Wet and Cool in the East this Memorial Day Weekend; Well Above Normal Temperatures in the Northern Plains

A wet Memorial Day weekend is in store for the East, with widespread rainfall of 1 to more than 2 inches expected from the Gulf Coast to southern New England. Well above normal temperatures are forecast to build across the northern Plains. Another round of heavy to excessive rainfall is expected to impact the western Gulf Coast this weekend with Flood Watches in effect. Read More >

839
FXZS60 NSTU 240038
AFDPPG

Area Forecast Discussion
National Weather Service Pago Pago AS
138 PM SST Sat May 23 2026

.Short term...

Mostly sunny skies remained over the American Samoa islands this
morning and the early afternoon hours. Satellite imagery shows a
trough to the north, while a high pressure system kept the
southeasterly winds remaining around 10 to 15 mph. This weather
pattern is expected to remain through at least Sunday afternoon
with only a risk of a passing shower.

By Sunday evening and into early next week, the aforementioned
trough is expected to move southward as the high pressure weakens.
The trough is forecast to move over the islands during the
overnight hours and to remain through Tuesday night. The risk of
showers increases to numerous to widespread during this time with
more clouds than sun. Even though the heaviest rainfall is
expected to be to the south of the islands, we will continue to
monitor as the weather pattern begins to change. As the trough
moves over the territory, winds are to decrease is it shifts
northwestward by Tuesday.

.Long term...

For Wednesday through next weekend, severe weather is not
anticipated. The aforementioned trough is to move away from the
region by mid-week. Wind are to become southeasterly, but it won`t
be until late in the week and the weekend until the trades reach
over 10 mph. Rainfall becomes scattered (40% chance) passing
showers throughout this time with more sun than clouds during the
day

&&

.Marine...

The southeasterly moderate breeze is keeping seas elevated
throughout the American Samoa coastal waters today. Overall, sea
are to remain elevated through early next week and the Small Craft
Advisory to remain in effect. Even though winds are anticipated to
weaken by Memorial Day, the southeasterly swell is to keep seas
around 8 feet before finally beginning to ease starting on
Wednesday through late next week. The southeasterly swell is to be
strong enough to likely keep the High Surf Advisory in effect
through midweek.

&&

.PPG WATCHES/WARNINGS/ADVISORIES...

A High Surf Advisory remains in effect through Wednesday.
A Small Craft Advisory remains in effect.

&&

$$

LaPlante