Severe Thunderstorms in the Ohio Valley and Mid-Atlantic; Heat Continuing in the Central U.S.

Widespread strong to severe thunderstorms are expected from the Upper Ohio Valley into the Mid-Atlantic through Friday, with damaging winds as the primary threat. Dangerous heat will continue from the South-Central U.S. to the Midwest, Ohio/Tennessee valleys, and Mid-Atlantic. Widespread Major to Extreme Heat Risk is forecast into the weekend and will confine to the South-Central U.S. by Labor Day Read More >

586
FXZS60 NSTU 040041
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
141 PM SST Thu Sep 3 2026

.DISCUSSION...
Mostly cloudy skies with breezy east-southeast winds remain
across the islands. Satellite imageries continue to show fair
weather conditions remaining over the area as a high pressure
system lingers. This is supported by the latest upper air
radiosonde observations (RAOB) this afternoon (04/00Z). An
inversion at the 800 to 760 mb levels confirms an atmosphere
trensitioning into a dry and stable condition. Model data also
show a mid-level high pressure system lingering over the area for
this forecast period. With these features, significant cloud
formation is suppressed, and any possible showers will be brief
and passing. Fresh easterlies will remain for tonight, decreasing
to a gentle to moderate flow on Friday, then increasing again to a
fresh southeast breeze on Saturday through the rest of the
forecast period. Thus, expect dry and breezy conditions to remain
for the rest of the week through the new week.

&&

.Marine...
Model solutions continue to show seas building further tonight
and Friday, before subsiding on Friday night through the end of
the forecast period. Moderate to fresh east-southeast winds will
likely prevail as a strong high pressure system to the south
remains throughout this time frame. By early next week, winds will
gradually decrease as seas also subside. In the meantime, the
threat of high surfs, strong rip currents and rough seas for small
crafts remains for all coastal waters of American samoa.

&&

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

&&

$$

JTAllen