EveryQuake

Earthquakes in Biobío

3,107 earthquakes catalogued in and around Biobío between 1906 and 2026. Recorded measurements; not a forecast.

Last updated 4 August 2026 · merged from 5 catalogues
3.4
Latest earthquake · depth 45.9 km
29.07.2026 09:32 UTC · from centre 114 km
3,107
recorded earthquakes
M9.6
largest
1906–2026
record span
3.97
mean magnitude
2,010
epicentre inside the border

By year

Stacked by magnitude; one column per year.

04148281906: 1 (M5+)19061907: 1 (M5+)1914: 1 (M5+)19161920: 3 (M5+)1922: 1 (M5+)1923: 1 (M5+)1926: 1 (M5+)19261928: 3 (M5+)1935: 1 (M5+)1936: 2 (M5+)19361937: 3 (M5+)1939: 1 (M5+)19461949: 1 (M5+)1951: 1 (M5+)1953: 1 (M5+)19561960: 23 (M5+)1961: 4 (M5+)1962: 2 (M5+)1963: 2 (M5+)1964: 7 (M4–5)1965: 1 (M3–4)1965: 11 (M4–5)1965: 2 (M5+)1966: 10 (M4–5)1966: 4 (M5+)19661967: 10 (M4–5)1967: 1 (M5+)1968: 1 (M4–5)1968: 1 (M5+)1969: 8 (M4–5)1969: 1 (M5+)1970: 5 (M4–5)1971: 2 (M4–5)1971: 4 (M5+)1972: 2 (M4–5)1972: 1 (M5+)1973: 5 (M4–5)1973: 2 (M5+)1974: 7 (M4–5)1974: 4 (M5+)1975: 22 (M4–5)1975: 6 (M5+)1976: 4 (M4–5)1976: 2 (M5+)19761977: 4 (M4–5)1978: 3 (M4–5)1978: 2 (M5+)1979: 4 (M4–5)1979: 4 (M5+)1980: 6 (M4–5)1980: 2 (M5+)1981: 5 (M4–5)1981: 3 (M5+)1982: 1 (M3–4)1982: 6 (M4–5)1983: 3 (M5+)1984: 3 (M4–5)1984: 1 (M5+)1985: 13 (M4–5)1985: 2 (M5+)1986: 4 (M4–5)1986: 2 (M5+)19861987: 2 (M3–4)1987: 5 (M4–5)1987: 3 (M5+)1988: 14 (M4–5)1988: 2 (M5+)1989: 6 (M4–5)1989: 1 (M5+)1990: 4 (M4–5)1990: 4 (M5+)1991: 10 (M4–5)1991: 2 (M5+)1992: 11 (M4–5)1993: 4 (M4–5)1993: 1 (M5+)1994: 8 (M4–5)1995: 3 (M3–4)1995: 15 (M4–5)1995: 3 (M5+)1996: 5 (M4–5)19961997: 1 (M3–4)1997: 6 (M4–5)1998: 1 (M<3)1998: 7 (M3–4)1998: 13 (M4–5)1998: 2 (M5+)1999: 10 (M3–4)1999: 19 (M4–5)1999: 3 (M5+)2000: 8 (M3–4)2000: 7 (M4–5)2001: 1 (M<3)2001: 17 (M3–4)2001: 14 (M4–5)2001: 1 (M5+)2002: 20 (M3–4)2002: 14 (M4–5)2003: 4 (M<3)2003: 24 (M3–4)2003: 4 (M4–5)2004: 5 (M<3)2004: 17 (M3–4)2004: 23 (M4–5)2004: 6 (M5+)2005: 3 (M<3)2005: 18 (M3–4)2005: 12 (M4–5)2005: 1 (M5+)2006: 1 (M<3)2006: 17 (M3–4)2006: 12 (M4–5)2006: 3 (M5+)20062007: 4 (M<3)2007: 13 (M3–4)2007: 6 (M4–5)2007: 1 (M5+)2008: 2 (M<3)2008: 12 (M3–4)2008: 9 (M4–5)2008: 1 (M5+)2009: 4 (M3–4)2009: 12 (M4–5)2009: 2 (M5+)2010: 1 (M<3)2010: 105 (M3–4)2010: 608 (M4–5)2010: 114 (M5+)2011: 15 (M3–4)2011: 112 (M4–5)2011: 27 (M5+)2012: 3 (M<3)2012: 28 (M3–4)2012: 32 (M4–5)2012: 9 (M5+)2013: 12 (M<3)2013: 44 (M3–4)2013: 17 (M4–5)2013: 3 (M5+)2014: 8 (M<3)2014: 27 (M3–4)2014: 18 (M4–5)2014: 1 (M5+)2015: 2 (M<3)2015: 37 (M3–4)2015: 46 (M4–5)2015: 10 (M5+)2016: 3 (M<3)2016: 37 (M3–4)2016: 36 (M4–5)2016: 1 (M5+)20162017: 32 (M3–4)2017: 26 (M4–5)2017: 3 (M5+)2018: 31 (M3–4)2018: 18 (M4–5)2018: 3 (M5+)2019: 1 (M<3)2019: 60 (M3–4)2019: 8 (M4–5)2019: 2 (M5+)2020: 48 (M<3)2020: 61 (M3–4)2020: 10 (M4–5)2020: 2 (M5+)2021: 43 (M<3)2021: 50 (M3–4)2021: 19 (M4–5)2021: 4 (M5+)2022: 75 (M<3)2022: 69 (M3–4)2022: 10 (M4–5)2022: 3 (M5+)2023: 57 (M<3)2023: 47 (M3–4)2023: 21 (M4–5)2023: 3 (M5+)2024: 45 (M<3)2024: 64 (M3–4)2024: 6 (M4–5)2024: 3 (M5+)2025: 51 (M<3)2025: 62 (M3–4)2025: 17 (M4–5)2025: 1 (M5+)2026: 35 (M<3)2026: 47 (M3–4)2026: 6 (M4–5)2026: 1 (M5+)2026
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
9.622.05.1960 19:1125 km121 km
8.827.02.2010 06:3422.9 km142 km
8.221.05.1960 10:0225 km98 km
7.922.05.1960 18:5625 km91 km
7.701.12.1928 04:0635 km258 km
7.725.01.1939 03:3235 km129 km
7.710.05.1975 14:2717.5 km95 km
7.514.02.1962 06:3630 km64 km
7.530.01.1914 03:3515 km273 km
7.506.05.1953 17:1666 km61 km
7.427.02.2010 08:0135 km258 km
7.313.06.1907 09:180 km234 km
7.310.12.1920 04:2525 km208 km
7.210.12.1920 04:2615 km187 km
7.102.01.2011 20:2024.4 km139 km

Latest earthquakes

MagnitudeDateDepthDistance
3.429.07.2026 09:3245.9 km114 km
2.625.07.2026 08:03107 km141 km
2.824.07.2026 22:10130.7 km97 km
3.522.07.2026 09:5638.2 km86 km
2.818.07.2026 10:3040.4 km65 km
2.915.07.2026 11:3418.2 km129 km
3.906.07.2026 12:5821.3 km122 km
4.506.07.2026 12:4310 km136 km
2.906.07.2026 07:0923.3 km120 km
3.506.07.2026 07:0317.1 km122 km
3.306.07.2026 04:10110.2 km78 km
2.603.07.2026 11:1244 km153 km
4.501.07.2026 19:5245.8 km100 km
3.401.07.2026 18:2787.4 km62 km
2.801.07.2026 11:3214.1 km137 km
2.729.06.2026 16:4447.5 km144 km
3.629.06.2026 04:1363.4 km116 km
2.522.06.2026 17:2668.2 km49 km
3.016.06.2026 11:37108.1 km120 km
3.410.06.2026 16:3175.8 km8 km
2.910.06.2026 10:5852.8 km122 km
3.009.06.2026 07:3472.1 km133 km
3.303.06.2026 15:0598.1 km101 km
3.129.05.2026 03:12102.7 km125 km
3.827.05.2026 02:4161 km92 km
3.223.05.2026 16:3630.9 km86 km
3.220.05.2026 10:52103.6 km73 km
2.820.05.2026 03:3586.7 km15 km
3.020.05.2026 01:1129.8 km139 km
2.619.05.2026 14:1831.1 km87 km
3.519.05.2026 02:0938.6 km94 km
3.515.05.2026 02:0461.4 km61 km
3.212.05.2026 21:4866.3 km32 km
2.512.05.2026 06:1214.2 km80 km
2.812.05.2026 05:4440.9 km57 km
3.610.05.2026 08:2635.9 km84 km
3.710.05.2026 08:0329 km73 km
3.510.05.2026 03:0437.9 km82 km
5.010.05.2026 02:3428 km67 km
2.907.05.2026 00:5237 km82 km
3.304.05.2026 20:5629.2 km135 km
2.804.05.2026 15:5797.7 km124 km
3.101.05.2026 21:5196.4 km86 km
2.627.04.2026 08:0758.9 km90 km
2.820.04.2026 22:4530.9 km116 km
2.820.04.2026 12:1570.1 km111 km
3.114.04.2026 22:06135.6 km88 km
3.006.04.2026 05:24130.7 km104 km
4.229.03.2026 17:5610 km185 km
3.627.03.2026 19:1835.5 km81 km
3.827.03.2026 18:5132.1 km85 km
2.527.03.2026 05:2552.4 km124 km
3.426.03.2026 04:2653.5 km73 km
3.523.03.2026 22:01127.4 km38 km
3.823.03.2026 04:4418 km61 km
2.622.03.2026 08:1966.5 km99 km
3.521.03.2026 09:1134 km81 km
4.112.03.2026 17:4129.9 km140 km
4.109.03.2026 15:3710 km131 km
2.809.03.2026 13:5935.2 km78 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.