Flash Flood · American Samoa

Flash Flood May 17, 2023 · Manu'a, American Samoa

$250K

Damage as recorded

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Emergency Management reported a landslide due to heavy rainfall between the villages of Fitiuta and village of Ta'u on the island of Ta'u during the early morning hours of May 17th. The landslide caused large boulders to topple over the only road that connects the two villages. Heavy rainfall also cause erosion underneath the road to create significant damage to the roadway making it impassible. There were no injuries.

The wider storm

A strong trough moved over the American Samoa islands on May 17th to cause widespread flash flooding in the region. The highest amount of rainfall recorded was from an ASPA (American Samoa Power Authority) weather station, which recorded 9.10 inches of rainfall at Fagaitua throughout the day. The majority of this rainfall came between 100 and 700SST. WSO Pago Pago received 2.83 inches during this time.

Began near Ta'u (-14.2139, -169.4675).

Source: NOAA Storm Events Database, event 1093389. Narratives are written by the National Weather Service forecast office that issued the report.

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