December 856 Earthquake: Korinthos,patrai (Patras), Greece
An earthquake struck Korinthos,patrai (Patras), Greece in December 856. It killed 45,000 people.
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
- December 856
- Place
- Korinthos,patrai (Patras), Greece
- Tsunami
- None recorded
- Epicenter
- 37.900° N, 22.900° E
- Country
- Greece
The toll
- Deaths
- 45,000
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.
856, December. Corinth, Greece, 45,000 lives lost. Intensity III which corresponds to an earthquake which destroyed towns and devastated districts. (reference #1055)
Other significant earthquakes nearby
Within 200 km, the deadliest first.
- July 7, 551, Schisma, Boetia, Greece
- June 426 BC, Euboea, Greece
- June 7, 1750, Morea,cerigo, Greece
- August 12, 1953, Lixouri-Argostoli (Kephallenia), Greece
- December 29, 1820, Zakinthos (Zante), Greece
- August 27, 1886, Triphylie (Peleponese), Philiatra, Greece
- April 20, 1894, Locride, Malesina-Martinon (Lokris), Greece
- September 7, 1999, Athens, Greece
- August 23, 1817, Aeghion, Achaia, Greece
- February 25, 1742, Zakynthos, Greece
- August 1, 1870, Itea Delphi (Phokis), Greece
- September 30, 1870, Greece
- January 30, 1785, Patrai (Patras), Zakynthos (Zante), Greece
- March 9, 1965, Alonisos, Skopelos, Greece
- April 5, 1965, Southern, Greece
More
Significant earthquakes of 856The 800sRecent earthquakes near here
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 227.