Earthquakes by city Japan 100 km

Seismic city profile

Earthquake in Nagano today

Nagano, Japan: 386 earthquakes of magnitude 4.0+ detected within 100 km.

Population

372,760

Residents in the indexed city record.

Earthquakes

386

Earthquakes at M4.0+ nearby.

Max magnitude

6.6

Strongest recorded event in the current radius.

Timezone

Asia/Tokyo

Coordinates 36.650, 138.183

Nearby activity pulse

Last 30 days

Last 12 months

Last nearby event: 2026-05-31 20:54 UTC

Strongest nearby event

M 6.6

Minamiuonuma, Japan

2004-10-23 08:56 UTC

Updated today

Earthquake in Nagano today

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

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

The strongest earthquake recorded near Nagano 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 Nagano today?

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

When was the last earthquake near Nagano?

The last nearby earthquake was recorded on 2026-05-31 20:54 UTC.

What is the strongest earthquake recorded near Nagano?

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

Map

Earthquakes within 100 km of Nagano

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

Average magnitude

4.6

Average depth

62.8 km

Timeline

Recent seismic activity

Latest 6 events shown

UTC	Magnitude	Region	Depth
2026-05-31 20:54	M 4.4	Jōetsu Japan	25.2 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

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 · 77 earthquakes 1941 M 6.3 max · 1 earthquakes 2014 M 6.2 max · 16 earthquakes 2011 M 6.2 max · 29 earthquakes 1918 M 6.1 max · 1 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	6
2021	M 5.1	8
2020	M 5.2	15
2019	M 4.6	3
2018	M 5.1	4
2017	M 5.1	4
2016	M 4.9	8
2015	M 4.9	7
2014	M 6.2	16
2013	M 5.8	8
2012	M 4.8	6
2011	M 6.2	29
2010	M 4.6	4
2009	M 4.6	2
2008	M 4.4	6
2007	M 5.7	10
2006	M 4.3	4
2005	M 4.9	15
2004	M 6.6	77
2003	M 4.4	4
2002	M 4.7	7
2001	M 5.3	8
2000	M 4.4	4
1999	M 4.9	1
1998	M 5.5	15
1997	M 4.2	3
1996	M 4.7	3
1995	M 4.5	4
1993	M 4.8	7
1992	M 4.5	1
1991	M 5.2	4
1990	M 5.3	21
1989	M 4.7	1
1988	M 4.7	3
1987	M 5.7	8
1986	M 5.6	6
1984	M 4.9	2
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	4
1975	M 4.9	1
1973	M 4.4	1
1971	M 5.7	2
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
1933	M 6.0	1
1918	M 6.1	1