056
FXZS60 NSTU 190113
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago  AS
213 PM SST Wed Jun 18 2025

.Short term...

Satellite imagery shows consistant rainfall from a trough that was
over the American Samoa islands yesterday has moved to the north.
However, cloudy skies remained over the territory with brief light
showers in some parts of the islands. As a ridge of high pressure
moves closer and strengthens tonight and Thursday, this will help
push the trough further northward. In the meantime,
east/southeasterly trades are forecast to increase to around 25
mph through Friday. An inversion is to develop over the islands on
Thursday and Friday. This tends to greatly reduce the risk of
rainfall over the territory and promotes clearing skies.
Therefore, the risk of rainfall reduces to isolated to scattered
(20 to 30% chance) for Thursday and Friday with breezy tradewinds
forecast to continue through this time.

.Long term...

By the weekend, the aforementioned ridge moves away from American
Samoa. This will allow a trough to move over the territory
throughout the weekend and increase the risk of showers to
numerous (60% chance). However, this rainfall is not projected to
be heavy enough to cause flash flooding. Winds are to decrease to
around 10 to 15 mph and become easterly during the weekend. Winds
may shift northeasterly by the beginning of the week.

Overall, no severe weather is expected for the next 7 days. Breezy
conditions are forecast through Friday night.

&&

.Marine...

The southeasterly breeze increase to a fresh breeze throughout the
morning and early afternoon hours and may reach a strong breeze at
times starting tonight through Friday evening. Long period
southerly swell is mixing in with the wind driven waves to create
rough seas today and seas are expected to continue building
through Saturday evening. Surf may reach the High Surf Warning
criteria for Friday. Expect the Small Craft Advisory to remain in
effect through at least the weekend.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...

A High Surf Advisory is in effect through Sunday.
A Small Craft Advisory remains in effect.

&&

$$

LaPlante