M3.9 earthquake 8 km SSE of Küplü, Turkey

Magnitude

3.9 (mb, body-wave), minor

Magnitude from

USGS National Earthquake Information Center

Local time

Sun, Sep 26, 1999, 2:12 PM GMT+3

UTC

1999-09-26 11:12:53 UTC

Depth

10.0 km (6.2 mi), shallow

Epicenter

40.033° N, 30.055° E

Region

Turkey

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

OPERATOR_ASSIGNED

• Bilecik, TurkeyPopulation 74,457. Forecast14 kmSSE
• İnegol, TurkeyPopulation 133,959. Forecast46 kmE
• Bursa, TurkeyPopulation 3,101,833. Forecast87 kmESE

After

1. 2.72 km WSW of Umurbey, TurkeySun, Sep 26, 5:03 PM GMT+3 · 9869 days ago · 10 km deep · 86 km away
2. 3.34 km NNW of Hal?dere, TurkeyMon, Sep 27, 2:44 AM GMT+3 · 9869 days ago · 6 km deep · 84 km away
3. 2.93 km WNW of Köseköy, TurkeyMon, Sep 27, 7:41 AM GMT+3 · 9868 days ago · 5 km deep · 80 km away
4. 5.28 km NNW of Ta?köprü, TurkeyWed, Sep 29, 3:13 AM GMT+3 · 9867 days ago · 10 km deep · 99 km away
5. 2.85 km WNW of Akyaz?, TurkeySun, Oct 3, 1:14 AM GMT+3 · 9863 days ago · 13 km deep · 87 km away
6. 2.86 km WSW of Hendek, TurkeySun, Oct 3, 2:02 AM GMT+3 · 9863 days ago · 9 km deep · 98 km away
7. 2.72 km NE of Körfez, TurkeySun, Oct 3, 3:35 AM GMT+3 · 9863 days ago · 6 km deep · 86 km away
8. 2.71 km N of Kullar, TurkeySun, Oct 3, 6:58 PM GMT+3 · 9862 days ago · 15 km deep · 78 km away
9. 3.12 km WNW of ?zmit, TurkeySun, Oct 3, 7:19 PM GMT+3 · 9862 days ago · 13 km deep · 83 km away
10. 3.11 km E of Yuvac?k, TurkeySun, Oct 3, 9:17 PM GMT+3 · 9862 days ago · 10 km deep · 73 km away
11. 3.65 km S of Adapazar?, TurkeyThu, Oct 14, 5:20 PM GMT+3 · 9851 days ago · 0 km deep · 83 km away
12. 3.314 km NNW of Sapanca, TurkeySun, Oct 17, 1:39 PM GMT+3 · 9848 days ago · 10 km deep · 87 km away
13. 2.86 km NE of Akyaz?, TurkeyTue, Oct 19, 5:19 PM GMT+3 · 9846 days ago · 5 km deep · 94 km away
14. 2.52 km NE of Umurbey, TurkeySat, Oct 23, 1:02 AM GMT+3 · 9843 days ago · 18 km deep · 85 km away
15. 3.619 km S of Alpu, TurkeyTue, Oct 26, 4:03 PM GMT+3 · 9839 days ago · 32 km deep · 89 km away
16. 3.07 km NW of Orhangazi, TurkeyWed, Oct 27, 8:32 AM GMT+3 · 9838 days ago · 6 km deep · 89 km away
17. 2.91 km E of Orhangazi, TurkeyFri, Oct 29, 1:03 PM GMT+3 · 9836 days ago · 15 km deep · 79 km away
18. 3.013 km SW of Eski?ehir, TurkeyFri, Oct 29, 1:07 PM GMT+3 · 9836 days ago · 0 km deep · 49 km away
19. 3.04 km NNW of Yenice, TurkeyFri, Oct 29, 4:31 PM GMT+3 · 9836 days ago · 8 km deep · 57 km away
20. 2.68 km E of Akyaz?, TurkeySun, Oct 31, 1:11 AM GMT+2 · 9835 days ago · 16 km deep · 91 km away
21. 2.75 km NW of Orhangazi, TurkeyMon, Nov 1, 12:14 AM GMT+2 · 9834 days ago · 11 km deep · 87 km away
22. 3.86 km NNW of Sapanca, TurkeySun, Nov 7, 1:15 PM GMT+2 · 9827 days ago · 10 km deep · 80 km away
23. 5.08 km E of Akyaz?, TurkeySun, Nov 7, 6:54 PM GMT+2 · 9827 days ago · 10 km deep · 93 km away
24. 4.26 km S of Hendek, TurkeySun, Nov 7, 7:06 PM GMT+2 · 9827 days ago · 10 km deep · 98 km away
25. 5.75 km N of Sapanca, TurkeyThu, Nov 11, 4:41 PM GMT+2 · 9823 days ago · 22 km deep · 81 km away
26. 3.315 km NNW of Sapanca, TurkeyThu, Nov 11, 4:49 PM GMT+2 · 9823 days ago · 9 km deep · 89 km away
27. 4.13 km E of Adapazar?, TurkeyThu, Nov 11, 4:55 PM GMT+2 · 9823 days ago · 10 km deep · 90 km away
28. 3.43 km SE of Koruköy, TurkeySun, Nov 14, 7:17 AM GMT+2 · 9820 days ago · 17 km deep · 99 km away

Before

1. 3.21 km SSE of Karapürçek, TurkeySat, Sep 25, 10:04 AM GMT+3 · 9870 days ago · 5 km deep · 78 km away
2. 3.89 km WNW of Adapazar?, TurkeyFri, Sep 24, 4:44 PM GMT+3 · 9871 days ago · 10 km deep · 88 km away
3. 2.63 km NE of Körfez, TurkeyThu, Sep 23, 10:19 AM GMT+3 · 9872 days ago · 13 km deep · 86 km away
4. 3.31 km S of Derince, TurkeyThu, Sep 23, 9:24 AM GMT+3 · 9872 days ago · 8 km deep · 81 km away
5. 3.44 km NW of Karapürçek, TurkeyMon, Sep 20, 3:07 AM GMT+3 · 9876 days ago · 5 km deep · 81 km away
6. 3.23 km WNW of Karapürçek, TurkeySun, Sep 19, 11:30 PM GMT+3 · 9876 days ago · 4 km deep · 78 km away
7. 4.31 km WSW of Karapürçek, TurkeySun, Sep 19, 11:26 PM GMT+3 · 9876 days ago · 10 km deep · 78 km away
8. 2.810 km W of Sö?ütlü, TurkeySun, Sep 19, 8:59 PM GMT+3 · 9876 days ago · 13 km deep · 99 km away
9. 3.02 km SSE of Köseköy, TurkeySun, Sep 19, 6:42 PM GMT+3 · 9876 days ago · 17 km deep · 76 km away
10. 2.82 km N of Yuvac?k, TurkeySun, Sep 19, 4:13 AM GMT+3 · 9877 days ago · 6 km deep · 75 km away
11. 2.81 km NW of ?zmit, TurkeySun, Sep 19, 1:13 AM GMT+3 · 9877 days ago · 9 km deep · 84 km away
12. 2.98 km W of Adapazar?, TurkeySat, Sep 18, 8:52 PM GMT+3 · 9877 days ago · 13 km deep · 86 km away
13. 4.55 km SSE of Yalova, TurkeySat, Sep 18, 3:48 AM GMT+3 · 9878 days ago · 10 km deep · 91 km away
14. 4.39 km WNW of Sapanca, TurkeyFri, Sep 17, 10:50 PM GMT+3 · 9878 days ago · 10 km deep · 76 km away
15. 2.89 km N of Akyaz?, TurkeyFri, Sep 17, 3:47 PM GMT+3 · 9878 days ago · 5 km deep · 95 km away
16. 3.54 km SE of Pamukova, TurkeyThu, Sep 16, 8:58 PM GMT+3 · 9879 days ago · 7 km deep · 52 km away
17. 2.50 km S of ?zmit, TurkeyThu, Sep 16, 4:10 PM GMT+3 · 9879 days ago · 14 km deep · 81 km away
18. 2.81 km N of Yuvac?k, TurkeyThu, Sep 16, 8:50 AM GMT+3 · 9879 days ago · 13 km deep · 75 km away
19. 3.213 km ESE of Akyaz?, TurkeyWed, Sep 15, 12:33 PM GMT+3 · 9880 days ago · 10 km deep · 93 km away
20. 2.96 km SSE of Sapanca, TurkeyWed, Sep 15, 12:02 PM GMT+3 · 9880 days ago · 7 km deep · 69 km away

From the USGS Earthquake Hazards Program and its partner networks, event usp0009f20. Read Sat, Oct 3, 2026, 3:10 PM UTC.