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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 >


466
FXZS60 NSTU 250127
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
227 PM SST Mon Nov 24 2025

.Short term...

Satellite imagery shows a mix of sun and clouds over American
Samoa this morning and early afternoon. Winds have become
northeasterly throughout the day as a strong trough remains near
the Fiji region. WSO Pago Pago recorded northeasterly winds
reaching up to 15 mph at times. However, winds are projected to
decrease during the overnight hours and to become a light easterly
breeze through Wednesday night. There is high confidence that
rainfall is to be below normal through Tuesday night with isolated
showers (20% chance). If showers occur, it would be in the passing
form. The risk of showers increases to scattered showers (50%
chance) by Wednesday.

We will be monitoring the aforementioned trough currently over the
Fiji region throughout the week. This strong trough is forecast to
slowly move eastward and to reach American Samoa by Thursday.
Rainfall may be persistent and heavy at times from late Thursday
through late Friday. The chance of rainfall on Thursday is
numerous showers (70% chance), but becoming widespread from
Thursday night through Friday night. Pending on the exact track
and strength of the trough, these showers may continue through
Saturday.

.Long term...

From late Saturday through early next week, the trough is forecast
to be to the east of American Samoa. Light winds are expected with
below average to average rainfall. No significant weather is
anticipated during this timeframe.

Overall, we don`t expect any tropical formation to occur near the
American Samoa islands throughout the next 7 days.

&&

.Marine...

Due to the moderate northeasterly breeze, seas remained elevated
throughout the morning and early afternoon hours. The PacIOOS buoy
to the east of Aunu`u shows seas remaining around 7 to 8 feet
while 6.5 feet has been recorded to the west of Tutuila. As winds
decrease late this afternoon and evening, seas are expected to
slowly subside. Winds are to become a gentle easterly breeze
tomorrow before becoming variable by Tuesday night and Wednesday.
Since there is no significant swell anticipated to move through
the region, seas are to remain ideal through at least the middle
of the week. However, we are monitoring a trough that is
anticipated to move over the coastal water region by Thursday and
Friday. Peristent and/or heavy rainfall may occur along this
trough. Even though the winds are not projected to be significant,
heavy showers may bring localized gusty winds. For the weekend,
winds are forecast to remain light as the trough moves to the
east.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...

NONE

&&

$$

LaPlante