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Heavy Rain · American Samoa
Heavy Rain May 18, 2026 · Tutuila, American Samoa
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
The Manager of the Road Maintenance Division of Public Works reported a landslide that occurred in Fagamutu Village that covered both sides of the main road to halt traffic. The nearby Poloa Village American Samoa Power Authority/University of Hawaii Mesonet station recorded 2.61 inches of rainfall between 1 PM and 2 PM along with other heavy rainfall in the previous 3 days. Monetary damage is estimated.
The wider storm
A strong high pressure system centered to the south of Fiji moved a trough from the south of American Samoa onto the territorial islands on May 16th through the 18th. This stationary weather pattern lead to over 9.68 inches of rain recorded at WFO American Samoa. This includes 3.55 inches that fell in two hours on the afternoon of the 18th. This intense rainfall led to widespread flash flooding throughout the territory. Multiple landslides were also reported due to the intense rainfall on saturated soils.
Began near Vaitogi (-14.3300, -170.8167).
Source: NOAA Storm Events Database, event 1338931. Narratives are written by the National Weather Service forecast office that issued the report.
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