American Samoa, 2018

Flash Flood in American Samoa, September 13, 2018

September 13, 2018 · NWS ASO · 1 event in 1 county or zone

Synoptic: A weak trough lingering across the forecast area.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • 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
$5,000
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.

Synoptic: A weak trough lingering across the forecast area.

The radar

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

Open the radar archive at this moment

Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, Tutuila

When
September 13, 12:00 AM SST
Where
Tutuila County, 14.52 mi NE of Pago Pago to 16.44 mi WNW of Vaitogi
Cause
Heavy Rain
Property damage
$5,000
Reported by
Official NWS Observations
Coordinates
-14.137, -170.463

WSO Pago Pago recorded at least 1.69 of rainfall in 5 hours.

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 2018Every state in 2018This day in weather historyWarnings in American Samoa, September 2018

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: 808615.