715
FXZS60 NSTU 280155
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago  AS
255 PM SST Thu Jun 27 2024

.Short term...

After receiving some light passing showers throughout the morning
over American Samoa, satellite imagery as of early this afternoon
shows the majority of the showers to the west and northwest of the
territory. The trough will continue to push most of the rain off
to the west tonight and overnight, but we can`t rule out a few
passing showers that may move over the islands. If showers occur,
it will be in the passing form and flash flooding is not expected.
The easterlies are forecast to remain around 15 mph through
tomorrow. On Friday morning, the risk of showers decrease as drier
than average air moves over the region but the possibly of showers
increases back to scattered showers in the afternoon.

For the weekend, a trough from the southwest will move towards
the territory. However, a low pressure system helps steer the
trough more to the south of the territory than originally
expected. Therefore, showers are forecast to be scattered and
severe weather is not likely. Winds decrease slightly on Saturday,
but back to around 15 to 20 mph the overnight hours and on
Sunday.

.Long term...

Another strong ridge builds over American Samoa from Sunday night
through the middle of the week. Breezy east/southeasterly trades
will increase up to around 25 mph. Below average rainfall is
expected, but there may be a few passing showers during this time.
Heavy rainfall is not expected.

&&

.Marine...

The latest information from the PacIOOS buoy to the east of Aunu`u
shows seas around 7 feet. As easterlies remain moderate, seas
haven`t been building as fast as expected. However, winds may
reach up to 20 knots at times throughout the day tomorrow and the
weekend. Wind driven seas are forecast to build up to 7 to 9 feet
by early Friday and to remain through the first half of the
weekend. As the easterlies increase to a fresh breeze for the
second half of the weekend and into early next week, seas are
likely to build to 8 to 10 feet.

A southerly swell is anticipated to start moving through the
territorial water overnight tonight. The longer period waves along
with the elevated seas will likely bring surf levels to the High
Surf Advisory criteria at that time. The period timing will
slowly decrease through early Sunday. We will begin the High Surf
Advisory to be in effect late this evening through at least early
Sunday.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...

A High Surf Advisory will be in effect beginning late tonight.
A Small Craft Advisory remains in effect.

&&

$$

LaPlante