Significant earthquakes of 1780

September 21, 1780 Earthquake: Montenegro, Balkans NW

September 21, 1780

An earthquake struck Montenegro, Balkans NW on September 21, 1780. It caused a tsunami.

Map

Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.

The earthquake

Date
September 21, 1780
Place
Montenegro, Balkans NW
Intensity
10 on the Modified Mercalli scale
Epicenter
42.400° N, 18.800° E
Country
Montenegro

The toll

Damage
Severe (about $5 to $25 million)

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.

1780 Sept 21, 02:15pm, Ragusa [currently Dubrovnik]. Three violent shocks. The first two succeeded each other almost without any interval, and lasted 60 seconds. Direction E to W. (reference #496, #1879)

However, the earthquake (VII-VIII MCS) was much more violent at Kotor. Albini (2004), referring to Kisˇpatic´ (1891–1895), writes ‘within the Bocche di Cattaro, the sea retreated from the coast and then violently went back’. (reference #9531)

Other significant earthquakes nearby

Within 200 km, the deadliest first.

More

Significant earthquakes of 1780The 1700sRecent earthquakes near hereThis day in weather history

Sources

Significant earthquakes 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 earthquake 1443.