Turkey earthquakes

M2.7 earthquake 12 km S of Marmara, Turkey

A magnitude 2.7 earthquake struck 12 km S of Marmara, Turkey on Sun, Apr 21, 1991, 4:09 PM GMT+3 (13:09 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.0 24 km WNW of Gelibolu, Turkey. This one was a foreshock.

Erdek forecastMore in Turkey

Map

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

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The earthquake

Magnitude
2.7 (Md, duration), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1991-04-21 13:09:50 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
40.472° N, 27.545° 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: 35 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.617 km S of Marmara Ere?lisi, Turkey · 12948 days ago · 10 km deep · 50 km away
  2. 2.89 km WSW of Band?rma, Turkey · 12940 days ago · 10 km deep · 32 km away
  3. 3.014 km NNE of Gönen, Turkey · 12938 days ago · 10 km deep · 30 km away
  4. 3.010 km NW of Bal?kesir, Turkey · 12932 days ago · 10 km deep · 87 km away
  5. 2.68 km NE of Marmara, Turkey · 12931 days ago · 10 km deep · 21 km away
  6. 2.89 km ESE of Manyas, Turkey · 12929 days ago · 10 km deep · 68 km away
  7. 2.71 km E of Gönen, Turkey · 12929 days ago · 10 km deep · 42 km away
  8. 2.510 km NNW of Susurluk, Turkey · 12928 days ago · 10 km deep · 71 km away
  9. 2.711 km WNW of Bal?kesir, Turkey · 12928 days ago · 10 km deep · 91 km away
  10. 2.418 km NE of Karacabey, Turkey · 12927 days ago · 10 km deep · 83 km away
  11. 3.118 km W of Mudanya, Turkey · 12925 days ago · 10 km deep · 95 km away
  12. 2.721 km SSW of Kumba?, Turkey · 12925 days ago · 10 km deep · 31 km away
  13. 2.78 km SW of Gönen, Turkey · 12916 days ago · 10 km deep · 46 km away
  14. 2.48 km WNW of Band?rma, Turkey · 12915 days ago · 10 km deep · 31 km away
  15. 2.89 km SSE of Manyas, Turkey · 12914 days ago · 10 km deep · 69 km away
  16. 2.524 km ENE of Biga, Turkey · 12914 days ago · 10 km deep · 19 km away
  17. 3.226 km WNW of Gelibolu, Turkey · 12912 days ago · 10 km deep · 98 km away
  18. 3.225 km WNW of Gelibolu, Turkey · 12911 days ago · 10 km deep · 97 km away
  19. 4.024 km WNW of Gelibolu, Turkey · 12911 days ago · 27 km deep · 96 km away
  20. 3.027 km WNW of Gelibolu, Turkey · 12911 days ago · 10 km deep · 99 km away
  21. 2.925 km WNW of Gelibolu, Turkey · 12911 days ago · 10 km deep · 97 km away
  22. 2.825 km WNW of Gelibolu, Turkey · 12911 days ago · 10 km deep · 97 km away
  23. 2.926 km WNW of Gelibolu, Turkey · 12910 days ago · 10 km deep · 97 km away
  24. 2.69 km N of Band?rma, Turkey · 12909 days ago · 10 km deep · 36 km away
  25. 3.523 km WNW of Gelibolu, Turkey · 12909 days ago · 13 km deep · 96 km away
  26. 3.219 km SSW of Ke?an, Turkey · 12905 days ago · 10 km deep · 86 km away
  27. 2.624 km ESE of Kumba?, Turkey · 12905 days ago · 10 km deep · 41 km away
  28. 2.416 km SSW of Kumba?, Turkey · 12905 days ago · 10 km deep · 34 km away
  29. 3.826 km WNW of Gelibolu, Turkey · 12903 days ago · 8 km deep · 100 km away
  30. 3.019 km WNW of Mudanya, Turkey · 12895 days ago · 10 km deep · 96 km away
  31. 3.111 km SSW of Kumba?, Turkey · 12895 days ago · 10 km deep · 37 km away
  32. 3.34 km WNW of Manyas, Turkey · 12893 days ago · 13 km deep · 55 km away
  33. 2.723 km SSE of Marmara Ere?lisi, Turkey · 12892 days ago · 10 km deep · 58 km away
  34. 2.611 km N of Marmara, Turkey · 12889 days ago · 10 km deep · 24 km away
  35. 3.217 km NNE of Marmara, Turkey · 12889 days ago · 10 km deep · 29 km away

Before

  1. 2.70 km ENE of Erdek, Turkey · 12949 days ago · 10 km deep · 23 km away
  2. 2.920 km NW of Biga, Turkey · 12956 days ago · 10 km deep · 45 km away
  3. 2.79 km NNW of Marmara, Turkey · 12958 days ago · 10 km deep · 21 km away
  4. 2.8Western Turkey · 12959 days ago · 10 km deep · 36 km away
  5. 2.819 km SSW of Marmara Ere?lisi, Turkey · 12960 days ago · 10 km deep · 47 km away
  6. 2.717 km SSE of Marmara Ere?lisi, Turkey · 12962 days ago · 10 km deep · 55 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0004qmn. Read Fri, Oct 2, 2026, 10:47 PM UTC.