M3.0 earthquake 18 km SE of Biga, Turkey

Magnitude

3.0 (Md, duration), minor

Magnitude from

USGS National Earthquake Information Center

Local time

Fri, Jun 21, 1991, 12:10 AM GMT+3

UTC

1991-06-20 21:10:15 UTC

Depth

10.0 km (6.2 mi), shallow

Epicenter

40.099° N, 27.379° E

Region

Turkey

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

OPERATOR_ASSIGNED

• Biga, TurkeyPopulation 61,066. Forecast18 kmSE
• Bandırma, TurkeyPopulation 107,631. Forecast58 kmWSW
• Bursa, TurkeyPopulation 3,101,833. Forecast143 kmW

After

1. 2.727 km S of Marmara Ere?lisi, TurkeyTue, Jun 25, 9:03 PM GMT+3 · 12883 days ago · 10 km deep · 83 km away
2. 2.732 km SSE of Marmara Ere?lisi, TurkeyTue, Jun 25, 9:33 PM GMT+3 · 12883 days ago · 10 km deep · 91 km away
3. 4.28 km SW of Bal?kesir, TurkeyWed, Jun 26, 2:00 PM GMT+3 · 12883 days ago · 11 km deep · 67 km away
4. 2.824 km NNW of Eceabat, TurkeyThu, Jun 27, 11:52 PM GMT+3 · 12881 days ago · 10 km deep · 98 km away
5. 2.510 km N of Gönen, TurkeySat, Jun 29, 7:53 PM GMT+3 · 12879 days ago · 10 km deep · 24 km away
6. 2.911 km NNE of Soma, TurkeySun, Jun 30, 3:23 AM GMT+3 · 12879 days ago · 10 km deep · 95 km away
7. 3.115 km ESE of Sava?tepe, TurkeySun, Jun 30, 5:07 AM GMT+3 · 12879 days ago · 10 km deep · 93 km away
8. 2.49 km SSW of Erdek, TurkeyMon, Jul 1, 9:36 PM GMT+3 · 12877 days ago · 10 km deep · 41 km away
9. 3.516 km SE of Sava?tepe, TurkeyMon, Jul 8, 12:18 AM GMT+3 · 12871 days ago · 10 km deep · 97 km away
10. 2.918 km NE of Hamdibey, TurkeyMon, Jul 8, 2:53 AM GMT+3 · 12871 days ago · 10 km deep · 16 km away
11. 3.43 km SSE of Ayvac?k, TurkeyFri, Jul 12, 8:24 AM GMT+3 · 12867 days ago · 10 km deep · 100 km away
12. 2.820 km NNW of Biga, TurkeySat, Jul 13, 1:12 AM GMT+3 · 12866 days ago · 10 km deep · 38 km away
13. 3.29 km NW of Bal?kesir, TurkeyTue, Jul 16, 4:57 AM GMT+3 · 12863 days ago · 10 km deep · 57 km away
14. 3.322 km WNW of Gelibolu, TurkeyFri, Jul 19, 3:01 PM GMT+3 · 12860 days ago · 10 km deep · 92 km away
15. 3.222 km WNW of Gelibolu, TurkeyFri, Jul 19, 3:09 PM GMT+3 · 12860 days ago · 10 km deep · 91 km away
16. 3.114 km S of Tatkavakl?, TurkeySat, Jul 20, 4:34 PM GMT+3 · 12858 days ago · 5 km deep · 84 km away
17. 4.019 km ESE of Sava?tepe, TurkeyMon, Jul 22, 3:49 AM GMT+3 · 12857 days ago · 9 km deep · 95 km away
18. 3.120 km WSW of Bigadiç, TurkeyMon, Jul 22, 3:54 AM GMT+3 · 12857 days ago · 10 km deep · 96 km away
19. 2.815 km SE of Sava?tepe, TurkeyMon, Jul 22, 4:00 AM GMT+3 · 12857 days ago · 10 km deep · 96 km away
20. 2.515 km SE of Sava?tepe, TurkeyMon, Jul 22, 5:12 AM GMT+3 · 12857 days ago · 10 km deep · 96 km away
21. 3.113 km ESE of Sava?tepe, TurkeyMon, Jul 22, 5:13 AM GMT+3 · 12857 days ago · 10 km deep · 93 km away
22. 2.917 km SE of Sava?tepe, TurkeyMon, Jul 22, 8:00 AM GMT+3 · 12857 days ago · 10 km deep · 98 km away
23. 2.621 km ESE of Sava?tepe, TurkeyMon, Jul 22, 10:51 PM GMT+3 · 12856 days ago · 10 km deep · 99 km away
24. 2.67 km W of Sava?tepe, TurkeyTue, Jul 23, 7:49 PM GMT+3 · 12855 days ago · 10 km deep · 80 km away
25. 3.221 km SSE of Biga, TurkeyThu, Jul 25, 12:11 PM GMT+3 · 12854 days ago · 10 km deep · 4 km away
26. 2.518 km E of Kumba?, TurkeyFri, Jul 26, 2:36 AM GMT+3 · 12853 days ago · 10 km deep · 87 km away
27. 3.218 km ESE of Sava?tepe, TurkeyWed, Jul 31, 9:05 PM GMT+3 · 12847 days ago · 10 km deep · 97 km away

Before

1. 3.217 km NNE of Marmara, TurkeyThu, Jun 20, 11:01 AM GMT+3 · 12889 days ago · 10 km deep · 73 km away
2. 2.611 km N of Marmara, TurkeyWed, Jun 19, 6:27 PM GMT+3 · 12889 days ago · 10 km deep · 67 km away
3. 2.723 km SSE of Marmara Ere?lisi, TurkeyMon, Jun 17, 10:46 AM GMT+3 · 12892 days ago · 10 km deep · 98 km away
4. 3.34 km WNW of Manyas, TurkeySun, Jun 16, 4:11 AM GMT+3 · 12893 days ago · 13 km deep · 46 km away
5. 3.111 km SSW of Kumba?, TurkeyThu, Jun 13, 5:58 PM GMT+3 · 12895 days ago · 10 km deep · 77 km away
6. 3.18 km W of Bigadiç, TurkeyThu, Jun 13, 7:10 AM GMT+3 · 12896 days ago · 10 km deep · 96 km away
7. 3.826 km WNW of Gelibolu, TurkeyThu, Jun 6, 12:38 AM GMT+3 · 12903 days ago · 8 km deep · 95 km away
8. 3.120 km W of Bigadiç, TurkeyWed, Jun 5, 5:21 AM GMT+3 · 12904 days ago · 10 km deep · 90 km away
9. 2.416 km SSW of Kumba?, TurkeyTue, Jun 4, 12:12 PM GMT+3 · 12905 days ago · 10 km deep · 72 km away
10. 2.624 km ESE of Kumba?, TurkeyTue, Jun 4, 1:45 AM GMT+3 · 12905 days ago · 10 km deep · 85 km away
11. 3.219 km SSW of Ke?an, TurkeyMon, Jun 3, 2:26 PM GMT+3 · 12906 days ago · 10 km deep · 95 km away
12. 3.523 km WNW of Gelibolu, TurkeyFri, May 31, 6:15 AM GMT+3 · 12909 days ago · 13 km deep · 93 km away
13. 2.69 km N of Band?rma, TurkeyThu, May 30, 6:40 PM GMT+3 · 12909 days ago · 10 km deep · 63 km away
14. 2.926 km WNW of Gelibolu, TurkeyWed, May 29, 4:35 PM GMT+3 · 12910 days ago · 10 km deep · 95 km away
15. 2.825 km WNW of Gelibolu, TurkeyWed, May 29, 1:08 AM GMT+3 · 12911 days ago · 10 km deep · 95 km away
16. 2.925 km WNW of Gelibolu, TurkeyTue, May 28, 10:46 PM GMT+3 · 12911 days ago · 10 km deep · 95 km away
17. 3.027 km WNW of Gelibolu, TurkeyTue, May 28, 9:37 PM GMT+3 · 12911 days ago · 10 km deep · 97 km away
18. 4.024 km WNW of Gelibolu, TurkeyTue, May 28, 9:26 PM GMT+3 · 12911 days ago · 27 km deep · 94 km away
19. 3.225 km WNW of Gelibolu, TurkeyTue, May 28, 8:10 PM GMT+3 · 12911 days ago · 10 km deep · 95 km away
20. 3.226 km WNW of Gelibolu, TurkeyTue, May 28, 3:21 AM GMT+3 · 12912 days ago · 10 km deep · 96 km away

From the USGS Earthquake Hazards Program and its partner networks, event usp0004t7g. Read Sat, Oct 3, 2026, 12:17 AM UTC.