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Earthquakes in Río San Juan

977 earthquakes catalogued in and around Río San Juan between 1900 and 2026. Recorded measurements; not a forecast.

Last updated 4 August 2026 · merged from 5 catalogues
3.0
Latest earthquake · depth 8 km
04.08.2026 04:21 UTC · from centre 94 km
977
recorded earthquakes
M7.6
largest
1900–2026
record span
3.70
mean magnitude
353
epicentre inside the border

By year

Stacked by magnitude; one column per year.

0551101900: 1 (M5+)19001901: 1 (M5+)1905: 1 (M5+)1907: 1 (M5+)1909: 1 (M5+)19101916: 2 (M5+)1919: 1 (M5+)19201924: 3 (M5+)1925: 1 (M5+)19301931: 2 (M5+)1935: 1 (M5+)1936: 2 (M5+)1939: 1 (M5+)19401941: 1 (M5+)1944: 1 (M5+)1948: 1 (M5+)1949: 1 (M5+)1950: 1 (M5+)19501951: 1 (M5+)1952: 1 (M5+)1956: 1 (M5+)19601965: 2 (M4–5)1967: 1 (M4–5)1967: 2 (M5+)1968: 1 (M4–5)1968: 1 (M5+)1969: 1 (M5+)1970: 1 (M4–5)1970: 1 (M5+)19701972: 1 (M4–5)1973: 2 (M4–5)1973: 1 (M5+)1974: 1 (M5+)1975: 4 (M4–5)1975: 1 (M5+)1976: 1 (M4–5)1976: 1 (M5+)1978: 1 (M3–4)1978: 1 (M4–5)1978: 2 (M5+)1979: 2 (M4–5)1980: 2 (M5+)19801981: 2 (M4–5)1982: 1 (M4–5)1982: 1 (M5+)1983: 1 (M4–5)1983: 1 (M5+)1984: 1 (M3–4)1984: 2 (M4–5)1985: 1 (M4–5)1985: 1 (M5+)1986: 3 (M4–5)1987: 11 (M4–5)1987: 1 (M5+)1988: 12 (M4–5)1988: 1 (M5+)1989: 1 (M<3)1989: 6 (M4–5)1989: 1 (M5+)1990: 6 (M4–5)1990: 2 (M5+)19901991: 5 (M5+)1992: 5 (M4–5)1992: 1 (M5+)1993: 7 (M4–5)1994: 4 (M4–5)1995: 2 (M3–4)1995: 4 (M4–5)1996: 1 (M3–4)1996: 3 (M4–5)1996: 1 (M5+)1997: 2 (M3–4)1997: 2 (M4–5)1997: 1 (M5+)1998: 2 (M3–4)1998: 1 (M4–5)1999: 1 (M3–4)2000: 1 (M3–4)20002001: 7 (M4–5)2002: 1 (M<3)2002: 5 (M3–4)2002: 9 (M4–5)2002: 1 (M5+)2003: 1 (M3–4)2003: 7 (M4–5)2004: 1 (M<3)2004: 1 (M3–4)2004: 13 (M4–5)2004: 1 (M5+)2005: 7 (M3–4)2005: 14 (M4–5)2005: 2 (M5+)2006: 3 (M3–4)2006: 7 (M4–5)2006: 1 (M5+)2007: 1 (M<3)2007: 5 (M4–5)2008: 2 (M<3)2008: 1 (M3–4)2008: 4 (M4–5)2008: 1 (M5+)2009: 4 (M4–5)2009: 1 (M5+)2010: 1 (M3–4)2010: 6 (M4–5)2010: 1 (M5+)20102011: 1 (M<3)2011: 8 (M3–4)2011: 4 (M4–5)2011: 5 (M5+)2012: 2 (M<3)2012: 2 (M3–4)2012: 15 (M4–5)2012: 3 (M5+)2013: 7 (M4–5)2014: 1 (M3–4)2014: 5 (M4–5)2014: 2 (M5+)2015: 1 (M4–5)2016: 5 (M4–5)2016: 2 (M5+)2017: 4 (M3–4)2017: 3 (M4–5)2018: 48 (M3–4)2018: 16 (M4–5)2018: 2 (M5+)2019: 41 (M3–4)2019: 11 (M4–5)2019: 1 (M5+)2020: 49 (M3–4)2020: 11 (M4–5)20202021: 19 (M<3)2021: 48 (M3–4)2021: 3 (M4–5)2021: 1 (M5+)2022: 29 (M<3)2022: 65 (M3–4)2022: 6 (M4–5)2023: 18 (M<3)2023: 50 (M3–4)2023: 9 (M4–5)2023: 1 (M5+)2024: 17 (M<3)2024: 83 (M3–4)2024: 8 (M4–5)2024: 2 (M5+)2025: 30 (M<3)2025: 25 (M3–4)2025: 8 (M4–5)2025: 2 (M5+)2026: 29 (M<3)2026: 10 (M3–4)2026: 2 (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
7.605.09.2012 14:4220.7 km171 km
7.622.04.1991 21:5615.7 km239 km
7.621.12.1939 20:5425 km145 km
7.505.10.1950 16:0997.9 km108 km
7.326.04.1916 02:2135 km154 km
7.325.03.1990 13:2221.2 km166 km
7.221.06.1900 20:520 km180 km
7.230.12.1907 05:260 km216 km
7.224.04.1916 08:0235 km63 km
7.224.10.1956 14:4235 km228 km
7.204.03.1924 10:0715 km179 km
7.116.08.1909 06:580 km154 km
7.108.10.1901 02:16—221 km
7.115.10.1967 08:00168.8 km167 km
7.019.11.1948 01:0480 km181 km

Latest earthquakes

MagnitudeDateDepthDistance
3.004.08.2026 04:218 km94 km
2.526.07.2026 20:1921 km82 km
4.221.07.2026 07:13149 km93 km
2.517.07.2026 02:58153 km86 km
2.808.07.2026 12:537 km101 km
2.608.07.2026 09:22202 km84 km
2.802.07.2026 20:1011 km108 km
2.802.07.2026 17:147 km101 km
2.926.06.2026 11:53300 km109 km
2.822.06.2026 05:14192 km82 km
3.415.06.2026 09:3743 km88 km
5.010.06.2026 03:0165.5 km154 km
4.109.06.2026 16:06164.1 km120 km
3.409.06.2026 12:4110 km46 km
3.308.06.2026 01:14300 km90 km
3.308.06.2026 00:0767 km58 km
2.505.06.2026 21:4013 km77 km
2.713.05.2026 14:45157 km68 km
2.710.05.2026 12:45136 km86 km
3.206.05.2026 22:54128 km85 km
2.528.04.2026 21:066 km72 km
3.128.04.2026 09:51219 km89 km
2.924.04.2026 18:373 km42 km
2.621.04.2026 04:14213 km97 km
3.104.04.2026 10:53200 km117 km
2.502.04.2026 18:55199 km90 km
2.502.04.2026 14:24150 km92 km
2.627.03.2026 03:3528 km47 km
2.522.03.2026 11:1114 km61 km
2.520.03.2026 09:592 km90 km
2.919.03.2026 13:58120 km91 km
3.113.03.2026 02:3418 km93 km
2.812.03.2026 08:5810 km81 km
2.911.03.2026 05:4010 km48 km
2.606.03.2026 12:51154 km89 km
2.526.02.2026 06:048 km69 km
2.922.02.2026 07:1710 km91 km
2.513.02.2026 13:36159 km99 km
2.710.02.2026 04:3710 km78 km
2.627.01.2026 03:595 km91 km
2.518.01.2026 03:149 km104 km
3.802.01.2026 14:0128 km91 km
3.029.12.2025 18:135 km92 km
2.526.12.2025 20:36147 km82 km
2.718.12.2025 23:31148 km88 km
2.513.12.2025 08:005 km92 km
3.210.12.2025 00:223 km71 km
2.501.12.2025 13:358 km86 km
3.425.11.2025 11:30208 km82 km
4.522.11.2025 10:29218.7 km79 km
2.920.11.2025 12:429 km92 km
3.219.11.2025 17:5210 km25 km
3.016.11.2025 00:477 km92 km
2.508.11.2025 07:238 km92 km
2.606.11.2025 20:586 km92 km
4.903.11.2025 15:365.7 km94 km
3.401.11.2025 22:41201 km72 km
3.129.10.2025 06:47139 km88 km
3.324.10.2025 11:374 km88 km
3.224.10.2025 11:098 km90 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.