M4.0 earthquake 8 km SW of Foça, Turkey

Magnitude

4.0 (Md, duration), light

Magnitude from

USGS National Earthquake Information Center

Local time

Sun, Jul 28, 1991, 12:02 PM GMT+3

UTC

1991-07-28 09:02:08 UTC

Depth

10.0 km (6.2 mi), shallow

Epicenter

38.619° N, 26.679° E

Region

Turkey

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

OPERATOR_ASSIGNED

• Foça, TurkeyPopulation 28,594. Forecast9 kmSW
• Çiğli, TurkeyPopulation 214,065. Forecast37 kmWNW
• İzmir, TurkeyPopulation 2,938,292. Forecast46 kmWNW

After

1. 3.47 km SSW of Foça, TurkeySun, Jul 28, 2:32 PM GMT+3 · 12852 days ago · 10 km deep · 4 km away
2. 3.413 km SSE of Karaburun, TurkeySun, Jul 28, 3:09 PM GMT+3 · 12852 days ago · 10 km deep · 15 km away
3. 2.87 km SW of Soma, TurkeyWed, Jul 31, 2:43 PM GMT+3 · 12849 days ago · 10 km deep · 95 km away
4. 3.412 km SSE of Karaburun, TurkeyWed, Jul 31, 9:41 PM GMT+3 · 12849 days ago · 10 km deep · 15 km away
5. 3.42 km W of Foça, TurkeyWed, Jul 31, 11:01 PM GMT+3 · 12849 days ago · 10 km deep · 7 km away
6. 3.127 km N of Psará, GreeceSat, Aug 31, 5:46 PM GMT+3 · 12818 days ago · 10 km deep · 96 km away
7. 3.57 km SSW of Urla, TurkeySat, Sep 14, 9:58 PM GMT+3 · 12804 days ago · 10 km deep · 40 km away

Before

1. 3.311 km WNW of Zeytinliova, TurkeyMon, Jul 22, 9:19 AM GMT+3 · 12859 days ago · 10 km deep · 89 km away
2. 3.37 km SW of Foça, TurkeyTue, Jul 16, 9:01 AM GMT+3 · 12865 days ago · 10 km deep · 3 km away
3. 2.911 km ENE of Saruhanl?, TurkeyMon, Jul 15, 7:34 PM GMT+3 · 12865 days ago · 10 km deep · 90 km away
4. 2.88 km ENE of Zeytinda?, TurkeyMon, Jul 15, 5:57 AM GMT+3 · 12866 days ago · 10 km deep · 58 km away
5. 2.95 km E of Zeytinda?, TurkeyMon, Jul 15, 5:41 AM GMT+3 · 12866 days ago · 10 km deep · 55 km away
6. 2.75 km S of Soma, TurkeySun, Jul 14, 1:47 PM GMT+3 · 12866 days ago · 10 km deep · 100 km away
7. 2.85 km WNW of K?rka?aç, TurkeySat, Jul 13, 3:05 PM GMT+3 · 12867 days ago · 10 km deep · 99 km away
8. 2.75 km WNW of K?rka?aç, TurkeySat, Jul 13, 12:10 PM GMT+3 · 12868 days ago · 10 km deep · 98 km away
9. 2.55 km W of K?rka?aç, TurkeyFri, Jul 12, 4:06 PM GMT+3 · 12868 days ago · 10 km deep · 97 km away
10. 3.617 km ESE of Alaçat?, TurkeyTue, Jul 9, 1:18 AM GMT+3 · 12872 days ago · 14 km deep · 43 km away
11. 3.47 km WNW of ?zmir, TurkeySat, Jul 6, 12:08 AM GMT+3 · 12875 days ago · 10 km deep · 39 km away
12. 3.13 km WNW of Yeni?akran, TurkeyThu, Jul 4, 11:19 PM GMT+3 · 12876 days ago · 10 km deep · 43 km away
13. 3.112 km NE of Bergama, TurkeyWed, Jul 3, 4:41 PM GMT+3 · 12877 days ago · 10 km deep · 83 km away
14. 3.75 km SW of Eresós, GreeceSun, Jun 30, 4:19 PM GMT+3 · 12880 days ago · 19 km deep · 89 km away

From the USGS Earthquake Hazards Program and its partner networks, event usp0004uqg. Read Sun, Oct 4, 2026, 9:05 PM UTC.