Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday 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. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

138
FXZS60 NSTU 270041
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
141 PM SST Wed Aug 26 2026

.Discussion...
Latest satellite data indicate a field of convective cumulus moving
in from the east. These clouds are associated with a weak trough
that may enhance showers for the territory tonight through
Thursday. However, the risk for flash flooding associated with
this trough is low due to a mid to upper level jet that would cap
any significant development. Nonetheless, numerous showers will
remain in tonight`s forecast through Thursday afternoon before
transitioning to scattered thereafter as the trough diminishes.
Additionally, a high pressure system to the southeast will
maintain breezy east tradewinds for the area through Saturday.

A trough to the north is forecast to bring some showers through
the new week, especially as the aforementioned high pressure
system tracks farther east. East winds of 10 to 15 mph, becoming
a gentle breeze at times, will persist Sunday through Monday
night. Meanwhile, the trough to the north is expect to increase
showers once again Sunday night. Another high pressure system
building near New Zealand will enhance winds by Tuesday, though
moisture from the northern trough could result in showers
embedded within the tradewind flow into midweek.

&&
.Marine...
Wind-generated waves from prolonged east trades continue to build
across coastal waters. Current buoy observations show wave
heights around 8 feet and climbing as winds remain near 20 knots.
Model guidance holds hazardous ocean conditions through the new
week as these winds persist.

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

&&

$$

TM