EveryQuake

Earthquakes in San Juan

14,490 earthquakes catalogued in and around San Juan between 1904 and 2026. Recorded measurements; not a forecast.

Last updated 4 August 2026 · merged from 5 catalogues
2.5
Latest earthquake · depth 113 km
04.08.2026 03:05 UTC · from centre 143 km
14,490
recorded earthquakes
M8.7
largest
1904–2026
record span
3.47
mean magnitude
12,758
epicentre inside the border

By year

Stacked by magnitude; one column per year.

077315461904: 1 (M5+)19041906: 1 (M5+)19141917: 1 (M5+)1920: 1 (M5+)1922: 4 (M5+)1923: 1 (M5+)1924: 1 (M5+)19241927: 2 (M5+)1928: 2 (M5+)1929: 1 (M5+)1930: 1 (M5+)1931: 2 (M5+)1932: 3 (M5+)1933: 3 (M5+)1934: 1 (M5+)19341936: 2 (M5+)1937: 2 (M5+)1938: 4 (M5+)1939: 5 (M5+)1940: 2 (M5+)1941: 2 (M5+)1943: 3 (M5+)1944: 1 (M5+)19441946: 1 (M5+)1947: 1 (M5+)1952: 3 (M5+)1954: 1 (M5+)19541955: 1 (M5+)1956: 1 (M5+)1957: 1 (M5+)1959: 3 (M5+)1962: 1 (M4–5)1963: 1 (M5+)1964: 17 (M4–5)1964: 4 (M5+)19641965: 1 (M3–4)1965: 18 (M4–5)1965: 8 (M5+)1966: 4 (M3–4)1966: 27 (M4–5)1966: 2 (M5+)1967: 2 (M3–4)1967: 17 (M4–5)1967: 7 (M5+)1968: 14 (M4–5)1968: 3 (M5+)1969: 1 (M3–4)1969: 12 (M4–5)1969: 4 (M5+)1970: 1 (M3–4)1970: 15 (M4–5)1970: 6 (M5+)1971: 9 (M4–5)1971: 10 (M5+)1972: 13 (M4–5)1972: 9 (M5+)1973: 5 (M3–4)1973: 14 (M4–5)1973: 3 (M5+)1974: 2 (M3–4)1974: 15 (M4–5)1974: 11 (M5+)19741975: 3 (M3–4)1975: 13 (M4–5)1975: 7 (M5+)1976: 1 (M3–4)1976: 8 (M4–5)1976: 4 (M5+)1977: 56 (M4–5)1977: 64 (M5+)1978: 12 (M4–5)1978: 16 (M5+)1979: 16 (M4–5)1979: 9 (M5+)1980: 15 (M4–5)1980: 7 (M5+)1981: 11 (M4–5)1981: 1 (M5+)1982: 21 (M4–5)1982: 3 (M5+)1983: 13 (M4–5)1983: 6 (M5+)1984: 3 (M3–4)1984: 16 (M4–5)1984: 4 (M5+)19841985: 1 (M<3)1985: 3 (M3–4)1985: 14 (M4–5)1985: 14 (M5+)1986: 1 (M3–4)1986: 30 (M4–5)1986: 7 (M5+)1987: 2 (M3–4)1987: 68 (M4–5)1987: 6 (M5+)1988: 1 (M3–4)1988: 58 (M4–5)1988: 10 (M5+)1989: 64 (M4–5)1989: 5 (M5+)1990: 1 (M3–4)1990: 37 (M4–5)1990: 4 (M5+)1991: 17 (M3–4)1991: 47 (M4–5)1991: 8 (M5+)1992: 66 (M3–4)1992: 94 (M4–5)1992: 7 (M5+)1993: 46 (M3–4)1993: 95 (M4–5)1993: 4 (M5+)1994: 37 (M3–4)1994: 67 (M4–5)1994: 2 (M5+)19941995: 12 (M<3)1995: 101 (M3–4)1995: 84 (M4–5)1995: 5 (M5+)1996: 20 (M<3)1996: 63 (M3–4)1996: 51 (M4–5)1996: 1 (M5+)1997: 38 (M<3)1997: 103 (M3–4)1997: 39 (M4–5)1997: 4 (M5+)1998: 80 (M<3)1998: 211 (M3–4)1998: 64 (M4–5)1998: 10 (M5+)1999: 68 (M<3)1999: 158 (M3–4)1999: 37 (M4–5)1999: 5 (M5+)2000: 15 (M<3)2000: 87 (M3–4)2000: 69 (M4–5)2000: 1 (M5+)2001: 20 (M<3)2001: 204 (M3–4)2001: 68 (M4–5)2001: 5 (M5+)2002: 25 (M<3)2002: 300 (M3–4)2002: 99 (M4–5)2002: 12 (M5+)2003: 149 (M<3)2003: 303 (M3–4)2003: 82 (M4–5)2003: 6 (M5+)2004: 125 (M<3)2004: 197 (M3–4)2004: 86 (M4–5)2004: 5 (M5+)20042005: 85 (M<3)2005: 211 (M3–4)2005: 89 (M4–5)2005: 5 (M5+)2006: 65 (M<3)2006: 247 (M3–4)2006: 90 (M4–5)2006: 9 (M5+)2007: 54 (M<3)2007: 268 (M3–4)2007: 66 (M4–5)2007: 9 (M5+)2008: 38 (M<3)2008: 112 (M3–4)2008: 63 (M4–5)2008: 2 (M5+)2009: 5 (M3–4)2009: 55 (M4–5)2009: 5 (M5+)2010: 9 (M3–4)2010: 70 (M4–5)2010: 12 (M5+)2011: 4 (M<3)2011: 19 (M3–4)2011: 52 (M4–5)2011: 6 (M5+)2012: 18 (M<3)2012: 62 (M3–4)2012: 72 (M4–5)2012: 7 (M5+)2013: 42 (M<3)2013: 120 (M3–4)2013: 74 (M4–5)2013: 9 (M5+)2014: 8 (M<3)2014: 99 (M3–4)2014: 65 (M4–5)2014: 5 (M5+)20142015: 34 (M<3)2015: 94 (M3–4)2015: 68 (M4–5)2015: 12 (M5+)2016: 23 (M<3)2016: 102 (M3–4)2016: 67 (M4–5)2016: 7 (M5+)2017: 1 (M<3)2017: 90 (M3–4)2017: 49 (M4–5)2017: 3 (M5+)2018: 211 (M3–4)2018: 62 (M4–5)2018: 10 (M5+)2019: 203 (M3–4)2019: 48 (M4–5)2019: 11 (M5+)2020: 78 (M<3)2020: 224 (M3–4)2020: 61 (M4–5)2020: 5 (M5+)2021: 71 (M<3)2021: 737 (M3–4)2021: 57 (M4–5)2021: 4 (M5+)2022: 100 (M<3)2022: 558 (M3–4)2022: 51 (M4–5)2022: 4 (M5+)2023: 76 (M<3)2023: 707 (M3–4)2023: 47 (M4–5)2023: 6 (M5+)2024: 79 (M<3)2024: 1,129 (M3–4)2024: 66 (M4–5)2024: 7 (M5+)20242025: 275 (M<3)2025: 730 (M3–4)2025: 94 (M4–5)2025: 1 (M5+)2026: 984 (M<3)2026: 514 (M3–4)2026: 43 (M4–5)2026: 5 (M5+)
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
8.711.11.1922 04:3270 km258 km
8.316.09.2015 22:5412.1 km323 km
8.217.08.1906 00:4035 km347 km
8.106.04.1943 16:0735 km278 km
7.809.07.1971 03:0352.2 km352 km
7.523.11.1977 09:2610.4 km120 km
7.418.04.1939 06:2235 km412 km
7.428.03.1965 16:3370 km343 km
7.115.01.1944 23:4915 km114 km
7.116.09.2015 23:1829.4 km304 km
7.115.10.1997 01:0356.9 km257 km
7.019.04.1955 20:2415 km316 km
7.007.11.1922 23:0025 km388 km
7.019.03.1904 06:280 km271 km
7.027.07.1917 02:5160 km147 km

Latest earthquakes

MagnitudeDateDepthDistance
2.504.08.2026 03:05113 km143 km
2.503.08.2026 22:04105 km156 km
4.403.08.2026 20:4795.7 km251 km
2.503.08.2026 19:4718 km177 km
3.003.08.2026 19:1333 km157 km
2.703.08.2026 19:0310 km166 km
2.803.08.2026 17:1588 km99 km
3.303.08.2026 16:19142 km250 km
2.703.08.2026 15:1288 km164 km
3.203.08.2026 12:17118 km134 km
3.303.08.2026 08:05112 km169 km
2.903.08.2026 07:59103.2 km227 km
2.703.08.2026 03:5984 km136 km
4.202.08.2026 22:07115.5 km123 km
2.602.08.2026 22:02114 km221 km
2.602.08.2026 19:4810 km209 km
2.502.08.2026 16:1110 km104 km
2.502.08.2026 10:28106 km161 km
2.702.08.2026 09:29120 km208 km
2.601.08.2026 19:1696 km150 km
2.701.08.2026 09:0010 km221 km
4.031.07.2026 14:0499.4 km303 km
2.731.07.2026 12:08120 km192 km
2.731.07.2026 03:1771.7 km280 km
2.831.07.2026 02:1310 km235 km
4.030.07.2026 21:18220.9 km125 km
3.630.07.2026 15:58112 km119 km
2.530.07.2026 14:08102 km122 km
2.730.07.2026 11:0883 km143 km
2.530.07.2026 06:47129.3 km94 km
2.530.07.2026 02:33125 km193 km
2.530.07.2026 01:4610 km135 km
2.530.07.2026 01:28100 km249 km
2.930.07.2026 01:14105 km130 km
2.529.07.2026 17:3197 km107 km
2.529.07.2026 15:39119 km139 km
2.629.07.2026 04:52105 km90 km
3.129.07.2026 02:13115.8 km195 km
2.628.07.2026 23:0496 km110 km
2.628.07.2026 20:1710 km88 km
2.528.07.2026 19:36117 km152 km
2.728.07.2026 14:12183 km90 km
2.828.07.2026 12:4872 km100 km
2.628.07.2026 10:1878 km216 km
2.528.07.2026 09:46102 km130 km
3.328.07.2026 05:44126 km193 km
2.628.07.2026 05:07120 km199 km
2.628.07.2026 03:09112 km114 km
2.628.07.2026 01:3123 km178 km
3.328.07.2026 00:5510 km38 km
2.527.07.2026 23:4796 km100 km
2.627.07.2026 21:3183 km155 km
3.827.07.2026 19:37121 km197 km
2.527.07.2026 16:16126 km227 km
2.727.07.2026 10:1180 km98 km
2.527.07.2026 09:3149 km177 km
2.927.07.2026 09:0610 km173 km
2.627.07.2026 08:2776 km122 km
4.327.07.2026 03:44102.1 km201 km
3.126.07.2026 22:1610 km163 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.