Thunderstorms associated with an upper-level trough produced flash flooding across the territory resulting to flooding in low-lying areas and stalled cars.
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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.
The episode as NWS ASO wrote it up.
Thunderstorms associated with an upper-level trough produced flash flooding across the territory resulting to flooding in low-lying areas and stalled cars.
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
The national weather service office recorded 2.45 inches of rain within this 24 hour period. Numerous reports of flooding on roadways and stalled cars were received during this event.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in American Samoa in 2021Every state in 2021This day in weather historyWarnings in American Samoa, December 2021
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: 996773.