Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Severe thunderstorms are expected across parts of the central and southern High Plains, central Great Lakes, and Ozarks Wednesday. Read More >

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FXZS60 NSTU 260121
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
221 PM SST Tue Aug 25 2026

.Short term...
TONIGHT THROUGH THURSDAY NIGHT...High pressure to the far
southwest will continue to hold strong trades south of the
islands. A weak trough to the south will keep trades at breezy
flow tonight before shifting east on Wednesday. As the weak
trough moves up north, showers will increase to numerous on
Wednesday night through Thursday night. Also, east winds will
strengthen to strong flow across the islands on Wednesday.

.Long term...
FRIDAY THROUGH TUESDAY...Stable weather will move across the
islands on Friday as the aforemention trough shifts north.
However, a shortwave trough from the east will again increase
showers on Sunday night and Monday. As the trough pass west on
Monday night, a ridge to the southeast will bring stable weather
across the territory. Strong winds will slightly diminish to
breezy flow on Sunday. These wind conditions will persist through
Tuesday.

&&

.Marine...
Seas have gradually subside 7 to 9 feet in the last few hours.
These rough conditions will persist tonight through Wednesday. As
trades strengthen again on Wednesday night, seas will also build 9
to 12 feet through Friday night. As winds shift east and diminish,
seas will also subside 7 to 9 feet across the territory.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
High Surf Advisory remains in effect
Small Craft Advisory remains in effect

&&

$$