Earthquakes by city Japan 100 km

Seismic city profile

Earthquake in Kosai today

Kosai, Japan: 292 earthquakes of magnitude 4.0+ detected within 100 km.

Population

59,770

Residents in the indexed city record.

Earthquakes

292

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

Last 12 months

Last nearby event: 2026-05-21 01:06 UTC

Strongest nearby event

M 7.4

Hamamatsu, Japan

1906-01-21 13:49 UTC

Updated today

Earthquake in Kosai today

No earthquake of magnitude M4.0+ has been detected today within 100 km of Kosai.

2 M4.0+ event(s) have been observed in the last 30 days around Kosai.

The strongest earthquake recorded near Kosai reached magnitude 7.4 on 1906-01-21 13:49 UTC, near Hamamatsu.

Status today

No earthquake detected today

Strongest today

Was there an earthquake in Kosai today?

No earthquake of magnitude M4.0+ has been detected today within 100 km of Kosai.

When was the last earthquake near Kosai?

The last nearby earthquake was recorded on 2026-05-21 01:06 UTC.

What is the strongest earthquake recorded near Kosai?

The strongest earthquake recorded near Kosai reached magnitude 7.4 on 1906-01-21 13:49 UTC, near Hamamatsu.

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

216.5 km

Timeline

Recent seismic activity

Latest 5 events shown

UTC	Magnitude	Region	Depth
2026-05-21 01:06	M 4.1	Hamamatsu Japan	328.9 km
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 2 events

Historic snapshot

Earthquakes history

Strongest years

1906 M 7.4 max · 1 earthquakes 1929 M 6.9 max · 1 earthquakes 1945 M 6.6 max · 2 earthquakes 1944 M 6.4 max · 1 earthquakes 2009 M 6.2 max · 5 earthquakes

Year	Max magnitude	Earthquakes
2026	M 4.4	2
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