Public Info Statement - Prepare for Hurricane Season NOW

Public Info Statement - Prepare for Hurricane Season NOW Read More >

090
FXZS60 NSTU 200054
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
154 PM SST Mon Oct 19 2026

.Short term...

Satellite imagery shows more sun than expected over the Tutuila,
Aunu`u, Manu`a islands this morning and early afternoon. A strong ridge
of high pressure from the southwest is stronger than anticipated
and brought drier air over the low to middle levels of the
atmosphere to suppress passing showers over the area.

The aforementioned ridge is forecast to remain over Tutuila,
Aunu`u, Manu`a throughout the week. Winds are to increase to
around 15 to 20 mph overnight tonight and last through at least
mid-week. The wind direction is to shift slightly from
south/southeast to southeast. If any showers occur, it will likely
be in the passing form. Flash flooding is not anticipated through
mid-week and temperatures are to remain near normal.

For Swains Island, a trough is currently just to the north of the
island. Showers are forecast to be numerous (60 to 70%) for that
region, while the rest of the islands are forecast to be scattered
(30 to 50%).

.Long term...

The center of the high pressure system is forecast to move closer
to the islands later this week and this weekend. This is forecast
it to increase winds up to 25 mph. Showers remain in the passing
form. No severe weather is anticipated.

There is no risk of tropical development along the American Samoa
islands for the next 7 days.

&&

.Marine...

Rough seas persist as a moderate to fresh south/southeasterly
breeze remains over the American Samoa coastal waters. Winds are
to increase to a fresh southeasterly breeze overnight and will
likely remain around that strength for the rest of the week. A
weak southerly swell is also forecast to move through the waters
tonight through the middle of the week. Seas are forecast to
remain around 8 to 10 feet and the High Surf Advisory is likely to
be in effect through at least Friday.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...

A High Surf Advisory remains in effect.
A Small Craft Advisory remains in effect.

&&

$$

LaPlante