Earthquakes by city Japan 100 km

Seismic city profile

Earthquake in Iruma today

Iruma, Japan: 1330 earthquakes of magnitude 4.0+ detected within 100 km.

Population

147,166

Residents in the indexed city record.

Earthquakes

1330

Earthquakes at M4.0+ nearby.

Max magnitude

8.0

Strongest recorded event in the current radius.

Timezone

Asia/Tokyo

Coordinates 35.818, 139.368

Nearby activity pulse

Last 30 days

Last 12 months

Last nearby event: 2026-04-05 23:17 UTC

Strongest nearby event

M 8.0

Fujisawa, Japan

1923-09-01 02:58 UTC

Updated today

Earthquake in Iruma today

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

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

The strongest earthquake recorded near Iruma reached magnitude 8.0 on 1923-09-01 02:58 UTC, near Fujisawa.

Status today

No earthquake detected today

Strongest today

Was there an earthquake in Iruma today?

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

When was the last earthquake near Iruma?

The last nearby earthquake was recorded on 2026-04-05 23:17 UTC.

What is the strongest earthquake recorded near Iruma?

The strongest earthquake recorded near Iruma reached magnitude 8.0 on 1923-09-01 02:58 UTC, near Fujisawa.

Map

Earthquakes within 100 km of Iruma

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

Average magnitude

4.6

Average depth

70.9 km

Timeline

Recent seismic activity

Latest 25 events shown

UTC	Magnitude	Region	Depth
2026-04-05 23:17	M 4.0	Tokyo Japan	138.6 km
2026-04-01 01:06	M 4.9	Kashiwa Japan	57.2 km
2026-03-28 10:36	M 4.1	Fujisawa Japan	74.4 km
2026-03-15 05:06	M 4.9	Maebashi Japan	95.6 km
2026-02-15 02:52	M 4.1	Ōta Japan	68.5 km
2026-02-09 12:27	M 4.3	Ōta Japan	104.2 km
2026-02-06 15:58	M 4.2	Saitama Japan	95.2 km
2026-02-05 00:19	M 4.5	Sakura Japan	60.0 km
2026-01-25 02:46	M 4.3	Oyama Japan	82.6 km
2026-01-17 16:49	M 4.3	Chiba Japan	72.1 km
2025-12-12 10:05	M 4.8	Tsukuba Japan	62.9 km
2025-11-16 07:03	M 4.2	Mobara Japan	68.9 km
2025-11-13 21:36	M 4.3	Chiba Japan	97.4 km
2025-11-08 21:24	M 4.4	Oyama Japan	84.1 km
2025-11-04 05:00	M 4.2	Tsukuba Japan	83.6 km
2025-10-26 13:34	M 4.6	Chiba Japan	85.4 km
2025-10-26 03:04	M 4.6	Kiryū Japan	12.4 km
2025-10-24 06:47	M 4.6	Chiba Japan	76.7 km
2025-10-03 03:48	M 4.5	Kawasaki Japan	106.4 km
2025-09-08 23:53	M 4.3	Chiba Japan	66.6 km
2025-09-05 12:00	M 4.2	Saitama Japan	70.0 km
2025-08-31 21:53	M 4.4	Chiba Japan	51.8 km
2025-08-28 01:06	M 4.3	Yachiyo Japan	50.6 km
2025-08-23 10:22	M 4.1	Chichibu Japan	129.5 km
2025-08-01 13:58	M 4.4	Ōta Japan	116.0 km

Monthly profile

Recent monthly trend

2025-08 4 events

2025-09 2 events

2025-10 4 events

2025-11 4 events

2025-12 1 events

2026-01 2 events

2026-02 4 events

2026-03 2 events

2026-04 2 events

Historic snapshot

Earthquakes history

Strongest years

1923 M 8.0 max · 4 earthquakes 1924 M 7.0 max · 1 earthquakes 1930 M 6.9 max · 2 earthquakes 1987 M 6.7 max · 22 earthquakes 1931 M 6.5 max · 4 earthquakes

Year	Max magnitude	Earthquakes
2026	M 4.9	10
2025	M 4.8	36
2024	M 5.2	46
2023	M 4.9	34
2022	M 5.0	39
2021	M 5.9	34
2020	M 5.3	29
2019	M 5.0	28
2018	M 4.8	25
2017	M 5.1	36
2016	M 5.4	47
2015	M 5.1	43
2014	M 5.5	40
2013	M 5.6	25
2012	M 5.8	44
2011	M 6.2	59
2010	M 5.1	15
2009	M 5.1	13
2008	M 4.9	31
2007	M 5.2	31
2006	M 5.1	38
2005	M 5.9	44
2004	M 5.8	19
2003	M 5.3	15
2002	M 4.9	14
2001	M 4.9	19
2000	M 4.9	17
1999	M 5.4	12
1998	M 5.4	15
1997	M 5.2	23
1996	M 5.6	25
1995	M 5.3	20
1994	M 5.1	14
1993	M 5.2	8
1992	M 5.8	16
1991	M 5.1	19
1990	M 6.3	18
1989	M 5.6	23
1988	M 5.6	24
1987	M 6.7	22
1986	M 4.7	12
1985	M 5.9	28
1984	M 5.4	24
1983	M 5.9	28
1982	M 4.9	14
1981	M 5.2	12
1980	M 6.0	22
1979	M 5.4	10
1978	M 5.7	12
1977	M 5.4	13
1976	M 5.4	14
1975	M 5.3	19
1974	M 5.6	9
1973	M 5.1	14
1971	M 5.5	1
1968	M 6.1	1
1967	M 5.5	1
1965	M 5.7	3
1959	M 5.7	1
1956	M 6.3	2
1952	M 6.0	1
1938	M 5.5	1
1931	M 6.5	4
1930	M 6.9	2
1929	M 6.2	1
1928	M 5.6	1
1927	M 5.6	1
1924	M 7.0	1
1923	M 8.0	4
1922	M 6.3	1
1921	M 6.4	2
1909	M 5.8	1