Areas of Severe Thunderstorms and Heat

Scattered severe thunderstorms and excessive rainfall are possible today in the Mid Atlantic, posing a risk for damaging winds and isolated flash flooding. Extreme Heat Warnings are in effect today for northeast Texas into southern Oklahoma and Arkansas. Extreme Heat Warnings are also in effect for the Desert Southwest today into Sunday. Read More >

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FXZS60 NSTU 200100
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
200 PM SST Wed Aug 19 2026

.Discussion...
A high pressure system centered over New Zealand, as well as a
mid-level high pressure system, will continue to dominate weather
patterns through early next week. Expect breezy east to south
east trades and stable conditions to remain through Sunday. Latest
satellite and upper-air data depict moisture extending from a
low pressure system over the Solomon Islands. However, the mid-
level high will likely suppress convective development. If any
showers develop, they will likely be embedded within the
tradewind flow. Hence, expect scattered showers through the
forecast period.

Although the mid-level high is expected to weaken on Sunday, the
surface high will carryon the breezy pattern through the end of
the forecast period.

&&
.Marine...
Wave heights have jumped to 7 feet from the 5 feet observed this
morning from buoy data. Peak periods around 15 feet were also
reported, suggesting large surf and strong rip currents associated
with a south swell. This swell, combined with breezy winds of up
to 15 knots prompted a Small Craft Advisory and High Surf Advisory
this morning. Expect choppy and elevated seas to persist through
the new week due to a prolonged trade wind event. The south swell
is also expected to linger in the area, through Saturday before
moving out of the warning area.

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

&&

$$

TM