M4.3 earthquake 10 km E of Hendek, Turkey

Magnitude

4.3 (mb, body-wave), light

Magnitude from

USGS National Earthquake Information Center

Local time

Mon, Dec 20, 1999, 5:27 AM GMT+2

UTC

1999-12-20 03:27:19 UTC

Depth

10.0 km (6.2 mi), shallow

Epicenter

40.785° N, 30.873° E

Region

Turkey

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

OPERATOR_ASSIGNED

• Hendek, TurkeyPopulation 35,257. Forecast11 kmE
• Düzce, TurkeyPopulation 194,097. Forecast25 kmWSW
• Istanbul, TurkeyPopulation 15,701,602. Forecast164 kmE

After

1. 3.66 km NNW of Karapürçek, TurkeyMon, Dec 20, 1:46 PM GMT+2 · 9785 days ago · 7 km deep · 33 km away
2. 2.97 km WNW of Akyaz?, TurkeyMon, Dec 20, 2:03 PM GMT+2 · 9785 days ago · 1 km deep · 29 km away
3. 3.69 km WSW of Düzce, TurkeyWed, Dec 29, 12:39 PM GMT+2 · 9776 days ago · 7 km deep · 15 km away
4. 3.68 km NNE of Mudurnu, TurkeySun, Jan 2, 2:29 AM GMT+2 · 9773 days ago · 10 km deep · 43 km away
5. 3.93 km SSW of Hendek, TurkeyTue, Jan 4, 6:26 PM GMT+2 · 9770 days ago · 16 km deep · 12 km away
6. 4.08 km SE of Düzce, TurkeyWed, Jan 5, 4:10 PM GMT+2 · 9769 days ago · 10 km deep · 31 km away
7. 3.216 km WSW of Bolu, TurkeySat, Jan 8, 1:06 PM GMT+2 · 9766 days ago · 9 km deep · 48 km away
8. 4.319 km ESE of Düzce, TurkeyThu, Jan 20, 12:35 PM GMT+2 · 9754 days ago · 10 km deep · 42 km away
9. 3.46 km NNW of Akyaz?, TurkeySun, Jan 23, 9:24 AM GMT+2 · 9751 days ago · 10 km deep · 23 km away
10. 3.72 km NNW of Kar??yaka, TurkeyWed, Feb 9, 6:41 PM GMT+2 · 9734 days ago · 10 km deep · 80 km away
11. 4.928 km SW of Devrek, TurkeyMon, Feb 14, 8:56 AM GMT+2 · 9729 days ago · 10 km deep · 79 km away
12. 3.816 km NW of Yeniça?a, TurkeyMon, Feb 14, 9:12 AM GMT+2 · 9729 days ago · 16 km deep · 85 km away
13. 3.219 km ESE of Alapl?, TurkeyThu, Feb 17, 10:57 AM GMT+2 · 9726 days ago · 5 km deep · 73 km away

Before

1. 2.912 km SSE of Düzce, TurkeySun, Dec 19, 2:32 PM GMT+2 · 9786 days ago · 0 km deep · 31 km away
2. 3.513 km ENE of Düzce, TurkeyFri, Dec 17, 2:12 PM GMT+2 · 9788 days ago · 18 km deep · 39 km away
3. 4.3Western TurkeyMon, Dec 13, 9:13 PM GMT+2 · 9792 days ago · 10 km deep · 11 km away
4. 3.27 km E of Köseköy, TurkeySun, Dec 12, 7:07 PM GMT+2 · 9793 days ago · 14 km deep · 66 km away
5. 3.46 km S of Düzce, TurkeySat, Dec 11, 7:15 PM GMT+2 · 9794 days ago · 4 km deep · 24 km away
6. 3.011 km SSE of Hendek, TurkeyFri, Dec 10, 1:47 PM GMT+2 · 9795 days ago · 13 km deep · 10 km away
7. 3.115 km WNW of Bolu, TurkeyMon, Nov 29, 5:03 PM GMT+2 · 9806 days ago · 5 km deep · 49 km away
8. 3.713 km NW of Bolu, TurkeyMon, Nov 29, 12:30 PM GMT+2 · 9806 days ago · 10 km deep · 54 km away
9. 2.97 km WSW of Hendek, TurkeySun, Nov 28, 10:54 PM GMT+2 · 9807 days ago · 11 km deep · 17 km away
10. 3.111 km N of Düzce, TurkeySun, Nov 28, 9:03 PM GMT+2 · 9807 days ago · 5 km deep · 31 km away
11. 3.34 km W of Hendek, TurkeySun, Nov 28, 6:22 PM GMT+2 · 9807 days ago · 5 km deep · 15 km away
12. 3.112 km NNE of Bolu, TurkeyFri, Nov 26, 1:26 PM GMT+2 · 9809 days ago · 9 km deep · 67 km away
13. 3.216 km SE of Kocaali, TurkeyFri, Nov 26, 1:24 PM GMT+2 · 9809 days ago · 7 km deep · 18 km away
14. 2.920 km E of Düzce, TurkeyFri, Nov 26, 11:22 AM GMT+2 · 9809 days ago · 2 km deep · 45 km away
15. 4.44 km WSW of Bolu, TurkeyMon, Nov 22, 12:27 AM GMT+2 · 9814 days ago · 10 km deep · 58 km away
16. 4.018 km SSE of Düzce, TurkeySun, Nov 21, 9:53 AM GMT+2 · 9814 days ago · 10 km deep · 31 km away
17. 4.25 km ESE of Hendek, TurkeySun, Nov 21, 6:31 AM GMT+2 · 9815 days ago · 10 km deep · 6 km away
18. 4.016 km NW of Bolu, TurkeySat, Nov 20, 10:44 AM GMT+2 · 9815 days ago · 10 km deep · 53 km away

From the USGS Earthquake Hazards Program and its partner networks, event usp0009k1m. Read Sun, Oct 4, 2026, 4:28 PM UTC.