Earthquakes by city Japan 100 km
Seismic city profile

Iwase

Iwase, Japan: 2401 earthquakes of magnitude 4.0+ detected within 100 km.

Population
39,122
Residents in the indexed city record.
Earthquakes
2401
Earthquakes at M4.0+ nearby.
Max magnitude
7.9
Strongest recorded event in the current radius.
Timezone
Asia/Tokyo
Coordinates 36.350, 140.100
Nearby activity pulse
Last 30 days
1
Last 12 months
49
Last nearby event: 2026-04-01 01:06 UTC
Strongest nearby event
M 7.9
JP
2011-03-11 06:15 UTC

Map

Earthquakes within 100 km of Iwase

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

Average magnitude
4.6
Average depth
58.4 km

Timeline

Recent seismic activity

Latest 25 events shown
UTC Magnitude Region Depth
2026-04-01 01:06 M 4.9
Kashiwa
Japan
57.2 km
2026-03-15 05:06 M 4.9
Maebashi
Japan
95.6 km
2026-02-15 02:52 M 4.1
Ōta
Japan
68.5 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
2026-02-03 09:03 M 4.6
Iwaki
Japan
61.9 km
2026-01-30 18:47 M 4.3
Mito
Japan
56.9 km
2026-01-25 02:46 M 4.3
Oyama
Japan
82.6 km
2026-01-23 21:20 M 4.0
Hitachiomiya
Japan
56.6 km
2026-01-17 16:49 M 4.3
Chiba
Japan
72.1 km
2025-12-29 21:00 M 4.0
Hitachi-ota
Japan
10.0 km
2025-12-12 10:05 M 4.8
Tsukuba
Japan
62.9 km
2025-11-13 21:36 M 4.3
Chiba
Japan
97.4 km
2025-11-11 21:50 M 4.2
Mito
Japan
68.5 km
2025-11-08 21:24 M 4.4
Oyama
Japan
84.1 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
2025-10-26 03:04 M 4.6
Kiryū
Japan
12.4 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
2025-09-19 18:02 M 4.6
Mito
Japan
38.9 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 4 events
2025-12 2 events
2026-01 4 events
2026-02 5 events
2026-03 1 events
2026-04 1 events

Historic snapshot

Earthquakes history

1
1909
2
1921
1
1922
3
1924
1
1928
1
1929
1
1930
3
1931
1
1938
1
1947
2
1948
2
1949
1
1951
1
1955
2
1956
2
1963
1
1964
3
1965
1
1966
1
1967
1
1968
2
1969
2
1971
27
1973
17
1974
23
1975
14
1976
15
1977
23
1978
14
1979
23
1980
19
1981
35
1982
37
1983
31
1984
35
1985
25
1986
27
1987
21
1988
28
1989
27
1990
22
1991
28
1992
13
1993
19
1994
25
1995
25
1996
22
1997
26
1998
16
1999
31
2000
27
2001
18
2002
30
2003
36
2004
62
2005
38
2006
36
2007
46
2008
18
2009
29
2010
434
2011
105
2012
77
2013
87
2014
66
2015
77
2016
75
2017
51
2018
46
2019
50
2020
48
2021
59
2022
62
2023
58
2024
51
2025
11
2026
Year Max magnitude Earthquakes
2026 M 4.9 11
2025 M 4.9 51
2024 M 5.2 58
2023 M 6.1 62
2022 M 5.3 59
2021 M 5.9 48
2020 M 5.8 50
2019 M 5.1 46
2018 M 5.3 51
2017 M 5.4 75
2016 M 5.9 77
2015 M 5.2 66
2014 M 5.5 87
2013 M 5.8 77
2012 M 6.0 105
2011 M 7.9 434
2010 M 5.1 29
2009 M 5.2 18
2008 M 5.2 46
2007 M 5.0 36
2006 M 5.1 38
2005 M 6.3 62
2004 M 6.0 36
2003 M 5.7 30
2002 M 5.6 18
2001 M 5.2 27
2000 M 6.2 31
1999 M 5.4 16
1998 M 5.5 26
1997 M 5.2 22
1996 M 5.5 25
1995 M 5.3 25
1994 M 5.1 19
1993 M 5.3 13
1992 M 5.7 28
1991 M 5.4 22
1990 M 6.3 27
1989 M 6.1 28
1988 M 5.6 21
1987 M 5.1 27
1986 M 6.2 25
1985 M 5.9 35
1984 M 5.4 31
1983 M 5.9 37
1982 M 5.6 35
1981 M 5.2 19
1980 M 5.5 23
1979 M 5.4 14
1978 M 5.7 23
1977 M 5.6 15
1976 M 5.0 14
1975 M 5.3 23
1974 M 6.0 17
1973 M 5.9 27
1971 M 5.5 2
1969 M 5.7 2
1968 M 6.1 1
1967 M 5.5 1
1966 M 5.6 1
1965 M 5.7 3
1964 M 6.2 1
1963 M 6.3 2
1956 M 6.3 2
1955 M 5.9 1
1951 M 5.9 1
1949 M 6.3 2
1948 M 6.3 2
1947 M 5.9 1
1938 M 5.5 1
1931 M 6.5 3
1930 M 6.1 1
1929 M 5.6 1
1928 M 5.6 1
1924 M 7.0 3
1922 M 6.0 1
1921 M 6.4 2
1909 M 5.8 1