Synoptic discussion for American Samoa.

971
FXZS60 NSTU 040052
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
152 PM SST Thu Apr 3 2025

.Short term...
A trough will hold unstable conditions over the territory through
tonight. This instability is noticeable on current satellite data
showing thunderstorms developing over Upolu and to the east of
Manu`a. Expect numerous showers with a slight chance of
thunderstorms to remain through at least tonight. As the trough
weakens overnight, expect showers to follow a diminishing trend.
Stable weather is forecast for Friday, which will persist through
the weekend. Expect light winds and isolated showers for this
duration.

.Long term...
Breezy trades winds will build in the area on Monday. Expect east
winds of 10 to 20 mph to prevail through the new week. Showers
embedded within the trade wind flow is also possible for this
term. However, another trough developing just north of the Islands
by Tuesday may enhance the chance for showers for the remainder of
the week.

&&

.Marine...
Latest wave heights observed at the PacIOOS buoys are around 4 to
6 feet. Seas will remain fairly calm through the weekend as light
and variable winds persist. However, breezy trade winds will
gradually elevate seas by Monday, peaking to 7 to 9 feet
midweek.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
NONE

&&

$$

TM

American Samoa's Tropical Cyclone Outlook 2024-2025

Synoptic discussion for American Samoa.