Area Forecast Discussion
Issued by NWS Pago Pago
Issued by NWS Pago Pago
632 FXZS60 NSTU 300052 AFDPPG Area Forecast Discussion National Weather Service Pago Pago AS 152 PM SST Mon Sep 29 2025 .Discussion... A high pressure system centered just south of the Islands continues to limit shower activity for the area. The upper air sounding from this afternoon reflects a dry and stable profile. However, a weak convergence (also a trough) is expected to develop at the boundary of the high pressure. This feature will likely produce showers embedded within the trade wind flow Tuesday night through Wednesday. As the high pressure continues to move east by Thursday, expect winds to shift east and the trough to move over the Islands. An uptick in showers is possible Thursday night into Friday morning, before diminishing Saturday. The trough will weaken in the area by Saturday night, leaving a gentle to moderate east breeze to last through the new week. && .Marine... Latest wave heights from the Aunu`u PacIOOS buoy are around 5 to 7 feet. Winds and seas will remain fairly calm through Tuesday, before building Tuesday night. Expect choppy ocean conditions for this time up until the weekend as tradewinds linger in the area. .PPG WATCHES/WARNINGS/ADVISORIES... None && $$ TM