Area Forecast Discussion
Issued by NWS Pago Pago
Issued by NWS Pago Pago
121 FXZS60 NSTU 300058 AFDPPG Area Forecast Discussion National Weather Service Pago Pago AS 158 PM SST Sat Aug 29 2026 .Discussion... Latest satellite data depicts fair weather across the region as the ridge mentioned in yesterday`s discussion continues to dominate our area. However, as the Samoa Island chain remains along the back end of the ridge, we will continue to experience a slight drop in winds (from 15 to 25 mph seen yesterday to 10 to 20 mph seen today) through Sunday. Meanwhile, another high pressure system building near New Zealand is expected to strengthen as it moves east. The transition between the latter high pressure and current ridge will bring east winds of 10 to 20 mph and isolated to scattered showers through Sunday. As the latter high pressure system extends over the territory on Monday, expect winds to shift southeast. Converging east and southeast winds may lead to an uptick in showers Monday and Monday night. When the new high pressure system fully takes over on Tuesday, a breezy southeast wind pattern will persist through the end of the new week. && .Marine... Wave heights around 10 feet remain for coastal waters due to the prolonged trade wind event mentioned in the previous forecast discussion. Although seas are expected to gradually subside today as winds have fallen below 20 knots, observed waves are still well above advisory thresholds. Hence, the High Surf Advisory and Small Craft Advisory remain in effect. Model guidance depicts wave heights dropping to 6 feet by Sunday night. However, observed wave heights have been 1 to 2 feet above forecast values for the past few days. Therefore, we expect seas to remain elevated into the new week, especially as winds are expected to pick up again Monday. .PPG WATCHES/WARNINGS/ADVISORIES... High Surf Advisory Small Craft Advisory && $$