August 26, 1847 Tsunami: Naples, Italy
A tsunami of unknown cause began at Naples, Italy on August 26, 1847. 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, 1847
- Source
- Naples, Italy
- Cause
- Unknown
- Runups recorded
- 1
- Tsunami intensity (Soloviev-Imamura)
- 2
- Waters
- Ocean
- How certain
- Questionable tsunami
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.
1847 (1846 ?), August 26, morning. Tyrrhenian Sea, Bay of Naples. The sea level in Naples suddenly dropped approximately by 1.5 m (5 feet; 5 yards) and returned to its usual state
a few minutes later. (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 |
|---|---|---|---|---|---|---|---|
| Naples | Italy | Eyewitness observation of water height |
More
Every tsunami in 1847The 1800sTsunamis of ItalyThis 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 3353.