1819 Tsunami: Asuncion Island, N. Mariana Islands, US Territories
A tsunami caused by a volcano began at Asuncion Island, N. Mariana Islands, US Territories in 1819. Its effects were recorded at 1 place.
Where the waves reached
The source (white) and every runup with a place, colored by the water height recorded there. A ring is a runup NCEI marks doubtful.
- Under 1 m
- 1 to 3 m
- 3 to 10 m
- 10 to 30 m
- 30 m and more
- Height not recorded
The tsunami
- Date
- 1819
- Source
- Asuncion Island, N. Mariana Islands, US Territories
- Cause
- Volcano
- Volcano
- The eruption that caused it
- Runups recorded
- 1
- Tsunami intensity (Soloviev-Imamura)
- 1
- Tsunami magnitude (Iida)
- 1
- Waters
- Ocean
- How certain
- Questionable tsunami
- Source location
- 19.670° N, 145.400° E
The toll
The record gives no deaths, injuries or damage for this tsunami.
What the record says
NCEI’s account, from the sources it cites.
Reference #414:
1819. Mariana Islands. There was a strong explosion of a volcano on Asuncion Island. There are no details.
Every runup
Nearest the source first. Heights are above sea level at the time; a tide gauge reads half the wave’s full height.
| Where | Country | Km from source | Water height, m | Inland, m | Measured by | First wave, UTC | Deaths |
|---|---|---|---|---|---|---|---|
| Asuncion Is, N Mariana Islands, MP | US Territories | 0 | Eyewitness observation of water height |
More
Every tsunami in 1819The 1800sTsunamis of US TerritoriesThe eruptionAlerts in force
Sources
Tsunami events and runups from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. NCEI tsunami event 623.