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Flash Flood · American Samoa
Flash Flood 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
A social media post shows flash flooding from heavy rainfall during the afternoon of the 18th in Malaeloa Village. Pictures show significant overflow from Fuafua stream. 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 (-14.3373, -170.7759).
Source: NOAA Storm Events Database, event 1340377. Narratives are written by the National Weather Service forecast office that issued the report.
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