Significant earthquakes of 1953

August 9, 1953 Earthquake: Ithaki, Cephalonia, Lefkada, Ionian Islands, Greece

August 9, 1953 · M6.3

A magnitude 6.3 earthquake struck Ithaki, Cephalonia, Lefkada, Ionian Islands, Greece on August 9, 1953 at 07:41:10 UTC, 15 km below the surface. 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
August 9, 1953
Time
07:41:10 UTC
Place
Ithaki, Cephalonia, Lefkada, Ionian Islands, Greece
Magnitude
6.3 (Mw)
Focal depth
15 km (9 mi)
Epicenter
38.216° N, 20.830° E
Country
Greece

The toll

Damage
Extreme (about $25 million or more)

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.

In particular, the earthquake of 9 August 1953 struck the southern Ionian Islands and especially Ithaki, Cephalonia and Lefkada. In Cephalonia, Argostoli was severely affected, with the majority of its buildings damaged by the earthquake. Many buildings on the market and along the beach suffered partial or total collapse. Moreover, villages in the Pylaros area of northern Cephalonia became uninhabitable. On the Erissos peninsula, many buildings in several villages suffered extensive damage. Many buildings in the Sami and Pyrgi areas were also damaged. Less damage was observed in other towns and villages in Cephalonia, though none caused human losses or serious injuries. The traffic from Argostoli to the villages headed northwards was disrupted due to destruction of the road network in several sites. A total of about 200 buildings were ruined by the 9 August earthquake in Cephalonia. (reference #13476)

1953-08-09 07:41:10.83 UTC, 38.216 N 20.83 E, magnitude 6.29 Mw (reference #10476, v.11)

Other significant earthquakes nearby

Within 200 km, the deadliest first.

More

Significant earthquakes of 1953The 1900sEvery quake the USGS located in 1953Recent 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 10841.