Greece earthquakes

M6.4 earthquake 8 km ESE of Kolchikón, Greece

A magnitude 6.4 earthquake struck 8 km ESE of Kolchikón, Greece on Tue, Jun 20, 1978, 11:03 PM GMT+3 (20:03 UTC), 3 km (2 mi) below the surface.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 6.4 (ms), strong
Local time: Tue, Jun 20, 1978, 11:03 PM GMT+3
UTC: 1978-06-20 20:03:21 UTC
Depth: 3.0 km (1.9 mi), shallow
Epicenter: 40.739° N, 23.229° E
Region: Greece
Strongest shaking: IX, violent shaking
Tsunami flag: No
Status: Reviewed by a seismologist

Deaths and damage

From NOAA NCEI’s Significant Earthquake Database (record 4808), matched to this event by time and place.

Deaths: 50
Injuries: Many (about 101 to 1,000)
Damage: $250 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.

NOAA’s full record of this earthquake The tsunami it caused

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated: IX, violent shaking
Peak ground acceleration: 79.0% of gravity
Peak ground velocity: 4.2 cm/s
Map: Automatic

USGS ShakeMap: estimated shaking intensity around the epicenter — Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used: 292

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 3.4 and up: 42 in the 60 days after this one and 17 in the 30 days before it.

After

Before

Earthquakes today Greece earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000v5r (also filed as gcmtb062078a, gcmt19780620200322, atlas19780620200321, iscgem681154). Read Tue, Sep 29, 2026, 8:42 AM UTC.