August 26, 1806 Tsunami: Terracina, Italy
A tsunami caused by an earthquake began at Terracina, Italy on August 26, 1806 at 13:20 UTC. 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
- August 26, 1806, 13:20 UTC
- Source
- Terracina, Italy
- Cause
- Earthquake
- Earthquake
- The earthquake
- Runups recorded
- 1
- Tsunami intensity (Soloviev-Imamura)
- 2
- Waters
- Ocean
- How certain
- Questionable tsunami
- Source location
- 41.700° N, 12.700° 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.
"Tyrrhenian Sea, Italy. An earthquake occurred with its focal zone between Rome and Naples, where it was felt. The strongest shock was in Frascati, Genzano (di Roma), Nemi, Velletri. The earthquake was strong on the shore in Ardei, Nettuno, Terracina, where the sea was extremely turbulent" (reference #2130).
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 |
|---|---|---|---|---|---|---|---|
| Terracina | Italy | Eyewitness observation of water height |
More
Every tsunami in 1806The 1800sTsunamis of ItalyThe earthquakeThis day in weather historyAlerts 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 3218.