Area Forecast Discussion
Issued by NWS Pago Pago
Issued by NWS Pago Pago
686 FXZS60 NSTU 200119 AFDPPG Area Forecast Discussion National Weather Service Pago Pago AS 219 PM SST Tue Aug 19 2025 .Short term... A high pressure system holds fair weather for the territory. This feature is also producing breezy east winds that is expected to remain through Thursday. Latest satellite data shows fair weather cumulus clouds that confirms the presence of the high pressure. Expect partly cloudy skies and isolated showers as well as trade winds will remain through Wednesday as the high pressure dominates in the area. .Long term... By Thursday, moisture from a trough northwest will gradually make its way to the Islands. Expect showers to become scattered during the day, then increase to widespread overnight when the trough is centered over the Islands. Most model data comes in agreement for this uptick in showers, while GFS downplays it. Because we are a few days out, there is some uncertainty and a possibility models will line up later on. However, we expect the trough to remain in the area through the weekend. && .Marine... Latest wave heights at the Aunu`u PacIOOS buoy are around 6 to 8 feet. Rough ocean conditions persists for the territory due to trade winds. Expect seas to remain choppy as trade winds continue through the new week. Additionally, model data suggests seas building Thursday, which is typical with long lasting trades. .PPG WATCHES/WARNINGS/ADVISORIES... Small Craft Advisory && $$ TM