Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

798
FXZS60 NSTU 050040
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
140 PM SST Fri Sep 4 2026

.DISCUSSION...
Model solutions of the atmospheric precipitable water (PWAT)
content , the latest satellite imageries, together with the upper
air observations (RAOB) from this afternoon (05/00Z) show fair
weather conditions remaining across the area. A dry air mass
associated with a high pressure system just south of the islands
will maintain these condtiions for majority of the forecast
period. Model data shows another high pressure system from the
southwest, migrating eastward, once the first high pressure
system exits to the southeast on Saturday. Winds will also
slightly decrease. By Saturday night through at least Tuesday
night, easterlies will remain at a moderate to fresh breeze. As
the week continues to progress, the latter high pressure system
will exit to the southeast as winds return to a gentle to moderate
easterly breeze. Showers embedded wtthin the easterly wind flow
will pass through from time to time throughout this forecast
period. No significant threat is expected for this forecast
period.

&&

.Marine...
Observations from the PacIOOS buoys show seas remaining in the
advisory threshold levels. Long periods peaking at 16 seconds with
heaights around 9 to 11 feet translates to surfs reaching 14 to 15
feet high. Additionally, periods more than 10 seconds indicates
the potential for a high risk of rip currents close to the
shorelines. Model data show these threats and risks remaining for
the rest of the day into tonight, The latest model data also show
a downward trend in seas by early Saturday through the ed of the
forecast period.Thus, will continue to monitor conditions as more
data becomes available.

&&

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

&&

$$

JTAllen