M4.2 earthquake 5 km ESE of Hendek, Turkey

Magnitude

4.2 (mb, body-wave), light

Magnitude from

USGS National Earthquake Information Center

Local time

Sun, Nov 21, 1999, 6:31 AM GMT+2

UTC

1999-11-21 04:31:42 UTC

Depth

10.0 km (6.2 mi), shallow

Epicenter

40.783° N, 30.804° E

Region

Turkey

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

OPERATOR_ASSIGNED

• Hendek, TurkeyPopulation 35,257. Forecast5 kmESE
• Düzce, TurkeyPopulation 194,097. Forecast31 kmWSW
• Istanbul, TurkeyPopulation 15,701,602. Forecast158 kmE

After

1. 4.018 km SSE of Düzce, TurkeySun, Nov 21, 9:53 AM GMT+2 · 9813 days ago · 10 km deep · 36 km away
2. 4.44 km WSW of Bolu, TurkeyMon, Nov 22, 12:27 AM GMT+2 · 9812 days ago · 10 km deep · 64 km away
3. 2.920 km E of Düzce, TurkeyFri, Nov 26, 11:22 AM GMT+2 · 9808 days ago · 2 km deep · 51 km away
4. 3.216 km SE of Kocaali, TurkeyFri, Nov 26, 1:24 PM GMT+2 · 9808 days ago · 7 km deep · 21 km away
5. 3.112 km NNE of Bolu, TurkeyFri, Nov 26, 1:26 PM GMT+2 · 9808 days ago · 9 km deep · 73 km away
6. 3.34 km W of Hendek, TurkeySun, Nov 28, 6:22 PM GMT+2 · 9805 days ago · 5 km deep · 9 km away
7. 3.111 km N of Düzce, TurkeySun, Nov 28, 9:03 PM GMT+2 · 9805 days ago · 5 km deep · 36 km away
8. 2.97 km WSW of Hendek, TurkeySun, Nov 28, 10:54 PM GMT+2 · 9805 days ago · 11 km deep · 11 km away
9. 3.713 km NW of Bolu, TurkeyMon, Nov 29, 12:30 PM GMT+2 · 9805 days ago · 10 km deep · 60 km away
10. 3.115 km WNW of Bolu, TurkeyMon, Nov 29, 5:03 PM GMT+2 · 9804 days ago · 5 km deep · 55 km away
11. 3.011 km SSE of Hendek, TurkeyFri, Dec 10, 1:47 PM GMT+2 · 9794 days ago · 13 km deep · 8 km away
12. 3.46 km S of Düzce, TurkeySat, Dec 11, 7:15 PM GMT+2 · 9792 days ago · 4 km deep · 29 km away
13. 3.27 km E of Köseköy, TurkeySun, Dec 12, 7:07 PM GMT+2 · 9791 days ago · 14 km deep · 60 km away
14. 4.3Western TurkeyMon, Dec 13, 9:13 PM GMT+2 · 9790 days ago · 10 km deep · 7 km away
15. 3.513 km ENE of Düzce, TurkeyFri, Dec 17, 2:12 PM GMT+2 · 9786 days ago · 18 km deep · 44 km away
16. 2.912 km SSE of Düzce, TurkeySun, Dec 19, 2:32 PM GMT+2 · 9784 days ago · 0 km deep · 37 km away
17. 4.310 km E of Hendek, TurkeyMon, Dec 20, 5:27 AM GMT+2 · 9784 days ago · 10 km deep · 6 km away
18. 3.66 km NNW of Karapürçek, TurkeyMon, Dec 20, 1:46 PM GMT+2 · 9784 days ago · 7 km deep · 28 km away
19. 2.97 km WNW of Akyaz?, TurkeyMon, Dec 20, 2:03 PM GMT+2 · 9783 days ago · 1 km deep · 23 km away
20. 3.69 km WSW of Düzce, TurkeyWed, Dec 29, 12:39 PM GMT+2 · 9775 days ago · 7 km deep · 21 km away
21. 3.68 km NNE of Mudurnu, TurkeySun, Jan 2, 2:29 AM GMT+2 · 9771 days ago · 10 km deep · 47 km away
22. 3.93 km SSW of Hendek, TurkeyTue, Jan 4, 6:26 PM GMT+2 · 9768 days ago · 16 km deep · 6 km away
23. 4.08 km SE of Düzce, TurkeyWed, Jan 5, 4:10 PM GMT+2 · 9767 days ago · 10 km deep · 36 km away
24. 3.216 km WSW of Bolu, TurkeySat, Jan 8, 1:06 PM GMT+2 · 9765 days ago · 9 km deep · 53 km away

Before

1. 4.016 km NW of Bolu, TurkeySat, Nov 20, 10:44 AM GMT+2 · 9814 days ago · 10 km deep · 58 km away
2. 4.816 km WSW of Düzce, TurkeyFri, Nov 19, 9:59 PM GMT+2 · 9814 days ago · 7 km deep · 14 km away
3. 4.11 km WSW of Hendek, TurkeyFri, Nov 19, 4:01 PM GMT+2 · 9814 days ago · 10 km deep · 6 km away
4. 4.19 km SW of Düzce, TurkeyFri, Nov 19, 12:27 PM GMT+2 · 9815 days ago · 10 km deep · 22 km away
5. 3.821 km SE of Düzce, TurkeyThu, Nov 18, 8:19 PM GMT+2 · 9815 days ago · 10 km deep · 44 km away
6. 4.814 km NW of Bolu, TurkeyWed, Nov 17, 10:15 AM GMT+2 · 9817 days ago · 9 km deep · 56 km away
7. 4.2Western TurkeyWed, Nov 17, 5:36 AM GMT+2 · 9817 days ago · 10 km deep · 52 km away
8. 3.79 km NE of Düzce, TurkeyWed, Nov 17, 2:15 AM GMT+2 · 9817 days ago · 10 km deep · 39 km away
9. 5.12 km S of Bolu, TurkeyTue, Nov 16, 7:51 PM GMT+2 · 9817 days ago · 10 km deep · 68 km away
10. 4.0Western TurkeyMon, Nov 15, 6:26 PM GMT+2 · 9818 days ago · 10 km deep · 4 km away
11. 3.314 km NNE of Mudurnu, TurkeyMon, Nov 15, 1:36 PM GMT+2 · 9819 days ago · 0 km deep · 42 km away
12. 4.13 km W of Bolu, TurkeyMon, Nov 15, 12:55 AM GMT+2 · 9819 days ago · 10 km deep · 64 km away
13. 3.317 km SE of Düzce, TurkeySun, Nov 14, 6:00 AM GMT+2 · 9820 days ago · 8 km deep · 43 km away
14. 2.913 km ESE of Düzce, TurkeySun, Nov 14, 5:23 AM GMT+2 · 9820 days ago · 0 km deep · 42 km away
15. 3.65 km NW of Düzce, TurkeySun, Nov 14, 2:13 AM GMT+2 · 9820 days ago · 10 km deep · 28 km away
16. 3.217 km WNW of Bolu, TurkeySun, Nov 14, 12:32 AM GMT+2 · 9820 days ago · 2 km deep · 52 km away
17. 3.218 km E of Düzce, TurkeySun, Nov 14, 12:27 AM GMT+2 · 9820 days ago · 4 km deep · 48 km away
18. 4.015 km NW of Bolu, TurkeySat, Nov 13, 8:43 PM GMT+2 · 9820 days ago · 0 km deep · 59 km away
19. 3.417 km E of Düzce, TurkeySat, Nov 13, 5:35 PM GMT+2 · 9820 days ago · 0 km deep · 48 km away
20. 4.07 km WNW of Bolu, TurkeySat, Nov 13, 12:10 PM GMT+2 · 9821 days ago · 10 km deep · 61 km away

From the USGS Earthquake Hazards Program and its partner networks, event usp0009hxd. Read Fri, Oct 2, 2026, 11:23 PM UTC.