Tsunamis in 1843

September 14, 1843 Tsunami: Dubrovnik, Croatia

September 14, 1843 · Very doubtful tsunami

A tsunami caused by a magnitude 6.5 earthquake began at Dubrovnik, Croatia on September 14, 1843 at 10:30 UTC. Its effects were recorded at 2 places.

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

Tsunami warnings in force

The tsunami

Date
September 14, 1843, 10:30 UTC
Source
Dubrovnik, Croatia
Cause
Earthquake
Earthquake
Magnitude 6.5
Runups recorded
2
Tsunami intensity (Soloviev-Imamura)
4
Waters
Ocean
How certain
Very doubtful tsunami
Source location
42.600° N, 18.100° E

The toll

Damage
Moderate (about $1 to $5 million) with the earthquake or eruption that caused it
Houses damaged
Some (about 51 to 100) with the earthquake or eruption that caused it

Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.

What the record says

NCEI’s account, from the sources it cites.

1843, September 14 (October 11). Fishermen in thee open sea, 6 miles off the shore, did not feel anything, as the sea was very heavy in the harbour of Gravosa (Gravesa - ref.) and in the Bay of Dubrovnik. From other data, the sea level in Dubrovnik became extraordinary high. (reference #2130)

1843 Sept 14-15. A series of earthquakes aroused Dubrovnik on 14 and 15 September 1843. The morning of 14 September was bright and calm with a fresh ‘bora’ wind blowing. In the afternoon, two strong vertical shocks (VII) occurred, followed by several weaker ones. Two more violent shocks followed the next day; the second one, which occurred at 1 h 34 min pm, was preceded by a strong detonation and an abrupt fall in air pressure [...] An interesting report was sent from Dubrovnik: ‘At sea six miles away from the coast the fishermen did not feel any shaking, whereas the sea was extremely agitated in the port of Gruz and Dubrovnik (Gazzetta di Zara 1843; Eco del Litorale Ungarico 1843; Perrey 1850; Kispatic 1891–1895) (Fig. 17). In Gazzetta di Zara of 29/09 (and Eco Litorale Ungarico of 07/10), we also find the following note: ‘Master Babarovich of Austrian navy from Milna, returning from Malta and approaching Mljet, felt a push so strong that they thought the boat had hit an underwater cliff’. This note explicitly refers to 14 September. However, the note on the agitated sea at Gruz and Dubrovnik is related in most catalogues (Ambraseys 1962; Karnik 1971; Soloviev et al. 2000) to the same date, whereas from the original reports, it is not clear whether it refers to 14 or 15 September. In any case, the two cited reports describe the effects of a seaquake, giving no evidence of a tsunami. (reference #9531)

Every runup

Nearest the source first. Heights are above sea level at the time; a tide gauge reads half the wave’s full height.

WhereCountryKm from sourceWater height, mInland, mMeasured byFirst wave, UTCDeaths
DubrovnikCroatia8Eyewitness observation of water height
Harbour of GravosaCroatiaEyewitness observation of water height

More

Every tsunami in 1843The 1800sTsunamis of CroatiaThe 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 735.