Earthquakes by city Japan 100 km

Seismic city profile

Earthquake in Chikuma today

Chikuma, Japan: 347 earthquakes of magnitude 4.0+ detected within 100 km.

Population

59,381

Residents in the indexed city record.

Earthquakes

347

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

Last 12 months

Last nearby event: 2026-05-19 23:11 UTC

Strongest nearby event

M 6.6

Minamiuonuma, Japan

2004-10-23 08:56 UTC

Updated today

Earthquake in Chikuma today

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

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

The strongest earthquake recorded near Chikuma reached magnitude 6.6 on 2004-10-23 08:56 UTC, near Minamiuonuma.

Status today

No earthquake detected today

Strongest today

Was there an earthquake in Chikuma today?

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

When was the last earthquake near Chikuma?

The last nearby earthquake was recorded on 2026-05-19 23:11 UTC.

What is the strongest earthquake recorded near Chikuma?

The strongest earthquake recorded near Chikuma reached magnitude 6.6 on 2004-10-23 08:56 UTC, near Minamiuonuma.

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

76.0 km

Timeline

Recent seismic activity

Latest 7 events shown

UTC	Magnitude	Region	Depth
2026-05-19 23:11	M 4.5	Toyama Japan	262.4 km
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

2026-05 1 events

Historic snapshot

Earthquakes history

Strongest years

2004 M 6.6 max · 37 earthquakes 1941 M 6.3 max · 1 earthquakes 2014 M 6.2 max · 15 earthquakes 2011 M 6.2 max · 29 earthquakes 1984 M 6.2 max · 4 earthquakes

Year	Max magnitude	Earthquakes
2026	M 5.1	5
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