EveryQuake

Earthquakes in Chaco

204 earthquakes catalogued in and around Chaco between 1912 and 2026. Recorded measurements; not a forecast.

Last updated 4 August 2026 · merged from 5 catalogues
4.0
Latest earthquake · depth 536 km
29.07.2026 03:39 UTC · from centre 271 km
204
recorded earthquakes
M7.5
largest
1912–2026
record span
5.02
mean magnitude
116
epicentre inside the border

By year

Stacked by magnitude; one column per year.

0491912: 1 (M5+)19121916: 1 (M5+)19211926: 1 (M5+)1928: 1 (M5+)19301934: 1 (M5+)1939: 1 (M5+)19391940: 1 (M5+)1942: 1 (M5+)1947: 1 (M5+)1948: 1 (M5+)19481950: 1 (M5+)19571962: 2 (M5+)1964: 1 (M4–5)1964: 1 (M5+)1965: 1 (M4–5)1965: 1 (M5+)1966: 1 (M5+)19661967: 1 (M4–5)1967: 2 (M5+)1968: 1 (M4–5)1968: 1 (M5+)1969: 2 (M4–5)1969: 1 (M5+)1971: 2 (M4–5)1972: 1 (M4–5)1973: 4 (M4–5)1973: 1 (M5+)1974: 1 (M3–4)19751976: 1 (M4–5)1977: 1 (M4–5)1977: 3 (M5+)1978: 1 (M4–5)1979: 1 (M5+)1980: 2 (M4–5)1980: 1 (M5+)1981: 1 (M5+)1982: 1 (M5+)1983: 1 (M4–5)1983: 6 (M5+)1984: 2 (M4–5)19841985: 2 (M5+)1986: 1 (M4–5)1986: 1 (M5+)1987: 3 (M4–5)1987: 1 (M5+)1988: 1 (M4–5)1988: 1 (M5+)1990: 2 (M4–5)1990: 1 (M5+)1991: 2 (M4–5)1991: 3 (M5+)1992: 1 (M4–5)19931994: 1 (M4–5)1994: 4 (M5+)1995: 1 (M5+)1996: 1 (M3–4)1998: 1 (M4–5)1998: 1 (M5+)1999: 3 (M4–5)2000: 1 (M3–4)2000: 1 (M4–5)2000: 2 (M5+)2001: 1 (M3–4)2001: 1 (M4–5)2002: 2 (M4–5)20022003: 1 (M<3)2003: 2 (M4–5)2003: 1 (M5+)2004: 1 (M<3)2004: 1 (M3–4)2004: 1 (M4–5)2004: 4 (M5+)2005: 1 (M4–5)2005: 3 (M5+)2006: 1 (M<3)2006: 1 (M4–5)2006: 2 (M5+)2007: 1 (M3–4)2007: 3 (M4–5)2008: 4 (M4–5)2008: 1 (M5+)2009: 1 (M4–5)2009: 1 (M5+)2010: 1 (M4–5)2010: 1 (M5+)2011: 2 (M4–5)2011: 6 (M5+)20112012: 2 (M4–5)2012: 3 (M5+)2013: 3 (M4–5)2013: 1 (M5+)2014: 3 (M4–5)2014: 1 (M5+)2015: 3 (M4–5)2016: 5 (M4–5)2016: 1 (M5+)2017: 1 (M4–5)2018: 1 (M3–4)2018: 2 (M4–5)2018: 4 (M5+)2019: 1 (M4–5)2019: 3 (M5+)2020: 1 (M4–5)2020: 2 (M5+)20202021: 1 (M3–4)2021: 3 (M4–5)2021: 3 (M5+)2022: 2 (M3–4)2022: 2 (M4–5)2022: 1 (M5+)2023: 4 (M4–5)2023: 5 (M5+)2024: 2 (M4–5)2025: 1 (M3–4)2025: 1 (M4–5)2025: 4 (M5+)2026: 2 (M3–4)2026: 1 (M4–5)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
7.507.12.1912 22:46620 km365 km
7.521.06.1916 21:32600 km345 km
7.223.06.1991 21:22563.4 km273 km
7.208.12.1962 21:27588.7 km235 km
7.114.08.1950 22:51610 km254 km
7.125.08.1948 06:0930 km397 km
7.001.01.2011 09:56584.3 km252 km
6.923.04.2000 09:27612.5 km313 km
6.921.12.1983 12:05603.5 km316 km
6.910.05.1994 06:36603.4 km351 km
6.929.04.1994 07:11569.4 km334 km
6.821.03.2005 12:23578.2 km284 km
6.813.11.2006 01:26568.1 km250 km
6.722.10.1977 17:57617.8 km302 km
6.720.01.2023 22:09598.1 km240 km

Latest earthquakes

MagnitudeDateDepthDistance
4.029.07.2026 03:39536 km271 km
3.824.06.2026 08:57583.2 km260 km
3.606.01.2026 09:53558.3 km274 km
4.427.12.2025 10:40650 km97 km
5.627.12.2025 10:40586.2 km334 km
3.311.11.2025 15:00566.9 km290 km
5.802.10.2025 21:37559.2 km275 km
5.209.07.2025 19:11575.2 km274 km
5.003.07.2025 06:13552.4 km268 km
4.112.09.2024 15:35575.2 km274 km
5.025.03.2024 16:14571.9 km262 km
4.106.12.2023 11:35557 km283 km
4.224.11.2023 15:29561 km275 km
4.111.11.2023 09:25562 km296 km
4.431.10.2023 12:20556.1 km278 km
6.123.08.2023 14:22566.4 km268 km
6.205.08.2023 07:20589.9 km335 km
6.324.01.2023 18:36591.4 km239 km
6.720.01.2023 22:09598.1 km240 km
5.310.01.2023 19:47582.9 km299 km
4.203.12.2022 19:24574 km337 km
4.209.07.2022 17:49568.3 km281 km
5.410.05.2022 08:42571 km276 km
3.901.05.2022 09:19562 km297 km
3.531.03.2022 00:5710 km302 km
5.617.11.2021 21:38577.6 km245 km
4.207.10.2021 02:4310 km112 km
5.014.08.2021 14:4940 km110 km
4.310.06.2021 14:16567 km281 km
5.319.05.2021 15:06597.4 km349 km
3.726.02.2021 03:02562 km303 km
4.103.02.2021 05:24212 km174 km
4.216.08.2020 03:43562 km284 km
5.315.04.2020 01:15569.9 km269 km
5.523.01.2020 21:11558 km275 km
6.024.12.2019 16:43568.6 km271 km
4.311.08.2019 18:44600 km329 km
5.016.04.2019 17:00594.6 km332 km
5.501.03.2019 00:13573.1 km342 km
4.116.08.2018 15:04626 km236 km
5.620.07.2018 10:24591.5 km316 km
5.025.06.2018 10:05589 km314 km
6.221.06.2018 16:065 km273 km
5.625.03.2018 14:28573.4 km267 km
4.112.03.2018 15:29571 km262 km
3.620.01.2018 22:27422 km81 km
4.224.12.2017 10:43561 km287 km
4.211.11.2016 23:35572.5 km292 km
5.208.11.2016 23:30558.5 km281 km
4.005.11.2016 09:01572.1 km269 km
4.502.10.2016 16:43561 km278 km
4.202.10.2016 16:38561 km279 km
4.129.04.2016 04:22550 km281 km
4.329.09.2015 15:26561 km265 km
4.529.09.2015 00:05561 km268 km
4.628.04.2015 12:41600 km268 km
4.518.11.2014 21:16562 km310 km
4.401.05.2014 23:44561 km279 km
5.618.04.2014 07:46610.4 km269 km
4.117.01.2014 06:17569.7 km286 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.