Name: Heavy Rain in American Samoa, May 10 to 11, 2017
Start: 2017-05-10T03:00
End: 2017-05-11T10:00
Location: American Samoa

Where it happened

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Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

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The toll

Deaths: 0
Injuries: 0
Property damage: $350,000
Crop damage: None recorded
Events: 1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS ASO wrote it up.

Extremely heavy runoffs, landslides, and severe flash flooding were results of heavy rain from an active surface trough near American Samoa. The Weather Service Office in Tafuna recorded over 8 inches of rainfall during the first day of this rainy event, and over 2.40 inches of precipitation on the second day. Yet, higher amounts of rainfall drenched locations near mountains and valleys. Over a dozen homes and private properties were flooded and critically impacted across American Samoa, causing several families to self-evacuate.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 heavy rain. Local standard time, as filed.

Heavy Rain, Tutuila

When: May 10, 3:00 AM SST to May 11, 10:00 AM SST
Where: Tutuila County, 10.23 mi WNW of Vaitogi to 3.68 mi NE of Pago Pago
Property damage: $350,000
Reported by: Local Official
Coordinates: -14.325, -170.832

Extremely heavy runoffs, landslides, and severe flash flooding were results of heavy rain from an active surface trough near American Samoa. The Weather Service Office in Tafuna recorded over 8 inches of rainfall during the first day of this rainy event, and over 2.40 inches of precipitation on the second day. Yet, higher amounts of rainfall drenched locations near mountains and valleys. Over a dozen homes and private properties were flooded and critically impacted across American Samoa, causing several families to self-evacuate.

What these are

Heavy Rain: Rainfall totals unusual for the place and season that did not produce a flood.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in American Samoa in 2017 Every state in 2017 This day in weather history Warnings in American Samoa, May 2017

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 696005.