Greece earthquakes

M4.6 earthquake 10 km NNE of Galatás, Greece

A magnitude 4.6 earthquake struck 10 km NNE of Galatás, Greece on Mon, Jun 30, 1975, 9:40 PM GMT+3 (18:40 UTC), 27 km (17 mi) below the surface.

A larger quake followed: M5.4 2 km NE of Náfpaktos, Greece. This one was a foreshock.

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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
4.6 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1975-06-30 18:40:30 UTC
Depth
27.0 km (16.8 mi), shallow
Epicenter
38.444° N, 21.595° E
Region
Greece
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
4.6mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed
5.0Mw, momentISC-GEM global catalogFinal · ±0.2

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
39

Nearest places

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

Nearby

Within 100 km, magnitude 1.6 and up: 16 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 4.14 km NNW of Mesolóngi, Greece · 18720 days ago · 48 km deep · 17 km away
  2. 3.610 km E of Thérmo, Greece · 18720 days ago · 56 km deep · 22 km away
  3. 3.713 km E of Thérmo, Greece · 18719 days ago · 17 km deep · 25 km away
  4. 4.12 km SSE of Mataránga, Greece · 18719 days ago · 37 km deep · 12 km away
  5. 3.926 km ENE of Thérmo, Greece · 18719 days ago · 61 km deep · 39 km away
  6. 3.913 km ESE of Thérmo, Greece · 18719 days ago · 37 km deep · 22 km away
  7. 3.612 km NNW of Kyllíni, Greece · 18719 days ago · 23 km deep · 62 km away
  8. 3.612 km NNW of Náfpaktos, Greece · 18718 days ago · 55 km deep · 15 km away
  9. 3.61 km N of Neochórion, Greece · 18717 days ago · 17 km deep · 28 km away
  10. 4.04 km NNE of Galatás, Greece · 18717 days ago · 33 km deep · 5 km away
  11. 3.75 km NW of Manoláda, Greece · 18707 days ago · 37 km deep · 47 km away
  12. 5.42 km NE of Náfpaktos, Greece · 18695 days ago · 37 km deep · 22 km away
  13. 3.215 km N of Kamárai, Greece · 18695 days ago · 50 km deep · 38 km away
  14. 3.35 km ESE of Ovriá, Greece · 18695 days ago · 41 km deep · 35 km away
  15. 3.76 km SSE of Mesolóngi, Greece · 18683 days ago · 33 km deep · 18 km away
  16. 3.716 km N of Kamárai, Greece · 18682 days ago · 65 km deep · 36 km away

Before

  1. 3.84 km NNW of Galatás, Greece · 18721 days ago · 34 km deep · 7 km away
  2. 5.44 km SSW of Thérmo, Greece · 18721 days ago · 11 km deep · 11 km away
  3. 4.311 km SE of Gavaloú, Greece · 18722 days ago · 39 km deep · 3 km away
  4. 3.613 km N of Kamárai, Greece · 18727 days ago · 88 km deep · 35 km away
  5. 4.311 km NW of Lápas, Greece · 18728 days ago · 33 km deep · 39 km away
  6. 4.02 km SE of Spercheiáda, Greece · 18744 days ago · 31 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000bud (also filed as iscgem728423). Read Thu, Oct 1, 2026, 5:18 AM UTC.