Regional Outbreaks of Severe Weather Through Early Next Week; Early Season Heat Wave across the South

Active spring pattern across the center of our nation with several episodes of severe weather and heavy rainfall expected into next week. The potential for very large hail, long track tornadoes, severe wind gusts, frequent cloud to ground lightning strikes and flash flooding are in the outlook. Furthermore, dangerous early season heat wave continues for the Gulf Coast states into early next week. Read More >

365
FXZS60 NSTU 010040
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
140 PM SST Sat May 31 2025

.Discussion...
A trough to the north and high pressure to the south will
be the two main weather features in today`s discussion.
Latest surface observations depicts fair weather cumulus
clouds as the high pressure system dominates in the area.
Additionally, the upper air sounding from this afternoon
shows a dry profile and strong inversion. This suggests
the current environment is unfavorable for cloud growth.
Expect isolated showers this afternoon, becoming scattered
tonight.

The trough to the north is forecast to extend towards the
Samoa Islands Sunday morning. Fair weather may turn into
a numeorus showers for the morning. Minimal rain will
follow Monday night, while breezy winds continue due to
the strong high pressure system.

.Long term...
By Monday night, the high will shift slightly south,
allowing the trough to move over the islands. As a result,
showers are expected to increase from scattered to
widespread and continue into the following week.
Although the trough remains weak, flash flooding is not
expected. Winds will gradually ease to a light breeze by
Thursday night as the high moves out of the area.

&&

.Marine...
Wave heights are currently between 7 and 9 feet due to
persistent trade. However, surfs may be higher due to
a strong swell from the south. These swells are
contributing to strong rip currents and hazardous surf.
Mariners and beachgoers are strongly urged to follow all
advisories, as ocean conditions remain dangerous.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...
High Surf Advisory is in effect
Small Craft Advisory is in effect

&&

$$

TM