High Surf, Swains
- When
- September 4, 12:00 AM SST to September 5, 12:00 AM SST
- Where
- Swains forecast zone
- Property damage
- $10,000
- Reported by
- Buoy
Two alia boats battled 24 hours out at sea due to steep wave heights.
High Surf in American Samoa, September 4 to 5, 2020
American Samoa was at a boundary of a ridge and trough over the weekend of the first week of September. This episode allowed for tight pressure gradient-influenced winds and flooding conditions.
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $10,000
- 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.
American Samoa was at a boundary of a ridge and trough over the weekend of the first week of September. This episode allowed for tight pressure gradient-influenced winds and flooding conditions. Such winds prompted steep seas for mariners.
Event by event
1 high surf. Local standard time, as filed.
What these are
- High Surf
- Large waves breaking on the shore that caused damage, erosion or casualties.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Excessive Heat and Wildfire in California, September 4 to 30, 2020
- Excessive Heat and Heat in Arizona, September 4 to 7, 2020
- Tornadoes and Wildfire in California, September 4 to 30, 2020
- Excessive Heat in California, September 4 to 7, 2020
- Excessive Heat in California, September 4 to 7, 2020
- Excessive Heat and Heat in California, September 4 to 7, 2020
- Marine Thunderstorm Winds in North Atlantic Coastal Waters, September 4, 2020
- Excessive Heat in California, September 4 to 7, 2020
- Excessive Heat in Nevada, September 4 to 7, 2020
- Excessive Heat in Arizona, September 4 to 7, 2020
- Marine Thunderstorm Winds in Gulf of Mexico, September 4, 2020
- High Wind in Alaska, September 4 to 7, 2020
More
Every storm in American Samoa in 2020Every state in 2020This day in weather historyWarnings in American Samoa, September 2020
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: 909841.