textproduct: WSO Pago Pago

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

Long term [Tuesday through Saturday]

The aforementioned high pressure will move out of the area to the east. However, development of a new high pressure system east of New Zealand will maintain trade winds across the region. The new high pressure system will be centered further to the south however, weakening the net strength of the ridging for the Tropical Southwest Pacific. Therefore, while trade winds will persist, they are forecast to gradually decrease in strength through the new week. The ridging should however, remain enough to keep troughing north and west of the American Samoa islands, holding near-to-below average rainfall for the territory.

Marine

Seas have slightly subsided from their peak Friday and Friday night, but remain very large, still observed in the 12 to 15 foot range at Aunu'u buoy. The strong southeasterly trade winds should continue to hold very large seas and surf through at least late Sunday. Inexperienced mariners operating small vessels are advised to remain in port through the weekend as marine navigation is extremely difficult and potentially dangerous given the current conditions. Warning level surf is also capable of sweeping away people who get too close to the water in surf vulnerable locations along south and southeast facing shorelines, dangerous rip currents may also pose an enhanced threat even in areas where conditions initially appear calm. Coastal flooding from high surf may wash debris onto roadways.

Trade winds will begin to gradually weaken to start the new week. Surf may subside from Warning level down into Advisory levels, but will still pose a hazard for beachgoers. While slow improvement is expected regarding marine and surf conditions, they should remain rough through at least midweek.

PPG WATCHES/WARNINGS/ADVISORIES

High Surf Warning remains in effect. Wind Advisory remains in effect. Small Craft Advisory remains in effect.


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