Heat Persists in the South Central U.S. and Southwest; Heavy rains in the Desert Southwest and Central Plains

Sweltering heat remains across the South-Central Plains, Lower/Middle Mississippi Valley, and the Southwest this week with limited nighttime relief. Thunderstorms will bring heavy rainfall leading to localized flash flooding in portions of the Desert Southwest and central Plains. Isolated strong to severe thunderstorms are possible across portions of the central Plains into the Northeast. Read More >

277
FXZS60 NSTU 090044
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
144 PM SST Tue Sep 8 2026

.Short term...
[TONIGHT THROUGH FRIDAY]...An easterly breeze of 10 to 20 mph will
diminish to 10 to 15 mph later today and persist through Friday.
There may be periods where winds become light and variable, though
winds are generally expected to remain near 10 to 15 mph through
this timeframe. Additionally, the latest upper air sounding from
this afternoon depicts a dry and stable profile, suggesting
limited shower activity. Model guidance indicates this pattern
will remain through Friday.

.Long term...
[FRIDAY NIGHT THROUGH TUESDAY]...A ridge building near New Zealand
is forecast to extend towards the Samoa Island chain Friday night.
This feature will shift winds southeast and strengthen them as it
tracks east through the new week. Breezy conditions are expected
to return Sunday and remain through Tuesday. Meanwhile, a trough
just north of the Samoa Island chain is expected to move over the
Islands Monday and Tuesday, likely bringing an uptick in showers.
However, the risk for flash flooding from this trough is low at
this time.

&&

.Marine...
Wave heights observed at the PacIOOS buoy remain around 6 to 7
feet. All ocean-related advisories have been cancelled as winds
continue to diminish. Seas have also followed this downward trend
and are expected to remain relatively calm through the end of the
week. However, a strong south to southwest swell remains evident
at the King Poloa PacIOOS buoy and is expected to linger through
the week. This swell may elevate surf and rip currents, though
surf is expected to remain below the High Surf Advisory threshold
of 10 feet.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
None

&&

$$

TM