the south as the aforementioned low remains off to the east. Not much change is anticipated in the weather pattern compared to the beginning to middle of the upcoming week. Winds remain weak, but the risk of showers decreases slightly to isolated to scattered showers (20 to 30% chance). && .Marine... A trough over the American Samoa coastal waters has been responsible for scattered thunderstorms across the region this weekend. However, this slow moving trough is anticipated to move away from the region by tomorrow morning. Winds are forecast to remain weak throughout the upcoming week. Even though a weak northerly swell is to continue throughout the majority of the week, seas are anticipated to be below Small Craft Advisory levels for the next 5 days. && .PPG WATCHES/WARNINGS/ADVISORIES... A Flood Watch remains in effect through Sunday night. && $$ LaPlante