Various low pressure systems that moved south of the islands had inundated low lying areas of the islands. In the upper levels, strong short waves aloft of Tonga were also moving eastward.
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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.
Various low pressure systems that moved south of the islands had inundated low lying areas of the islands. In the upper levels, strong short waves aloft of Tonga were also moving eastward. On the 10th, 14th and 17th of the month were recorded with an average of 4 inches per day. WSO Pago had issued small stream flood advisory during these dates. The Department of Public Safety reported sewage overflow as well as various streams around the islands. The Department of Public Works reported major reconstructions of the islands main road due to large pot-holes and landslides around mountainous areas. No other damages were reported.
The national radar mosaic for the moment the first event began.
1 heavy rain. Local standard time, as filed.
Heavy showers had inundated low lying areas of the islands on the 10th, 14th, and the 17th of the month. Landslides and large pot-holes on the main road were the major reconstruction reported by the Department of Public Works. WSO Pago issued a Small Stream Flood Advisory prior to these event dates.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in American Samoa in 2009Every state in 2009This day in weather historyWarnings in American Samoa, May 2009
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: 175698.