391
FXZS60 NSTU 200058
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago  AS
158 PM SST Thu Sep 19 2024

.Short term...
A trough to the north and frontal boundary to the south of the
Islands will bring the potential for showers tonight through
Friday. A slightly unstable and moist trend via the latest upper
air sounding reflects the influence of the two features. However,
model data depicts the front weakening through Friday as the
high pressure mentioned in previous forecasts continues to build
in the area. Hence, a moderate east breeze and scattered showers
will remain through Friday.

.Long term...
The aforementioned trough to the north may bring an uptick in
showers Saturday through Sunday as it edges towards the
territory. Expect numerous showers for this time, while east winds
of 10 to 20 mph are forecast to continue through Monday. By
Tuesday, another strong high pressure system will build near New
Zealand and extend over the Samoa Island chain through the end of
the forecast period. This feature will shift winds from east to
southeast Tuesday through Thursday.

&&

.Marine...
A high surf advisory is cancelled as surfs have fallen below 10
feet. However, latest surface observations reported white caps
over open waters with winds near 20 knots just south of the
territory. These observations suggests rough ocean conditions,
which warrants a small craft advisory. If winds remain in the 15
to 20 knot range through the new week, expect the advisory to
hold until then.

By Monday, a southwest swell will move in the area and elevate
surfs along the south and west facing shores. Additionally,
strong rip currents will remain until these swells subside in the
area Wednesday.

&&

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

&&

$$

TM