Earthquakes by city Japan 100 km

Seismic city profile

Isehara

Isehara, Japan: 1334 earthquakes of magnitude 4.0+ detected within 100 km.

Population

103,401

Residents in the indexed city record.

Earthquakes

1334

Earthquakes at M4.0+ nearby.

Max magnitude

8.0

Strongest recorded event in the current radius.

Timezone

Asia/Tokyo

Coordinates 35.399, 139.310

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

Map

Earthquakes within 100 km of Isehara

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

Average magnitude

4.6

Average depth

64.3 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
2026-03-16 11:37	M 4.5	Itō Japan	143.1 km
2026-02-19 08:24	M 4.4	Isumi Japan	10.0 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
2026-01-29 02:47	M 4.0	Tateyama Japan	26.6 km
2026-01-29 01:40	M 4.4	Tateyama Japan	40.2 km
2026-01-29 01:25	M 4.4	Tateyama Japan	19.8 km
2026-01-17 16:49	M 4.3	Chiba Japan	72.1 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
2025-11-04 05:00	M 4.2	Tsukuba Japan	83.6 km
2025-10-26 13:34	M 4.6	Chiba Japan	85.4 km
2025-10-24 06:47	M 4.6	Chiba Japan	76.7 km
2025-10-03 03:48	M 4.5	Kawasaki Japan	106.4 km
2025-10-03 03:37	M 4.4	Tateyama Japan	52.0 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
2025-08-23 10:22	M 4.1	Chichibu Japan	129.5 km
2025-08-10 11:08	M 4.2	Fujisawa Japan	10.0 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 3 events

2026-01 4 events

2026-02 4 events

2026-03 2 events

2026-04 2 events

Historic snapshot

Earthquakes history

Strongest years

1923 M 8.0 max · 7 earthquakes 1924 M 7.0 max · 1 earthquakes 1930 M 6.9 max · 4 earthquakes 1987 M 6.7 max · 21 earthquakes 1978 M 6.6 max · 23 earthquakes

Year	Max magnitude	Earthquakes
2026	M 4.9	12
2025	M 4.6	30
2024	M 5.2	45
2023	M 5.2	32
2022	M 5.0	37
2021	M 5.9	25
2020	M 5.3	28
2019	M 5.2	33
2018	M 4.8	29
2017	M 5.1	31
2016	M 5.4	38
2015	M 5.1	35
2014	M 6.0	39
2013	M 5.6	20
2012	M 5.8	43
2011	M 6.2	46
2010	M 4.7	13
2009	M 5.0	12
2008	M 4.9	30
2007	M 5.9	35
2006	M 5.6	39
2005	M 5.9	38
2004	M 5.8	19
2003	M 5.7	17
2002	M 4.8	15
2001	M 4.9	16
2000	M 4.8	16
1999	M 5.4	10
1998	M 5.6	20
1997	M 5.6	30
1996	M 5.6	28
1995	M 5.3	18
1994	M 5.1	12
1993	M 5.2	9
1992	M 5.8	15
1991	M 5.1	17
1990	M 6.4	21
1989	M 5.6	24
1988	M 5.6	49
1987	M 6.7	21
1986	M 5.1	26
1985	M 5.9	26
1984	M 5.4	19
1983	M 5.9	27
1982	M 5.4	16
1981	M 5.2	13
1980	M 6.2	29
1979	M 4.8	11
1978	M 6.6	23
1977	M 5.4	11
1976	M 5.4	16
1975	M 5.3	12
1974	M 5.6	13
1973	M 5.0	9
1971	M 5.5	1
1968	M 6.1	1
1967	M 5.5	1
1965	M 5.7	3
1964	M 6.0	1
1959	M 5.7	1
1956	M 6.3	2
1952	M 6.0	1
1951	M 6.1	1
1944	M 6.3	1
1935	M 6.1	1
1934	M 5.3	1
1931	M 6.5	4
1930	M 6.9	4
1929	M 6.2	1
1927	M 5.6	1
1924	M 7.0	1
1923	M 8.0	7
1922	M 6.3	1
1921	M 6.0	1
1909	M 5.8	1