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 >

898
FXZS60 NSTU 300011
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
111 PM SST Sun Mar 29 2026

.Discussion...
Thunderstorms associated with the active trough we`ve been
monitoring these past few days have shifted slightly north.
However, the risk for flash flooding remains as the trough
lingers in the area. Model guidance keeps the trough anchored
over the Samoa Island chain through midweek before shifting south.
However, remnants of moisture from the trough will linger through
the weekend.

Expect widespread showers with a chance of thunderstorms to
continue through at least Tuesday, then trending to scattered
Wednesday through the end of the week. Winds on the other hand
will persist up to 10 mph from the north until Thursday, before
shifting east when the trough exits the region.

&&
.Marine...
Ocean conditions remain fairly calm as winds are light and
variable. However, PacIOOS data shows a set of south swells
passing through the area as wave periods of 14 seconds are
observed. Nonetheless, seas will persist below advisory
thresholds through midweek, though nearby thunderstorms could
elevate it at times.

.PPG WATCHES/WARNINGS/ADVISORIES...
Flash Flood Watch

&&

$$

TM