Dangerous Surf and Rip Currents Along East Coast Beaches; Hazardous Heat in the West

Tropical storm conditions, storm surge flooding and coastal flooding will continue into Thursday across the Outer Banks and into portions of the Mid-Atlantic coastline. Life-threatening rip currents and high surf will continue to impact much of the Atlantic shoreline through the end of the week. Hazardous, record heat will continue across the Western U.S. through the weekend. Read More >

156
FXZS60 NSTU 210119
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
219 PM SST Wed Aug 20 2025

.Short term...
Latest satellite loops show fair-weather cumulus over the region
as a mid-level high pressure lingers. Meanwhile, to the north and
south of the territory lie two different troughs. Isolated
showers will gradually change to widespread from tonight through
Thursday night due to the northeast trough. The diminishing mid-
level high pressure and receding surface high to the southwest
will allow the aforementioned trough to approach the territory.
The GFS model has finally aligned with the rest of the model
solutions, which shows the trough becoming active Thursday night
through Friday. Hence, widespread showers and thunderstorm
activity are possible for this timeframe.

.Long term...
By Friday afternoon, the trough will continue to migrate
southwest, thus lowering the potential for flash flooding. Expect
scattered showers and breezy east winds to dominate through
midweek. By the end of the forecast period, another trough is
expected to develop in the area. Expect a possible uptick in
showers for this time.

&&
.Marine...
Wave heights remain around 6 to 8 feet according to the PacIOOS
buoy data. However, peak periods around 16 seconds confirms a
strong swell from the south. This observation suggests high surfs
and hazardous rip currents are likely for south-facing shores. A
High Surf Advisory is in effect until Thursday when swells are
expected to subside. Additionally, a small craft advisory remains
in effect until the breezy pattern subsides next week.

&&

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

&&

$$

TM