Earthquakes by city Japan 100 km
Seismic city profile

Kosai

Kosai, Japan: 291 earthquakes of magnitude 4.0+ detected within 100 km.

Population
59,770
Residents in the indexed city record.
Earthquakes
291
Earthquakes at M4.0+ nearby.
Max magnitude
7.4
Strongest recorded event in the current radius.
Timezone
Asia/Tokyo
Coordinates 34.701, 137.523
Nearby activity pulse
Last 30 days
1
Last 12 months
4
Last nearby event: 2026-05-08 03:36 UTC
Strongest nearby event
M 7.4
JP
1906-01-21 13:49 UTC

Map

Earthquakes within 100 km of Kosai

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

Average magnitude
4.5
Average depth
216.1 km

Timeline

Recent seismic activity

Latest 4 events shown
UTC Magnitude Region Depth
2026-05-08 03:36 M 4.4
Fujieda
Japan
27.9 km
2025-09-13 20:00 M 4.1
Shima
Japan
333.7 km
2025-08-17 23:33 M 4.8
Hamamatsu
Japan
10.0 km
2025-07-31 23:24 M 4.8
Ise
Japan
337.2 km

Monthly profile

Recent monthly trend

2025-07 1 events
2025-08 1 events
2025-09 1 events
2026-05 1 events

Historic snapshot

Earthquakes history

Year Max magnitude Earthquakes
2026 M 4.4 1
2025 M 4.8 5
2024 M 4.7 6
2023 M 4.6 6
2022 M 5.3 9
2021 M 5.2 5
2020 M 4.9 7
2019 M 4.5 9
2018 M 4.8 9
2017 M 4.4 6
2016 M 4.7 8
2015 M 4.5 11
2014 M 4.5 7
2013 M 5.6 5
2012 M 4.7 1
2011 M 5.9 6
2010 M 4.3 1
2009 M 6.2 5
2008 M 4.7 9
2007 M 5.1 6
2006 M 4.5 8
2005 M 5.2 13
2004 M 5.3 6
2003 M 5.5 18
2002 M 4.8 5
2001 M 5.4 8
2000 M 4.6 5
1999 M 4.8 8
1998 M 4.5 5
1997 M 5.8 8
1996 M 5.2 7
1995 M 6.0 6
1994 M 4.9 4
1993 M 4.5 3
1991 M 4.7 2
1990 M 4.9 2
1989 M 4.8 2
1988 M 4.6 2
1987 M 4.6 2
1986 M 4.7 4
1985 M 4.8 5
1984 M 5.4 2
1983 M 5.3 2
1982 M 4.5 2
1981 M 4.8 4
1980 M 4.3 3
1979 M 4.8 6
1978 M 4.0 1
1977 M 4.6 2
1976 M 5.0 3
1975 M 4.9 3
1974 M 5.0 7
1973 M 4.0 1
1972 M 5.7 1
1971 M 5.9 1
1968 M 5.8 1
1965 M 6.1 1
1945 M 6.6 2
1944 M 6.4 1
1935 M 6.1 1
1929 M 6.9 1
1906 M 7.4 1