EveryQuake

Earthquakes in Iwate Prefecture

2,591 earthquakes catalogued in and around Iwate Prefecture between 1900 and 2026.

Last updated 14 October 2026 · merged from 5 catalogues
3.4
Latest earthquake · depth 40 km
04.10.2026 11:56 UTC · from centre 84 km
2,591
recorded earthquakes
M9.1
largest
1900–2026
record span
4.40
mean magnitude
1,025
epicentre inside the border

By year

Stacked by magnitude; one column per year.

01893781900: 2 (M5+)19001901: 4 (M5+)1902: 2 (M5+)1905: 1 (M5+)1907: 1 (M5+)19101912: 1 (M5+)1914: 1 (M5+)1915: 5 (M5+)1916: 2 (M5+)1919: 1 (M5+)19201921: 1 (M5+)1922: 2 (M5+)1925: 1 (M5+)1926: 1 (M5+)1927: 7 (M5+)1928: 1 (M5+)19301931: 5 (M5+)1932: 1 (M5+)1933: 5 (M5+)1934: 1 (M5+)1935: 1 (M5+)1936: 1 (M5+)1937: 3 (M5+)1938: 3 (M5+)1939: 4 (M5+)1940: 4 (M5+)19401941: 1 (M5+)1943: 4 (M5+)1944: 2 (M5+)1945: 1 (M5+)19501951: 2 (M5+)1952: 3 (M5+)1953: 1 (M5+)1954: 1 (M5+)1955: 2 (M5+)1956: 2 (M5+)1958: 1 (M4–5)1958: 4 (M5+)1959: 1 (M5+)1960: 7 (M5+)19601962: 4 (M4–5)1962: 4 (M5+)1963: 1 (M4–5)1964: 6 (M4–5)1964: 3 (M5+)1965: 8 (M4–5)1965: 5 (M5+)1966: 3 (M4–5)1966: 3 (M5+)1967: 9 (M4–5)1967: 2 (M5+)1968: 17 (M4–5)1968: 21 (M5+)1969: 3 (M4–5)1969: 6 (M5+)1970: 16 (M4–5)1970: 5 (M5+)19701971: 6 (M4–5)1971: 6 (M5+)1972: 6 (M4–5)1972: 5 (M5+)1973: 3 (M3–4)1973: 7 (M4–5)1973: 5 (M5+)1974: 2 (M3–4)1974: 10 (M4–5)1974: 3 (M5+)1975: 3 (M4–5)1975: 8 (M5+)1976: 5 (M4–5)1976: 4 (M5+)1977: 5 (M4–5)1977: 1 (M5+)1978: 20 (M4–5)1978: 7 (M5+)1979: 11 (M4–5)1980: 12 (M4–5)1980: 4 (M5+)19801981: 4 (M4–5)1981: 10 (M5+)1982: 11 (M4–5)1982: 3 (M5+)1983: 12 (M4–5)1983: 4 (M5+)1984: 7 (M4–5)1985: 15 (M4–5)1985: 4 (M5+)1986: 14 (M4–5)1986: 2 (M5+)1987: 1 (M3–4)1987: 15 (M4–5)1987: 4 (M5+)1988: 10 (M4–5)1988: 1 (M5+)1989: 6 (M3–4)1989: 6 (M4–5)1989: 4 (M5+)1990: 5 (M4–5)1990: 1 (M5+)19901991: 1 (M3–4)1991: 8 (M4–5)1991: 2 (M5+)1992: 11 (M4–5)1992: 10 (M5+)1993: 1 (M3–4)1993: 10 (M4–5)1993: 6 (M5+)1994: 10 (M4–5)1994: 9 (M5+)1995: 1 (M3–4)1995: 22 (M4–5)1995: 5 (M5+)1996: 24 (M3–4)1996: 22 (M4–5)1996: 10 (M5+)1997: 4 (M3–4)1997: 10 (M4–5)1997: 3 (M5+)1998: 2 (M3–4)1998: 8 (M4–5)1998: 2 (M5+)1999: 4 (M3–4)1999: 9 (M4–5)1999: 2 (M5+)2000: 3 (M3–4)2000: 14 (M4–5)2000: 2 (M5+)20002001: 5 (M3–4)2001: 9 (M4–5)2001: 3 (M5+)2002: 4 (M3–4)2002: 20 (M4–5)2002: 9 (M5+)2003: 42 (M<3)2003: 10 (M3–4)2003: 56 (M4–5)2003: 5 (M5+)2004: 7 (M<3)2004: 6 (M3–4)2004: 22 (M4–5)2004: 5 (M5+)2005: 7 (M3–4)2005: 23 (M4–5)2005: 7 (M5+)2006: 1 (M<3)2006: 9 (M3–4)2006: 16 (M4–5)2006: 4 (M5+)2007: 4 (M3–4)2007: 15 (M4–5)2007: 1 (M5+)2008: 81 (M3–4)2008: 98 (M4–5)2008: 9 (M5+)2009: 2 (M3–4)2009: 10 (M4–5)2009: 2 (M5+)2010: 4 (M3–4)2010: 18 (M4–5)2010: 4 (M5+)20102011: 15 (M3–4)2011: 251 (M4–5)2011: 112 (M5+)2012: 15 (M3–4)2012: 76 (M4–5)2012: 18 (M5+)2013: 4 (M3–4)2013: 46 (M4–5)2013: 8 (M5+)2014: 11 (M3–4)2014: 41 (M4–5)2014: 8 (M5+)2015: 16 (M3–4)2015: 52 (M4–5)2015: 9 (M5+)2016: 12 (M3–4)2016: 29 (M4–5)2016: 3 (M5+)2017: 7 (M3–4)2017: 24 (M4–5)2017: 3 (M5+)2018: 12 (M3–4)2018: 24 (M4–5)2018: 7 (M5+)2019: 12 (M3–4)2019: 28 (M4–5)2019: 3 (M5+)2020: 32 (M3–4)2020: 35 (M4–5)2020: 4 (M5+)20202021: 30 (M3–4)2021: 42 (M4–5)2021: 7 (M5+)2022: 28 (M3–4)2022: 22 (M4–5)2022: 5 (M5+)2023: 36 (M3–4)2023: 28 (M4–5)2023: 5 (M5+)2024: 28 (M3–4)2024: 39 (M4–5)2024: 3 (M5+)2025: 26 (M3–4)2025: 35 (M4–5)2025: 11 (M5+)2026: 54 (M3–4)2026: 52 (M4–5)2026: 9 (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
9.111.03.2011 05:4619.7 km175 km
8.216.05.1968 00:4812.1 km213 km
7.816.05.1968 10:3918 km238 km
7.820.03.1960 17:0715 km163 km
7.728.12.1994 12:1910.6 km201 km
7.726.05.1983 03:0016.5 km208 km
7.709.03.1931 03:4935 km140 km
7.612.06.1978 08:1448.5 km164 km
7.616.06.1964 04:0110 km226 km
7.608.12.2025 14:1544.2 km171 km
7.501.11.1915 07:2330 km181 km
7.509.08.1901 18:3335 km137 km
7.420.04.2026 07:5229.2 km144 km
7.411.03.2011 06:0820 km193 km
7.401.11.1989 18:2531.8 km134 km

Latest earthquakes

MagnitudeDateDepthDistance
3.404.10.2026 11:5640 km84 km
3.528.09.2026 12:0450 km95 km
4.423.09.2026 21:3570 km110 km
3.713.09.2026 11:1950 km109 km
3.413.09.2026 04:5350 km105 km
3.710.09.2026 15:2160 km43 km
3.608.09.2026 07:1950 km95 km
3.307.09.2026 08:4760 km77 km
3.804.09.2026 12:1070 km94 km
3.502.09.2026 10:1210 km79 km
4.428.08.2026 14:3167.1 km88 km
4.827.08.2026 19:5463.8 km137 km
3.513.08.2026 02:2950 km63 km
5.608.08.2026 17:5734 km103 km
3.408.08.2026 02:0750 km55 km
3.707.08.2026 21:2950 km104 km
3.606.08.2026 04:1850 km91 km
4.404.08.2026 21:0843.5 km134 km
3.101.08.2026 23:1750 km85 km
4.330.07.2026 16:2051.3 km110 km
3.630.07.2026 04:5150 km72 km
3.417.07.2026 21:3140 km84 km
4.216.07.2026 16:0060 km114 km
4.114.07.2026 08:0758.2 km107 km
3.510.07.2026 20:4050 km104 km
4.308.07.2026 14:3369.8 km74 km
4.608.07.2026 07:3573.6 km83 km
3.408.07.2026 07:3560 km79 km
3.406.07.2026 11:2958.6 km105 km
4.103.07.2026 14:3755.1 km104 km
4.203.07.2026 01:4438 km110 km
4.202.07.2026 20:2465.1 km87 km
6.001.07.2026 12:0840 km107 km
4.930.06.2026 14:0251.1 km106 km
4.228.06.2026 14:4960.8 km102 km
4.328.06.2026 05:3948 km109 km
3.528.06.2026 00:1240 km114 km
5.827.06.2026 20:2156.7 km107 km
3.427.06.2026 17:4370 km50 km
4.227.06.2026 00:5064.9 km109 km
4.625.06.2026 16:1154.8 km110 km
4.625.06.2026 11:5855.4 km108 km
3.225.06.2026 10:2150 km64 km
4.125.06.2026 01:1164 km105 km
3.124.06.2026 23:2250 km106 km
3.324.06.2026 23:1250 km106 km
6.924.06.2026 22:3050.5 km97 km
4.212.06.2026 00:4759.3 km112 km
4.311.06.2026 14:2255.4 km100 km
3.711.06.2026 06:0650 km104 km
4.310.06.2026 09:5539.3 km91 km
4.309.06.2026 21:3454.7 km60 km
4.106.06.2026 20:1558.6 km56 km
4.804.06.2026 17:4510 km111 km
4.331.05.2026 12:3643.2 km118 km
4.229.05.2026 08:5361.9 km77 km
4.326.05.2026 20:2041.5 km107 km
4.725.05.2026 08:1453 km109 km
4.422.05.2026 16:5349.8 km110 km
3.921.05.2026 04:2050 km95 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.