Greece earthquakes

M5.4 earthquake 18 km ENE of Thérmo, Greece

A magnitude 5.4 earthquake struck 18 km ENE of Thérmo, Greece on Sun, Dec 21, 1975, 6:07 PM GMT+2 (16:07 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.5 12 km ENE of Thérmo, Greece. This one was a foreshock.

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

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The earthquake

Magnitude: 5.4 (ms), moderate
Local time: Sun, Dec 21, 1975, 6:07 PM GMT+2
UTC: 1975-12-21 16:07:55 UTC
Depth: 33.0 km (20.5 mi), shallow
Epicenter: 38.652° N, 21.859° E
Region: Greece
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Depth from: OPERATOR_ASSIGNED
Stations used: 57

Nearest places

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

Nearby

Within 100 km, magnitude 2.4 and up: 75 in the 60 days after this one and 3 in the 30 days before it.

After

The first 60 of 75.

Before

Earthquakes today Greece earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000e05 (also filed as iscgem720651). Read Wed, Sep 23, 2026, 2:39 AM UTC.