Area Forecast Discussion
Issued by NWS Pago Pago
Issued by NWS Pago Pago
422 FXZS60 NSTU 190008 AFDPPG Area Forecast Discussion National Weather Service Pago Pago AS 108 PM SST Fri Jul 18 2025 .Short term... TONIGHT THROUGH SUNDAY NIGHT...A ridge extending from a high pressure to the far southeast is slowly moving eastward. A series of shortwave troughs will continue to bring brief numerous showers across the islands through Sunday. Winds will remain at gentle east flow through the rest of the weekend. .Long term... MONDAY THROUGH FRIDAY...A shortwave trough from the northeast will pass across the islands on Monday night, increasing showers to numerous. An active trough is expected to move across the islands on Wednesday night, bringing possible widespread showers through the rest fo the new week. With the ridge to the southeast of the islands, winds will shift northeast on Monday night before diminishing to light flow on Tuesday. These wind conditions will persist through Thursday night before slightly becoming gentle east flow on Friday. && .Marine... Seas of 5 to 7 feet will persist through Sunday. Southwest swells are expected to slightly elevate seas 6 to 8 feet on Sunday night through Monday night as swells subside. No other significant swells will impact the territory and coastal waters in the new week. && .PPG WATCHES/WARNINGS/ADVISORIES... None && $$