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 >

689
FXZS60 NSTU 240057
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
157 PM SST Thu Apr 23 2026

.Short term...
The upper air sounding from this afternoon shows a dry and stable
profile compared to the midnight sounding. Breezy, east winds of
15 to 20 knots are also evident as a strong ridge dominates over
the Samoa Island chain. Although a dry and stable pattern is
known, showers embedded within the trade wind flow could produce
brief showers at times. Hence, scattered showers with winds of 10
to 20 knots will persist through the weekend.

.Long term...
By Monday, the ridge will gradually weaken in the area,
diminishing winds to 10 to 15 knots by Tuesday. However, a mid-
level high pressure anchored over the Samoa Island chain is
expected to maintain stable conditions through the new week.
Meanwhile, another high pressure system at the surface is
forecast to build over New Zealand. This feature will enhance
trades once again for the remainder of the forecast period.

&&
.Marine...
Latest wave heights observed at the PacIOOS buoys are around 5 to
7 feet. Although these heights fall below the advisory threshold
of 8 feet, winds up to 20 knots continues the small craft
advisory for the territory. Observers reported white caps over
open waters, which is an indicator for rough seas. Expect these
conditions to remain through the new week as trade winds persist.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
Small Craft Advisory

&&

$$

TM