American Samoa, 2017

Flash Flood in American Samoa, December 10, 2017

December 10, 2017 · NWS ASO · 1 event in 1 county or zone

Moisture from SPCZ fueled heavy showers across the territory. The rain produced flash flooding of small streams and drainage outlets.

Where it happened

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  • Tornadoes
  • Tropical storms and surge
  • Floods
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  • Hail
  • Winter weather
  • Heat and drought
  • Cold
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  • Marine and coastal
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The toll

Deaths
0
Injuries
0
Property damage
None recorded
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.

Moisture from SPCZ fueled heavy showers across the territory. The rain produced flash flooding of small streams and drainage outlets. The Weather Service Office recorded a total of 2.27 inches of rainfall, hence, showers were heavier over mountainous area.

The radar

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

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Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, Tutuila

When
December 10, 3:41 AM SST to 9:12 AM SST
Where
Tutuila County, 4.49 mi NW of Vaitogi to 10.07 mi E of Pago Pago
Cause
Heavy Rain
Reported by
Official NWS Observations
Coordinates
-14.363, -170.755

Moisture from the SPCZ triggered heavy showers over the territory. The rain produced flash flooding of small streams and drainage outlets. The Weather Service Office recorded a total of 2.27 inches of rainfall, hence, showers were heavier over the mountainous area.

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

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

The same day elsewhere

More

Every storm in American Samoa in 2017Every state in 2017This day in weather historyWarnings in American Samoa, December 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: 729527.