Itoigawa

Itoigawa, Japan: 562 earthquakes of magnitude 4.0+ detected within 100 km.

Population

40,765

Residents in the indexed city record.

Earthquakes

562

Earthquakes at M4.0+ nearby.

Max magnitude

7.5

Strongest recorded event in the current radius.

Timezone

Asia/Tokyo

Coordinates 37.033, 137.850

Nearby activity pulse

Last 30 days

Last 12 months

Last nearby event: 2026-04-18 05:54 UTC

Strongest nearby event

M 7.5

Toyama, Japan

2024-01-01 07:10 UTC

Map

Earthquakes within 100 km of Itoigawa

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

Average magnitude

4.6

Average depth

43.1 km

Timeline

Recent seismic activity

Latest 8 events shown

UTC	Magnitude	Region	Depth
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
2026-04-12 23:54	M 4.4	Toyama Japan	10.0 km
2026-02-23 23:03	M 4.8	Himimachi Japan	259.4 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
2026-01-12 20:09	M 4.4	Nanao Japan	11.2 km
2025-09-07 23:24	M 4.5	Nanao Japan	10.3 km

Monthly profile

Recent monthly trend

2025-09 1 events

2026-01 3 events

2026-02 1 events

2026-04 3 events

Historic snapshot

Earthquakes history

Strongest years

2024 M 7.5 max · 129 earthquakes 2007 M 6.6 max · 18 earthquakes 2004 M 6.6 max · 83 earthquakes 1993 M 6.6 max · 29 earthquakes 1941 M 6.3 max · 1 earthquakes

Year	Max magnitude	Earthquakes
2026	M 5.1	7
2025	M 4.8	5
2024	M 7.5	129
2023	M 6.2	17
2022	M 5.1	17
2021	M 5.1	8
2020	M 5.3	17
2019	M 4.6	2
2018	M 5.1	3
2017	M 5.1	4
2016	M 4.9	8
2015	M 4.8	7
2014	M 6.2	15
2013	M 4.6	4
2012	M 5.4	6
2011	M 6.2	28
2010	M 4.6	4
2009	M 4.6	1
2008	M 4.4	4
2007	M 6.6	18
2006	M 4.5	4
2005	M 4.9	16
2004	M 6.6	83
2003	M 5.1	4
2002	M 4.7	6
2001	M 5.3	5
2000	M 4.4	5
1999	M 4.9	1
1998	M 5.5	16
1997	M 4.0	1
1996	M 4.7	2
1995	M 4.7	5
1994	M 4.8	3
1993	M 6.6	29
1992	M 4.5	1
1991	M 5.2	3
1990	M 5.4	19
1989	M 5.3	1
1988	M 4.7	1
1987	M 5.7	8
1986	M 5.6	5
1985	M 4.2	1
1984	M 4.7	1
1983	M 5.1	2
1982	M 4.5	1
1981	M 5.4	4
1979	M 4.3	1
1978	M 4.3	1
1977	M 5.4	2
1976	M 4.8	4
1975	M 4.9	1
1973	M 4.9	4
1971	M 5.7	2
1970	M 5.5	1
1968	M 5.6	1
1967	M 5.7	2
1966	M 5.8	8
1941	M 6.3	1
1934	M 5.7	1
1933	M 6.0	1
1918	M 6.1	1