Fire Weather Concerns and Severe Weather

Dry and breezy conditions will bring elevated to critical fire weather conditions across portions of the northern and central High Plains through this weekend, where fuels remain largely receptive. Severe thunderstorms and heavy rainfall are possible from the Plains into the Upper Midwest, as well as in the Ohio Valley and portions of the Mid-Atlantic through this weekend. Read More >

698
FXZS60 NSTU 120108
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
208 PM SST Fri Sep 11 2026

.Discussion...
Fair weather is observed over the territory as a gentle breeze
and isolated showers. The Islands currently sit within a
transition zone as the high pressure system that drove weather
earlier this week continues to move eastward. Meanwhile, another
high pressure system building to the southwest is forecast to take
over weather conditions by Saturday. This pattern will shift east
winds southeast tonight and gradually increase to 15 knots over
the weekend.

As easterly and southeasterly winds converge just north of the
territory, a trough is expected to develop in the area. This
feature will bring an uptick in showers Saturday, with a greater
increase expected Sunday night through Tuesday as the trough
develops further. It remains uncertain how active the trough
would become, but we will continue to monitor how conditions
evolve. Model guidance suggests the trough lingering through the
end of next week before finally moving eastward next Saturday.

&&

.Marine...
Light and variable winds have maintained relatively calm ocean
conditions, with the PacIOOS buoys reporting seas of 4 to 6 feet.
These conditions are expected to continue through Saturday. Seas
will begin to build Saturday night as southeast winds strengthen
to around 15 knots. Although winds will remain below advisory
levels, they may produce choppier, more textured seas.

Meanwhile, a strong south swell will move into the area tonight.
This swell is expected to primarily increase surf and strengthen
rip currents along south-facing shores rather than significantly
increase seas over the open waters. A series of south swells will
continue through the new week.

Wind-driven seas may reach advisory levels by Monday as southeast
winds strengthen to around 20 knots. If the aforementioned trough
becomes active, nearby thunderstorms could produce locally higher
seas and gusty winds.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
None

&&

$$
TM