Earthquakes by city Japan 100 km
Seismic city profile

Nihammatsu

Nihammatsu, Japan: 1449 earthquakes of magnitude 4.0+ detected within 100 km.

Population
48,348
Residents in the indexed city record.
Earthquakes
1449
Earthquakes at M4.0+ nearby.
Max magnitude
8.0
Strongest recorded event in the current radius.
Timezone
Asia/Tokyo
Coordinates 35.373, 139.392
Nearby activity pulse
Last 30 days
2
Last 12 months
36
Last nearby event: 2026-04-05 23:17 UTC
Strongest nearby event
M 8.0
JP
1923-09-01 02:58 UTC

Map

Earthquakes within 100 km of Nihammatsu

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

Average magnitude
4.6
Average depth
63.2 km

Timeline

Recent seismic activity

Latest 25 events shown
UTC Magnitude Region Depth
2026-04-05 23:17 M 4.0
Tokyo
Japan
138.6 km
2026-04-01 01:06 M 4.9
Kashiwa
Japan
57.2 km
2026-03-28 10:36 M 4.1
Fujisawa
Japan
74.4 km
2026-03-16 11:37 M 4.5
Itō
Japan
143.1 km
2026-02-19 08:24 M 4.4
Isumi
Japan
10.0 km
2026-02-09 12:27 M 4.3
Ōta
Japan
104.2 km
2026-02-06 15:58 M 4.2
Saitama
Japan
95.2 km
2026-02-05 00:19 M 4.5
Sakura
Japan
60.0 km
2026-01-29 02:47 M 4.0
Tateyama
Japan
26.6 km
2026-01-29 01:40 M 4.4
Tateyama
Japan
40.2 km
2026-01-29 01:25 M 4.4
Tateyama
Japan
19.8 km
2026-01-17 16:49 M 4.3
Chiba
Japan
72.1 km
2026-01-09 11:07 M 4.4
Mobara
Japan
28.4 km
2025-12-02 11:07 M 4.4
Fujisawa
Japan
10.0 km
2025-11-16 07:03 M 4.2
Mobara
Japan
68.9 km
2025-11-13 21:36 M 4.3
Chiba
Japan
97.4 km
2025-11-04 05:00 M 4.2
Tsukuba
Japan
83.6 km
2025-10-26 13:34 M 4.6
Chiba
Japan
85.4 km
2025-10-24 06:47 M 4.6
Chiba
Japan
76.7 km
2025-10-03 03:48 M 4.5
Kawasaki
Japan
106.4 km
2025-10-03 03:37 M 4.4
Tateyama
Japan
52.0 km
2025-09-16 21:33 M 4.4
Fujisawa
Japan
10.0 km
2025-09-08 23:53 M 4.3
Chiba
Japan
66.6 km
2025-09-05 12:00 M 4.2
Saitama
Japan
70.0 km
2025-08-31 21:53 M 4.4
Chiba
Japan
51.8 km

Monthly profile

Recent monthly trend

2025-08 1 events
2025-09 3 events
2025-10 4 events
2025-11 3 events
2025-12 1 events
2026-01 5 events
2026-02 4 events
2026-03 2 events
2026-04 2 events

Historic snapshot

Earthquakes history

1
1909
2
1921
1
1922
7
1923
1
1924
1
1926
1
1927
1
1928
1
1929
4
1930
4
1931
1
1934
1
1935
1
1938
1
1944
1
1951
1
1952
2
1956
1
1959
1
1964
3
1965
1
1967
1
1968
1
1971
11
1973
13
1974
12
1975
16
1976
13
1977
24
1978
12
1979
29
1980
12
1981
19
1982
32
1983
19
1984
28
1985
28
1986
24
1987
49
1988
28
1989
23
1990
18
1991
15
1992
9
1993
14
1994
19
1995
30
1996
31
1997
21
1998
10
1999
19
2000
19
2001
15
2002
18
2003
23
2004
44
2005
40
2006
37
2007
34
2008
11
2009
14
2010
51
2011
47
2012
23
2013
44
2014
36
2015
43
2016
33
2017
33
2018
33
2019
29
2020
28
2021
45
2022
35
2023
50
2024
33
2025
13
2026
Year Max magnitude Earthquakes
2026 M 4.9 13
2025 M 4.6 33
2024 M 5.2 50
2023 M 5.2 35
2022 M 5.0 45
2021 M 5.9 28
2020 M 5.3 29
2019 M 5.2 33
2018 M 4.8 33
2017 M 5.1 33
2016 M 5.4 43
2015 M 5.1 36
2014 M 6.0 44
2013 M 5.6 23
2012 M 5.8 47
2011 M 6.2 51
2010 M 4.7 14
2009 M 5.0 11
2008 M 5.0 34
2007 M 5.9 37
2006 M 5.6 40
2005 M 5.9 44
2004 M 5.8 23
2003 M 5.7 18
2002 M 4.8 15
2001 M 4.9 19
2000 M 6.2 19
1999 M 5.4 10
1998 M 5.6 21
1997 M 5.6 31
1996 M 5.6 30
1995 M 5.3 19
1994 M 5.1 14
1993 M 5.2 9
1992 M 5.8 15
1991 M 5.1 18
1990 M 6.4 23
1989 M 6.1 28
1988 M 5.6 49
1987 M 6.7 24
1986 M 5.1 28
1985 M 5.9 28
1984 M 5.4 19
1983 M 5.9 32
1982 M 5.4 19
1981 M 5.2 12
1980 M 6.2 29
1979 M 5.4 12
1978 M 6.6 24
1977 M 5.4 13
1976 M 5.4 16
1975 M 5.3 12
1974 M 5.6 13
1973 M 5.9 11
1971 M 5.5 1
1968 M 6.1 1
1967 M 5.5 1
1965 M 5.7 3
1964 M 6.0 1
1959 M 5.7 1
1956 M 6.3 2
1952 M 6.0 1
1951 M 6.1 1
1944 M 6.3 1
1938 M 5.5 1
1935 M 6.1 1
1934 M 5.3 1
1931 M 6.5 4
1930 M 6.9 4
1929 M 6.2 1
1928 M 5.6 1
1927 M 5.6 1
1926 M 5.7 1
1924 M 7.0 1
1923 M 8.0 7
1922 M 6.3 1
1921 M 6.4 2
1909 M 5.8 1