American Samoa's Tropical Cyclone Outlook 2025-26

Below Normal to Near Normal Tropical Cyclone (TC) Activity anticipated for American Samoa in the 2025-26 TC Season Read More >

354
FXZS60 NSTU 250117
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
217 PM SST Fri Apr 24 2026

.Short term...

A trough moved over American Samoa early this morning, but skies
began to decrease to a mix of sun and clouds from mid morning
through the early afternoon hours. Satellite imagery shows the
trough continuing to weaken, but remaining just to the north. The
risk of rain remains around 30 to 40 percent, while the Manu`a
islands is slightly higher as there is only a slight risk of the
trough moving back towards the islands. If showers fall, however,
rain is not expected to cause flash flooding.

For Saturday, a ridge of high pressure moves over the islands to
create more sun than clouds throughout the day. The trough is
likely to remain just to the north with the change of rain
lowering to 20 to 30 percent chance. The interaction between the
ridge and the trough is to create an easterly tradewind breeze,
which is expected to continue throughout the weekend. No severe
weather is forecast during this time.

.Long term...

For next week, another ridge of high pressure from the southwest
if forecast to move over the area. This will continue to generate
easterly trades up to 20 mph with possible passing tradewind
showers. A mix of sun and clouds are expected throughout the day.
Rainfall is expected to be below normal next week.

We have less than a week to go for hurricane season. There is no
risk of tropical development near American Samoa through next
week.

&&

.Marine...

After the trough moved to the north of the islands by mid-morning
this morning, easterly winds have decreased to a gentle to
moderate breeze. However, winds are forecast to increase overnight
that may reach up to 20 knots, which is within the Small Craft
Advisory criteria. Winds are to reach a fresh easterly breeze (16
to 21 knots) by Saturday and remain through the weekend. Seas,
mainly wind driven, will likely build to 6 to 8 feet during this
time.

For next week, easterly trades may decrease slightly but still at,
or at least close to, the Small Craft Advisory levels. Expect
choppy seas to continue with seas remaining up to 8 feet.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...

A Small Craft Advisory remains in effect.

&&

$$

LaPlante