EveryQuake

Earthquakes in Kocaeli

6,930 earthquakes catalogued in and around Kocaeli between 1905 and 2026.

Last updated 14 October 2026 · merged from 5 catalogues
1.4
Latest earthquake · depth 8.9 km
11.10.2026 16:04 UTC · from centre 56 km
6,930
recorded earthquakes
M7.6
largest
1905–2026
record span
2.32
mean magnitude
2,951
epicentre inside the border

By year

Stacked by magnitude; one column per year.

050310071905: 2 (M5+)19051907: 1 (M4–5)1907: 1 (M5+)19151923: 2 (M5+)1925: 1 (M4–5)1925: 1 (M5+)19251926: 1 (M5+)1929: 1 (M5+)1932: 1 (M4–5)19351940: 1 (M4–5)1943: 1 (M4–5)1943: 1 (M5+)1944: 1 (M5+)19451948: 1 (M4–5)1948: 1 (M5+)1952: 1 (M4–5)1953: 1 (M5+)19551956: 2 (M4–5)1956: 1 (M5+)1957: 3 (M4–5)1957: 8 (M5+)1958: 1 (M4–5)1959: 1 (M4–5)1959: 1 (M5+)1961: 1 (M4–5)1963: 1 (M4–5)1963: 1 (M5+)1964: 2 (M4–5)1964: 1 (M5+)19651967: 39 (M4–5)1967: 4 (M5+)1968: 2 (M4–5)1969: 1 (M4–5)1971: 4 (M3–4)1972: 4 (M3–4)1972: 1 (M4–5)1973: 3 (M3–4)1973: 1 (M4–5)1974: 3 (M3–4)1974: 1 (M4–5)1975: 4 (M3–4)19751976: 10 (M3–4)1977: 12 (M3–4)1978: 13 (M3–4)1978: 1 (M4–5)1979: 14 (M3–4)1979: 1 (M4–5)1980: 11 (M3–4)1981: 12 (M3–4)1981: 2 (M4–5)1982: 6 (M3–4)1982: 3 (M4–5)1983: 8 (M3–4)1983: 1 (M5+)1984: 17 (M3–4)1984: 2 (M4–5)1985: 9 (M3–4)1985: 1 (M4–5)19851986: 12 (M3–4)1986: 1 (M4–5)1987: 23 (M3–4)1987: 1 (M4–5)1988: 26 (M3–4)1989: 10 (M3–4)1989: 1 (M4–5)1990: 29 (M<3)1990: 47 (M3–4)1990: 2 (M4–5)1991: 74 (M<3)1991: 28 (M3–4)1991: 1 (M4–5)1992: 5 (M<3)1992: 48 (M3–4)1993: 65 (M<3)1993: 20 (M3–4)1994: 177 (M<3)1994: 35 (M3–4)1994: 1 (M4–5)1995: 35 (M<3)1995: 11 (M3–4)19951996: 17 (M<3)1996: 22 (M3–4)1997: 18 (M<3)1997: 49 (M3–4)1997: 1 (M4–5)1998: 104 (M<3)1998: 29 (M3–4)1999: 378 (M<3)1999: 525 (M3–4)1999: 91 (M4–5)1999: 13 (M5+)2000: 56 (M<3)2000: 78 (M3–4)2000: 2 (M4–5)2000: 2 (M5+)2001: 51 (M<3)2001: 28 (M3–4)2001: 1 (M4–5)2002: 29 (M<3)2002: 18 (M3–4)2003: 39 (M<3)2003: 25 (M3–4)2004: 84 (M<3)2004: 23 (M3–4)2005: 101 (M<3)2005: 27 (M3–4)20052006: 68 (M<3)2006: 20 (M3–4)2006: 1 (M5+)2007: 63 (M<3)2007: 15 (M3–4)2008: 147 (M<3)2008: 30 (M3–4)2008: 2 (M4–5)2009: 175 (M<3)2009: 25 (M3–4)2010: 202 (M<3)2010: 21 (M3–4)2010: 1 (M4–5)2011: 219 (M<3)2011: 6 (M3–4)2011: 1 (M4–5)2012: 212 (M<3)2012: 3 (M3–4)2012: 1 (M4–5)2013: 230 (M<3)2013: 12 (M3–4)2013: 1 (M4–5)2014: 268 (M<3)2014: 4 (M3–4)2014: 2 (M4–5)2015: 234 (M<3)2015: 2 (M3–4)20152016: 290 (M<3)2016: 8 (M3–4)2016: 1 (M4–5)2017: 222 (M<3)2017: 1 (M3–4)2018: 190 (M<3)2018: 2 (M4–5)2019: 194 (M<3)2019: 5 (M3–4)2019: 2 (M4–5)2020: 103 (M<3)2020: 1 (M3–4)2021: 129 (M<3)2021: 3 (M3–4)2022: 141 (M<3)2022: 1 (M3–4)2022: 1 (M5+)2023: 259 (M<3)2023: 5 (M3–4)2023: 1 (M4–5)2023: 1 (M5+)2024: 144 (M<3)2024: 4 (M3–4)2024: 1 (M4–5)2025: 134 (M<3)2025: 5 (M3–4)2025: 2 (M4–5)2025: 1 (M5+)20252026: 415 (M<3)2026: 4 (M3–4)
M<3M3–4M4–5M5+

Read this chart carefully. Rising columns do not mean earthquakes are becoming more frequent. The monitoring network improved over time: the smallest detectable earthquake in Türkiye was about M5.0 in 1966 and is M1.5 today. Earlier years look quiet because small events were not heard, not because they did not happen.

Largest earthquakes

Inclusion rule: the radius widens with magnitude (15 km up to M4, 150 km at M7 and above). This is not a measure of felt shaking or intensity.

MagnitudeDateDepthDistance
7.617.08.1999 00:0116.3 km14 km
7.422.07.1967 16:5624.5 km74 km
7.226.05.1957 06:3325 km104 km
7.218.03.1953 19:0610 km203 km
7.212.11.1999 16:5714.9 km113 km
6.806.10.1964 14:3113.9 km155 km
6.220.06.1943 15:3235 km17 km
6.223.04.2025 09:4912.1 km138 km
6.123.11.2022 01:0817 km95 km
6.018.09.1963 16:5830 km63 km
6.012.11.1999 16:5713.2 km112 km
5.926.05.1957 09:3615 km88 km
5.816.12.1926 17:5415 km100 km
5.813.09.1999 11:5515.7 km21 km
5.713.11.1948 04:4415 km109 km

Latest earthquakes

MagnitudeDateDepthDistance
1.411.10.2026 16:048.9 km56 km
2.911.10.2026 15:147.2 km56 km
0.910.10.2026 22:266.5 km74 km
1.110.10.2026 21:363.6 km57 km
0.910.10.2026 21:057 km54 km
1.110.10.2026 20:037 km56 km
1.510.10.2026 19:467 km56 km
2.310.10.2026 19:4610.2 km57 km
3.510.10.2026 19:088 km56 km
1.209.10.2026 14:119.4 km72 km
1.107.10.2026 23:385.5 km74 km
2.307.10.2026 05:4611.3 km72 km
1.406.10.2026 23:359 km72 km
1.202.10.2026 14:4810 km60 km
1.329.09.2026 10:297 km65 km
1.329.09.2026 10:177 km52 km
1.427.09.2026 03:1212.2 km56 km
1.627.09.2026 02:587.1 km57 km
1.226.09.2026 06:482.6 km65 km
1.325.09.2026 21:326.4 km72 km
1.225.09.2026 07:420 km65 km
1.923.09.2026 15:107.9 km65 km
1.122.09.2026 07:547 km72 km
0.722.09.2026 07:495 km34 km
1.017.09.2026 10:1118.7 km51 km
0.617.09.2026 09:446.7 km46 km
1.016.09.2026 14:107 km48 km
1.116.09.2026 07:078.8 km48 km
1.215.09.2026 15:568.9 km58 km
1.014.09.2026 08:547 km53 km
1.311.09.2026 03:098 km66 km
2.010.09.2026 10:5310.7 km57 km
1.010.09.2026 08:430 km71 km
1.209.09.2026 08:230 km73 km
0.908.09.2026 09:437 km55 km
1.107.09.2026 10:067.2 km55 km
0.906.09.2026 18:087 km72 km
1.406.09.2026 15:2710.7 km61 km
1.606.09.2026 14:409.8 km72 km
1.006.09.2026 08:1613.1 km58 km
1.306.09.2026 00:077 km64 km
2.205.09.2026 17:517 km64 km
1.005.09.2026 06:447 km66 km
1.004.09.2026 13:257 km64 km
1.001.09.2026 22:519.4 km41 km
1.201.09.2026 09:2514.1 km57 km
1.728.08.2026 18:117.3 km68 km
0.628.08.2026 10:090 km70 km
1.326.08.2026 14:575 km50 km
1.026.08.2026 09:0117.9 km55 km
1.226.08.2026 05:547.4 km63 km
1.025.08.2026 09:097 km36 km
1.224.08.2026 19:4910.9 km65 km
1.424.08.2026 11:505 km63 km
1.224.08.2026 09:314.9 km62 km
1.124.08.2026 07:097 km39 km
0.924.08.2026 06:516.6 km63 km
1.824.08.2026 05:117 km67 km
1.623.08.2026 22:517.5 km64 km
1.623.08.2026 21:567 km65 km

Method and sources

What this page counts
An earthquake appears here when its epicentre is within a magnitude-dependent distance of this place's border: 15 km up to M4, 30 km to M5, 60 km to M6, 100 km to M7, and 150 km at M7 and above. The rule exists because a large earthquake concerns neighbouring provinces too — the 17 August 1999 epicentre was in the Gulf of İzmit, on no province's land at all.
Location precision
Epicentre uncertainty is typically 1–10 km, and larger for older records. That is why this site breaks data down to districts but not to neighbourhoods or villages — the data does not support that distinction.
Magnitude scales
The catalogues use more than twelve magnitude scales (Mw, ML, mb, Md…) and they are not equivalent. Values are shown on the scale the source reported; they are not converted.
Deduplication
The same earthquake is published by several catalogues. Records within 20 seconds and 100 km whose magnitudes differ by no more than 1.2 are treated as one event; the primary record is chosen by catalogue priority.
Updates
Recent earthquakes are fetched from four sources every five minutes. The historical archive is rebuilt infrequently.
Sources
USGS ComCat · ISC Bulletin · AFAD · Kandilli / KOERI · EMSC/CSEM
Reporting an error
If you spot a wrong record, write to us; we verify against the source and correct it.