Earthquakes by city Japan 100 km

Seismic city profile

Earthquake in Iwatsuki today

Iwatsuki, Japan: 1685 earthquakes of magnitude 4.0+ detected within 100 km.

Population

108,833

Residents in the indexed city record.

Earthquakes

1685

Earthquakes at M4.0+ nearby.

Max magnitude

8.0

Strongest recorded event in the current radius.

Timezone

Asia/Tokyo

Coordinates 35.965, 139.696

Nearby activity pulse

Last 30 days

Last 12 months

Last nearby event: 2026-10-21 01:04 UTC

Strongest nearby event

M 8.0

Fujisawa, Japan

1923-09-01 02:58 UTC

Updated today

Earthquake in Iwatsuki today

1 earthquake(s) of magnitude M4.0+ have been detected today within 100 km of Iwatsuki. The most recent reached M4.5 at 01:04 UTC near Chiba.

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

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

Status today

1 earthquake(s) today

Strongest today

M 4.5

Was there an earthquake in Iwatsuki today?

1 earthquake(s) of magnitude M4.0+ have been detected today within 100 km of Iwatsuki. The most recent reached M4.5 at 01:04 UTC near Chiba.

When was the last earthquake near Iwatsuki?

The last nearby earthquake was recorded on 2026-10-21 01:04 UTC.

What is the strongest earthquake recorded near Iwatsuki?

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

Map

Earthquakes within 100 km of Iwatsuki

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

Average magnitude

4.6

Average depth

67.9 km

Timeline

Recent seismic activity

Latest 25 events shown

UTC	Magnitude	Region	Depth
2026-10-21 01:04	M 4.5	Chiba Japan	90.3 km
2026-10-01 12:27	M 5.3	Narita Japan	41.6 km
2026-09-28 19:45	M 4.9	Saitama Japan	71.0 km
2026-09-16 15:07	M 5.0	Kashiwa Japan	77.3 km
2026-08-22 17:00	M 5.8	Matsudo Japan	61.0 km
2026-07-16 00:01	M 4.7	Narita Japan	59.7 km
2026-07-02 07:17	M 4.3	Kamisu Japan	52.2 km
2026-06-26 18:59	M 4.2	Chiba Japan	74.2 km
2026-06-26 13:29	M 5.2	Sagamihara Japan	43.2 km
2026-06-26 04:31	M 4.3	Sakura Japan	74.8 km
2026-06-26 03:46	M 5.8	Kamisu Japan	43.0 km
2026-06-26 02:48	M 4.3	Saitama Japan	53.9 km
2026-06-16 10:55	M 4.4	Matsudo Japan	42.4 km
2026-06-16 10:46	M 5.3	Kasukabe Japan	63.6 km
2026-05-24 18:00	M 4.0	Aihara Japan	148.1 km
2026-05-22 12:39	M 4.1	Mito Japan	102.4 km
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
2026-03-15 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
2026-01-30 18:47	M 4.3	Mito Japan	56.9 km
2026-01-25 02:46	M 4.3	Oyama Japan	82.6 km

Monthly profile

Recent monthly trend

2026-01 2 events

2026-02 4 events

2026-03 1 events

2026-04 2 events

2026-05 2 events

2026-06 7 events

2026-07 2 events

2026-08 1 events

2026-09 2 events

2026-10 2 events

Historic snapshot

Earthquakes history

Strongest years

1987 M 6.7 max · 26 earthquakes 1990 M 6.3 max · 27 earthquakes 2011 M 6.2 max · 91 earthquakes 2000 M 6.2 max · 23 earthquakes 2023 M 6.1 max · 51 earthquakes

Year	Max magnitude	Earthquakes
2026	M 5.8	26
2025	M 4.9	42
2024	M 5.2	58
2023	M 6.1	51
2022	M 5.0	52
2021	M 5.9	39
2020	M 5.3	40
2019	M 5.1	31
2018	M 5.3	31
2017	M 5.1	46
2016	M 5.4	58
2015	M 5.2	53
2014	M 5.5	51
2013	M 5.6	36
2012	M 6.0	60
2011	M 6.2	91
2010	M 5.1	18
2009	M 5.1	16
2008	M 5.2	42
2007	M 5.2	39
2006	M 5.1	37
2005	M 5.9	57
2004	M 5.8	32
2003	M 5.4	24
2002	M 4.9	20
2001	M 5.0	25
2000	M 6.2	23
1999	M 5.4	17
1998	M 5.7	20
1997	M 5.2	22
1996	M 5.6	29
1995	M 5.3	23
1994	M 5.1	16
1993	M 5.2	7
1992	M 5.8	22
1991	M 5.1	18
1990	M 6.3	27
1989	M 6.1	21
1988	M 5.6	24
1987	M 6.7	26
1986	M 5.1	16
1985	M 5.9	34
1984	M 5.4	25
1983	M 5.9	35
1982	M 5.6	23
1981	M 5.2	14
1980	M 6.0	23
1979	M 5.4	10
1978	M 5.7	15
1977	M 5.4	16
1976	M 5.4	15
1975	M 5.3	21
1974	M 5.6	11
1973	M 5.9	20