Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

527
FXZS60 NSTU 280122
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
222 PM SST Thu Aug 27 2026

.Discussion...
The field of cumulus clouds that brought passing showers over the
territory yesterday continues to shift eastward following the
tradewind flow. Upstream, a drier pattern is evident, associated
with a high pressure system to the south. This feature continues
to generate breezy trades for the Samoa Islands and is expected to
persist through Saturday. By Sunday, model guidance shows a trough
dipping southward over the territory. An uptick in showers is
possible during this time, lasting into Monday. However, the
intensity of rainfall remains uncertain.

Another high pressure system building near New Zealand will
return east to southeast trades on Tuesday. This system is
expected to weaken the trough and return a breezy pattern with
scattered showers through the end of the week.

&&
.Marine...
A High Surf and Small Craft Advisory remain in effect as a
prolonged easterly tradewind event continues. Latest buoy data
observed wave heights between 10 to 12 feet, which is expected to
peak through Friday, before subsiding into the weekend as winds
briefly weaken to 10 to 15 knots. Although wave heights are
forecast to drop, seas are anticipated to be elevated through the
new week as another high pressure system returns tradewinds Monday
night. In the meantime, seas may linger within advisory
thresholds for the forecast period.

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

&&

$$

TM