Turkey earthquakes

M3.1 earthquake 20 km N of Gökçeada, Turkey

A magnitude 3.1 earthquake struck 20 km N of Gökçeada, Turkey on Sun, Oct 20, 1991, 7:50 PM GMT+2 (17:50 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.4 17 km N of Gökçeada, Turkey. 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
3.1 (Md, duration), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1991-10-20 17:50:22 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
40.388° N, 25.925° E
Region
Turkey
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: 8 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.9Aegean Sea · 12760 days ago · 5 km deep · 56 km away
  2. 2.916 km W of Alexandroupoli, Greece · 12759 days ago · 10 km deep · 55 km away
  3. 3.131 km W of Gökçeada, Turkey · 12754 days ago · 10 km deep · 42 km away
  4. 2.92 km NW of Geyikli, Turkey · 12740 days ago · 10 km deep · 67 km away
  5. 2.9Aegean Sea · 12729 days ago · 10 km deep · 75 km away
  6. 3.236 km N of Mýrina, Greece · 12729 days ago · 10 km deep · 74 km away
  7. 2.57 km S of Sápes, Greece · 12728 days ago · 5 km deep · 67 km away
  8. 3.417 km N of Gökçeada, Turkey · 12719 days ago · 10 km deep · 5 km away

Before

  1. 3.523 km W of Gökçeada, Turkey · 12767 days ago · 9 km deep · 34 km away
  2. 3.837 km NNE of Mýrina, Greece · 12772 days ago · 10 km deep · 62 km away
  3. 2.924 km W of Gökçeada, Turkey · 12774 days ago · 10 km deep · 34 km away
  4. 3.027 km W of Gökçeada, Turkey · 12774 days ago · 10 km deep · 38 km away
  5. 3.5Aegean Sea · 12775 days ago · 10 km deep · 33 km away
  6. 4.822 km W of Gökçeada, Turkey · 12775 days ago · 12 km deep · 32 km away
  7. 3.330 km NNW of Mýrina, Greece · 12776 days ago · 10 km deep · 86 km away
  8. 3.240 km W of Bozcaada, Turkey · 12794 days ago · 10 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0004y37. Read Sat, Oct 3, 2026, 8:11 AM UTC.