Severe Weather and Heavy Rain from the Mid-South to the Mid-Atlantic; Building Heat in the West

Severe thunderstorms may bring damaging winds, a couple of tornadoes, and heavy rain across portions of the Mid-Atlantic into the Mid-South. Severe storms may produce hail across the northern/central High Plains. Hazardous heat will linger across the southern U.S. and build across the West through mid-week. Fire weather concerns continue for Interior Alaska and the Four Corners region. Read More >

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FXZS60 NSTU 220007
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
107 PM SST Sun Jun 21 2026

.Short term...
A strong high pressure system ushered in cool air temperatures
around 76 degrees Fahrenheit and dry weather for the Samoa
Islands this morning. A 180 turn from wet and windy conditions
yesterday that was associated with a trough. Latest satellite data
shows fair weather with the high pressure that is pushing the
trough further north. Partly cloudy skies and isolated showers are
forecast to remain through midweek, though cool air temperatures
may hold until tomorrow.

Winds will continue to diminish through Tuesday, and continue from
the south around 10 knots.

.Long term...
As the high pressure system moves east, expect winds to shift
east to southeast on Wednesday, while maintaining a gentle breeze.
However, as this high pressure exits the region on Wednesday,
another strong high pressure system building near New Zealand is
expected to return southeast trades for the territory once again,
but this time not as windy.

&&

.Marine...
A strong south swell and breezy weather continues to produce high
wave heights for the territory, ranging between 8 to 10 feet.
These waves are observed at the PacIOOS buoy stations, also
recording peak periods of 15 to 16 seconds. Hence, the high surf
advisory and small craft advisory remains in effect.

Expect rough ocean conditions and high surfs to remain through at
least Monday night, before diminishing below advisory thresholds
on Tuesday. Calmer seas are forecast to remain Tuesday and
Wednesday as swells and winds subside. However, southeast winds
up to 15 knots is forecast to return choppy ocean conditions by
Thursday and possibly large surf due to another swell passing from
the south.

&&

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

&&

$$

TM