Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >

259
FXZS60 NSTU 290059
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
159 PM SST Sun Jun 28 2026

.Discussion...
A trough edging in from the northeast will bring an uptick in
showers tonight through the weekend. Meanwhile, a strong high
pressure system building near New Zealand will continue to
produce strong south to southeast trade winds. Model guidance
shows the two features oscillating back and forth over the
territory throughout the week, bringing breezy conditions and wet
weather.

Latest satellite data show some surface rain already over the
Manu`a islands, tracking toward Tutuila. Widespread showers and
southeast to south winds of 15 to 25 mph with higher gusts will
remain through the forecast period. Heavier rain is possible
Monday through Tuesday, with numerous showers persisting through
the rest of the week due to the lingering trough. The strength of
the high pressure system will determine the placement of the
trough. However, by July 4, the trough is expected to move
farther north and away from the territory.

&&

.Marine...
Elevated wave heights are currently observed at the PacIOOS buoys,
reaching up to 8 feet, with peak periods up to 13 seconds from a
south swell. The combination of trade winds and swell prompted a
high surf advisory this morning. Hazardous ocean conditions will
persist through the forecast period as trade winds and swell
continue across the region. Surf may reach warning criteria by
midweek.

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

&&

$$

TM