EveryQuake

Earthquakes in Gunma Prefecture

1,124 earthquakes catalogued in and around Gunma Prefecture between 1909 and 2026. Recorded measurements; not a forecast.

Last updated 4 August 2026 · merged from 5 catalogues
3.1
Latest earthquake · depth 10 km
03.08.2026 06:00 UTC · from centre 65 km
1,124
recorded earthquakes
M7.9
largest
1909–2026
record span
4.48
mean magnitude
238
epicentre inside the border

By year

Stacked by magnitude; one column per year.

048971909: 1 (M5+)19091916: 1 (M5+)1918: 1 (M5+)19181921: 2 (M5+)1922: 1 (M5+)1923: 7 (M5+)1924: 3 (M5+)1927: 2 (M5+)19271928: 1 (M5+)1929: 1 (M5+)1931: 5 (M5+)1932: 1 (M5+)1933: 1 (M5+)1934: 1 (M5+)1935: 1 (M5+)19361938: 2 (M5+)1940: 1 (M5+)1941: 1 (M5+)1943: 2 (M5+)19451949: 2 (M5+)19541956: 2 (M5+)1958: 1 (M4–5)1958: 2 (M5+)1959: 2 (M5+)1961: 1 (M4–5)1962: 2 (M4–5)1963: 2 (M4–5)19631964: 10 (M4–5)1964: 1 (M5+)1965: 2 (M3–4)1965: 13 (M4–5)1965: 3 (M5+)1966: 1 (M3–4)1966: 91 (M4–5)1966: 5 (M5+)1967: 35 (M4–5)1967: 1 (M5+)1968: 11 (M4–5)1968: 5 (M5+)1969: 8 (M4–5)1969: 1 (M5+)1970: 4 (M4–5)1971: 7 (M4–5)1971: 5 (M5+)1972: 2 (M4–5)1972: 3 (M5+)19721973: 3 (M3–4)1973: 4 (M4–5)1973: 1 (M5+)1974: 1 (M3–4)1974: 5 (M4–5)1974: 1 (M5+)1975: 1 (M3–4)1975: 5 (M4–5)1975: 4 (M5+)1976: 9 (M4–5)1976: 3 (M5+)1977: 6 (M4–5)1977: 1 (M5+)1978: 1 (M3–4)1978: 6 (M4–5)1978: 1 (M5+)1979: 1 (M3–4)1979: 5 (M4–5)1980: 1 (M3–4)1980: 5 (M4–5)1980: 3 (M5+)1981: 7 (M4–5)1981: 1 (M5+)19811982: 5 (M4–5)1983: 9 (M4–5)1983: 7 (M5+)1984: 7 (M4–5)1984: 6 (M5+)1985: 9 (M4–5)1985: 1 (M5+)1986: 13 (M4–5)1986: 2 (M5+)1987: 1 (M3–4)1987: 11 (M4–5)1987: 5 (M5+)1988: 2 (M3–4)1988: 6 (M4–5)1988: 2 (M5+)1989: 1 (M<3)1989: 2 (M3–4)1989: 4 (M4–5)1989: 4 (M5+)1990: 18 (M4–5)1990: 6 (M5+)19901991: 7 (M4–5)1991: 3 (M5+)1992: 2 (M3–4)1992: 11 (M4–5)1992: 1 (M5+)1993: 6 (M4–5)1993: 1 (M5+)1994: 1 (M3–4)1994: 4 (M4–5)1994: 4 (M5+)1995: 13 (M4–5)1996: 4 (M3–4)1996: 16 (M4–5)1996: 3 (M5+)1997: 1 (M3–4)1997: 4 (M4–5)1997: 3 (M5+)1998: 3 (M3–4)1998: 5 (M4–5)1998: 4 (M5+)1999: 3 (M3–4)1999: 7 (M4–5)1999: 1 (M5+)19992000: 1 (M3–4)2000: 9 (M4–5)2000: 1 (M5+)2001: 1 (M3–4)2001: 15 (M4–5)2001: 2 (M5+)2002: 2 (M3–4)2002: 7 (M4–5)2003: 1 (M<3)2003: 1 (M3–4)2003: 3 (M4–5)2003: 3 (M5+)2004: 2 (M3–4)2004: 45 (M4–5)2004: 21 (M5+)2005: 2 (M<3)2005: 3 (M3–4)2005: 27 (M4–5)2005: 3 (M5+)2006: 4 (M3–4)2006: 9 (M4–5)2006: 1 (M5+)2007: 6 (M3–4)2007: 15 (M4–5)2007: 3 (M5+)2008: 2 (M<3)2008: 3 (M3–4)2008: 9 (M4–5)20082009: 1 (M3–4)2009: 7 (M4–5)2009: 1 (M5+)2010: 8 (M4–5)2010: 1 (M5+)2011: 1 (M3–4)2011: 40 (M4–5)2011: 13 (M5+)2012: 2 (M3–4)2012: 19 (M4–5)2012: 7 (M5+)2013: 3 (M3–4)2013: 11 (M4–5)2013: 4 (M5+)2014: 1 (M3–4)2014: 17 (M4–5)2014: 2 (M5+)2015: 1 (M3–4)2015: 17 (M4–5)2015: 3 (M5+)2016: 21 (M4–5)2016: 4 (M5+)2017: 1 (M3–4)2017: 13 (M4–5)2017: 2 (M5+)20172018: 2 (M3–4)2018: 7 (M4–5)2018: 3 (M5+)2019: 2 (M3–4)2019: 11 (M4–5)2020: 4 (M3–4)2020: 10 (M4–5)2020: 4 (M5+)2021: 6 (M3–4)2021: 9 (M4–5)2021: 1 (M5+)2022: 3 (M3–4)2022: 16 (M4–5)2022: 1 (M5+)2023: 2 (M3–4)2023: 11 (M4–5)2023: 1 (M5+)2024: 7 (M3–4)2024: 12 (M4–5)2024: 2 (M5+)2025: 9 (M3–4)2025: 15 (M4–5)2026: 12 (M3–4)2026: 10 (M4–5)2026: 3 (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
7.901.09.1923 02:5815 km124 km
7.911.03.2011 06:1525.4 km187 km
7.602.09.1923 02:4615 km185 km
7.616.06.1964 04:0110 km210 km
7.501.01.2024 07:109.7 km188 km
7.301.09.1923 03:0335 km162 km
6.814.01.1924 20:5015 km78 km
6.729.09.1956 23:2066.1 km144 km
6.702.09.1923 09:2635 km175 km
6.711.04.2011 08:1613.3 km148 km
6.616.07.2007 01:1315.1 km118 km
6.623.10.2004 08:5610.4 km87 km
6.621.09.1931 02:2015 km52 km
6.507.02.1938 14:43100 km43 km
6.517.12.1987 02:0845.1 km169 km

Latest earthquakes

MagnitudeDateDepthDistance
3.103.08.2026 06:0010 km65 km
4.702.07.2026 11:48145.9 km85 km
3.626.06.2026 17:3310 km74 km
5.326.06.2026 13:2821.8 km109 km
3.124.06.2026 04:320 km65 km
3.024.06.2026 04:280 km74 km
3.224.06.2026 04:2410 km74 km
3.120.06.2026 19:5750 km83 km
4.416.06.2026 10:5542.4 km106 km
5.416.06.2026 10:4652 km80 km
3.503.06.2026 15:09196.6 km62 km
3.131.05.2026 18:1080 km83 km
4.024.05.2026 18:00148.1 km88 km
4.412.05.2026 00:0234.3 km88 km
4.407.05.2026 18:5090.7 km85 km
3.401.04.2026 16:2860 km75 km
4.901.04.2026 01:0664.3 km91 km
4.515.03.2026 05:0688.6 km33 km
3.102.03.2026 04:1510 km34 km
4.309.02.2026 12:27104.2 km52 km
4.306.02.2026 15:5887.4 km83 km
3.506.02.2026 00:2310 km50 km
3.130.01.2026 19:4150 km77 km
4.025.01.2026 02:4663.1 km96 km
5.215.01.2026 05:4810 km115 km
3.529.12.2025 12:0890 km70 km
4.912.12.2025 10:0567.7 km91 km
3.107.12.2025 22:4560 km75 km
3.726.10.2025 03:0710 km44 km
4.426.10.2025 03:040 km37 km
4.307.09.2025 23:24132.8 km89 km
4.205.09.2025 12:0056.8 km93 km
3.125.08.2025 03:5860 km77 km
4.523.08.2025 10:22133.4 km49 km
3.220.08.2025 08:2610 km53 km
4.401.08.2025 13:58116 km42 km
4.129.07.2025 18:5878 km92 km
4.030.06.2025 16:1366.1 km87 km
4.321.04.2025 13:11116.2 km84 km
3.901.04.2025 12:33121.4 km74 km
3.824.03.2025 02:3710 km64 km
4.220.03.2025 09:15176.2 km85 km
4.303.03.2025 03:50136.9 km34 km
4.011.02.2025 20:4166.4 km70 km
3.723.01.2025 18:010 km65 km
4.422.01.2025 23:0910 km59 km
4.922.01.2025 17:4910 km63 km
3.521.01.2025 21:060 km65 km
4.008.01.2025 19:1594.3 km64 km
4.317.12.2024 13:1176.1 km85 km
4.304.12.2024 10:1134.6 km84 km
3.517.11.2024 00:37156.6 km21 km
3.930.10.2024 06:1476.8 km77 km
4.325.10.2024 21:2074.6 km85 km
4.616.10.2024 08:5363.8 km83 km
4.423.09.2024 09:0391.9 km67 km
4.730.07.2024 16:47121.2 km99 km
4.202.07.2024 11:40186.7 km77 km
4.124.06.2024 14:2455.7 km81 km
3.717.06.2024 18:3360 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.