Earthquakes by city Japan 100 km
Seismic city profile

Chikuma

Chikuma, Japan: 346 earthquakes of magnitude 4.0+ detected within 100 km.

Population
59,381
Residents in the indexed city record.
Earthquakes
346
Earthquakes at M4.0+ nearby.
Max magnitude
6.6
Strongest recorded event in the current radius.
Timezone
Asia/Tokyo
Coordinates 36.527, 138.089
Nearby activity pulse
Last 30 days
2
Last 12 months
6
Last nearby event: 2026-04-18 05:54 UTC
Strongest nearby event
M 6.6
JP
2004-10-23 08:56 UTC

Map

Earthquakes within 100 km of Chikuma

The map centers on Chikuma and highlights the most recent earthquakes detected within 100 km.

Average magnitude
4.5
Average depth
75.4 km

Timeline

Recent seismic activity

Latest 6 events shown
UTC Magnitude Region Depth
2026-04-18 05:54 M 4.9
Chikuma
Japan
10.0 km
2026-04-18 04:20 M 4.9
Chikuma
Japan
10.0 km
2026-01-15 05:48 M 5.1 Matsumoto
Japan
2.3 km
2026-01-15 05:40 M 4.7
Azumino
Japan
7.8 km
2025-08-23 10:22 M 4.1
Chichibu
Japan
129.5 km
2025-05-29 06:28 M 4.3
Takayama
Japan
10.0 km

Monthly profile

Recent monthly trend

2025-08 1 events
2026-01 2 events
2026-04 2 events

Historic snapshot

Earthquakes history

1
1918
1
1934
1
1941
7
1966
2
1967
1
1968
1
1971
2
1973
1
1975
3
1976
2
1977
2
1978
1
1979
5
1981
1
1982
4
1983
4
1984
1
1985
7
1986
5
1987
3
1988
19
1990
4
1991
1
1992
7
1993
1
1994
4
1995
4
1996
3
1997
16
1998
1
1999
5
2000
8
2001
8
2002
6
2003
37
2004
15
2005
5
2006
8
2007
5
2008
2
2009
4
2010
29
2011
6
2012
6
2013
15
2014
7
2015
9
2016
7
2017
4
2018
3
2019
14
2020
7
2021
7
2022
1
2023
4
2024
5
2025
4
2026
Year Max magnitude Earthquakes
2026 M 5.1 4
2025 M 4.8 5
2024 M 4.9 4
2023 M 4.3 1
2022 M 4.5 7
2021 M 5.1 7
2020 M 5.2 14
2019 M 4.6 3
2018 M 5.1 4
2017 M 5.2 7
2016 M 4.6 9
2015 M 4.9 7
2014 M 6.2 15
2013 M 4.5 6
2012 M 4.8 6
2011 M 6.2 29
2010 M 4.6 4
2009 M 4.6 2
2008 M 4.4 5
2007 M 4.6 8
2006 M 4.3 5
2005 M 4.9 15
2004 M 6.6 37
2003 M 4.5 6
2002 M 4.7 8
2001 M 5.3 8
2000 M 4.4 5
1999 M 4.9 1
1998 M 5.5 16
1997 M 4.2 3
1996 M 4.7 4
1995 M 4.7 4
1994 M 4.5 1
1993 M 4.8 7
1992 M 4.5 1
1991 M 5.2 4
1990 M 5.3 19
1988 M 4.7 3
1987 M 4.8 5
1986 M 5.6 7
1985 M 4.9 1
1984 M 6.2 4
1983 M 5.1 4
1982 M 4.5 1
1981 M 5.4 5
1979 M 4.3 1
1978 M 4.3 2
1977 M 5.4 2
1976 M 5.4 3
1975 M 4.9 1
1973 M 4.9 2
1971 M 5.7 1
1968 M 5.6 1
1967 M 5.7 2
1966 M 5.8 7
1941 M 6.3 1
1934 M 5.7 1
1918 M 6.1 1