Greece earthquakes

M3.5 earthquake 6 km N of Argalastí, Greece

A magnitude 3.5 earthquake struck 6 km N of Argalastí, Greece on Mon, Oct 20, 1980, 7:22 AM GMT+2 (05:22 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.5 11 km ESE of Néa Anchiálos, 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
3.5 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1980-10-20 05:22:45 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
39.285° N, 23.219° 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
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 4.25 km SW of Agriá, Greece · 16784 days ago · 10 km deep · 21 km away
  2. 4.49 km S of Áno Lekhónia, Greece · 16784 days ago · 10 km deep · 16 km away
  3. 3.628 km ESE of Patitírion, Greece · 16779 days ago · 10 km deep · 86 km away
  4. 3.920 km N of Skiáthos, Greece · 16766 days ago · 10 km deep · 23 km away
  5. 3.311 km NNE of Argalastí, Greece · 16765 days ago · 10 km deep · 6 km away
  6. 3.54 km SSW of Agriá, Greece · 16764 days ago · 10 km deep · 19 km away
  7. 4.233 km E of Patitírion, Greece · 16761 days ago · 10 km deep · 91 km away
  8. 3.630 km NW of Skýros, Greece · 16761 days ago · 10 km deep · 99 km away
  9. 4.511 km ESE of Néa Anchiálos, Greece · 16759 days ago · 10 km deep · 25 km away
  10. 4.425 km ESE of Patitírion, Greece · 16759 days ago · 10 km deep · 83 km away
  11. 3.334 km NNW of Patitírion, Greece · 16725 days ago · 10 km deep · 49 km away

Before

  1. 3.34 km SE of Néa Anchiálos, Greece · 16785 days ago · 10 km deep · 31 km away
  2. 3.34 km SSW of Néa Anchiálos, Greece · 16797 days ago · 10 km deep · 36 km away
  3. 3.113 km ENE of Argalastí, Greece · 16801 days ago · 10 km deep · 11 km away
  4. 3.23 km WSW of Néa Anchiálos, Greece · 16801 days ago · 10 km deep · 38 km away
  5. 3.03 km WSW of Agriá, Greece · 16802 days ago · 10 km deep · 21 km away
  6. 3.53 km W of Néa Anchiálos, Greece · 16809 days ago · 33 km deep · 38 km away
  7. 4.59 km NNW of Evxinoúpolis, Greece · 16809 days ago · 42 km deep · 44 km away
  8. 3.26 km NNW of Soúrpi, Greece · 16813 days ago · 10 km deep · 35 km away
  9. 4.06 km W of Argalastí, Greece · 16814 days ago · 10 km deep · 9 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001ab9. Read Sat, Oct 3, 2026, 6:05 PM UTC.