Greece earthquakes

M3.3 earthquake 19 km SSW of Kassándreia, Greece

A magnitude 3.3 earthquake struck 19 km SSW of Kassándreia, Greece on Tue, Jul 23, 1991, 4:30 PM GMT+3 (13:30 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.8 9 km S of Sykiá, 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
3.3 (Md, duration), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1991-07-23 13:30:01 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
39.874° N, 23.361° 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

Nearest places

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

Nearby

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

After

  1. 1.76 km SSE of Galátista, Greece · 12856 days ago · 10 km deep · 60 km away
  2. 2.04 km SSE of Galátista, Greece · 12854 days ago · 10 km deep · 62 km away
  3. 1.50 km SSE of Triandría, Greece · 12854 days ago · 10 km deep · 88 km away
  4. 2.68 km N of Gónnoi, Greece · 12852 days ago · 10 km deep · 77 km away
  5. 2.17 km ENE of Skiáthos, Greece · 12851 days ago · 10 km deep · 77 km away
  6. 2.39 km NE of Skiáthos, Greece · 12846 days ago · 10 km deep · 75 km away
  7. 2.412 km N of Skiáthos, Greece · 12845 days ago · 10 km deep · 67 km away
  8. 2.439 km NNE of Patitírion, Greece · 12841 days ago · 10 km deep · 66 km away
  9. 3.518 km NE of Istiaía, Greece · 12840 days ago · 10 km deep · 90 km away
  10. 2.17 km NNW of Néa Apollonía, Greece · 12839 days ago · 10 km deep · 90 km away
  11. 3.111 km ENE of Istiaía, Greece · 12835 days ago · 10 km deep · 100 km away
  12. 2.36 km SE of Kalýves Polygýrou, Greece · 12826 days ago · 10 km deep · 42 km away
  13. 2.12 km SE of Arnaía, Greece · 12822 days ago · 10 km deep · 70 km away
  14. 2.12 km E of Rizómylos, Greece · 12822 days ago · 10 km deep · 71 km away
  15. 2.24 km WSW of Arnaía, Greece · 12820 days ago · 10 km deep · 68 km away
  16. 2.810 km SW of Sykiá, Greece · 12819 days ago · 5 km deep · 44 km away
  17. 3.012 km SSW of Sykiá, Greece · 12819 days ago · 10 km deep · 47 km away
  18. 1.74 km WSW of Gerakaroú, Greece · 12817 days ago · 10 km deep · 84 km away
  19. 2.911 km N of Agiá, Greece · 12816 days ago · 10 km deep · 53 km away
  20. 2.810 km NE of Istiaía, Greece · 12816 days ago · 10 km deep · 96 km away
  21. 3.18 km SSW of Skiáthos, Greece · 12816 days ago · 10 km deep · 87 km away
  22. 3.89 km S of Sykiá, Greece · 12807 days ago · 17 km deep · 52 km away
  23. 3.022 km SE of Sykiá, Greece · 12807 days ago · 10 km deep · 63 km away
  24. 2.915 km SSE of Sykiá, Greece · 12807 days ago · 10 km deep · 53 km away
  25. 3.012 km S of Sykiá, Greece · 12806 days ago · 10 km deep · 50 km away
  26. 3.210 km ENE of Skiáthos, Greece · 12805 days ago · 10 km deep · 77 km away
  27. 3.22 km S of Thessaloníki, Greece · 12804 days ago · 5 km deep · 91 km away
  28. 3.80 km NE of Políchni, Greece · 12804 days ago · 10 km deep · 95 km away
  29. 2.41 km E of Ágios Pávlos, Greece · 12800 days ago · 5 km deep · 91 km away
  30. 3.211 km ENE of Kallithéa, Greece · 12798 days ago · 10 km deep · 32 km away

Before

  1. 2.520 km SSW of Kassándreia, Greece · 12870 days ago · 10 km deep · 4 km away
  2. 4.324 km SSW of Kassándreia, Greece · 12870 days ago · 10 km deep · 5 km away
  3. 1.633 km SSW of Kassándreia, Greece · 12871 days ago · 10 km deep · 14 km away
  4. 2.920 km SSW of Kassándreia, Greece · 12871 days ago · 7 km deep · 2 km away
  5. 2.25 km SW of Ormýlia, Greece · 12876 days ago · 10 km deep · 44 km away
  6. 1.95 km NNE of Símantra, Greece · 12876 days ago · 10 km deep · 58 km away
  7. 1.53 km ENE of Asvestochóri, Greece · 12877 days ago · 10 km deep · 90 km away
  8. 2.51 km NNE of Panórama, Greece · 12877 days ago · 10 km deep · 85 km away
  9. 1.83 km WNW of Kalamariá, Greece · 12877 days ago · 10 km deep · 89 km away
  10. 1.87 km SE of Galátista, Greece · 12878 days ago · 10 km deep · 60 km away
  11. 2.531 km N of Skiáthos, Greece · 12880 days ago · 5 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0004uhk. Read Sun, Oct 4, 2026, 12:26 PM UTC.