Earthquakes by city Japan 100 km

Seismic city profile

Earthquake in Ryōgoku today

Ryōgoku, Japan: 2750 earthquakes of magnitude 4.0+ detected within 100 km.

Population

49,735

Residents in the indexed city record.

Earthquakes

2750

Earthquakes at M4.0+ nearby.

Max magnitude

7.9

Strongest recorded event in the current radius.

Timezone

Asia/Tokyo

Coordinates 35.717, 140.367

Nearby activity pulse

Last 30 days

Last 12 months

Last nearby event: 2026-08-29 15:17 UTC

Strongest nearby event

M 5.8

Matsudo, Japan

2026-08-22 17:00 UTC

Updated today

Earthquake in Ryōgoku today

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

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

The strongest earthquake recorded near Ryōgoku reached magnitude 5.8 on 2026-08-22 17:00 UTC, near Matsudo.

Status today

No earthquake detected today

Strongest today

Was there an earthquake in Ryōgoku today?

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

When was the last earthquake near Ryōgoku?

The last nearby earthquake was recorded on 2026-08-29 15:17 UTC.

What is the strongest earthquake recorded near Ryōgoku?

The strongest earthquake recorded near Ryōgoku reached magnitude 5.8 on 2026-08-22 17:00 UTC, near Matsudo.

Map

Earthquakes within 100 km of Ryōgoku

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

Average magnitude

4.6

Average depth

54.1 km

Timeline

Recent seismic activity

Latest 25 events shown

UTC	Magnitude	Region	Depth
2026-08-29 15:17	M 4.7	Hasaki Japan	34.8 km
2026-08-22 17:00	M 5.8	Matsudo Japan	61.0 km
2026-07-17 19:45	M 4.4	Kamisu Japan	47.3 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 04:31	M 4.3	Sakura Japan	74.8 km
2026-06-26 04:00	M 4.5	Asahi Japan	54.0 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
2026-06-18 18:43	M 4.2	Isumi Japan	38.6 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
2026-05-23 06:20	M 4.3	Isumi Japan	49.4 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
2026-02-26 11:55	M 4.4	Kamisu Japan	40.8 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
2026-02-05 00:19	M 4.5	Sakura Japan	60.0 km
2026-02-03 18:36	M 4.1	Hasaki Japan	34.9 km

Monthly profile

Recent monthly trend

2026-02 7 events

2026-04 2 events

2026-05 3 events

2026-06 8 events

2026-07 3 events

2026-08 2 events

Historic snapshot

Earthquakes history

Strongest years

2011 M 7.9 max · 401 earthquakes 1987 M 6.7 max · 38 earthquakes 2005 M 6.3 max · 67 earthquakes 1990 M 6.3 max · 37 earthquakes 2000 M 6.2 max · 35 earthquakes

Year	Max magnitude	Earthquakes
2026	M 5.8	33
2025	M 4.9	45
2024	M 5.2	79
2023	M 6.1	79
2022	M 5.1	73
2021	M 5.9	46
2020	M 5.9	66
2019	M 5.2	55
2018	M 5.9	68
2017	M 5.4	66
2016	M 5.4	77
2015	M 5.2	75
2014	M 5.5	91
2013	M 5.6	70
2012	M 6.0	116
2011	M 7.9	401
2010	M 5.1	26
2009	M 5.8	28
2008	M 5.2	63
2007	M 5.2	62
2006	M 5.1	47
2005	M 6.3	67
2004	M 6.0	48
2003	M 5.7	42
2002	M 5.5	25
2001	M 5.2	30
2000	M 6.2	35
1999	M 5.4	21
1998	M 5.7	30
1997	M 5.2	29
1996	M 6.2	32
1995	M 6.0	27
1994	M 5.1	28
1993	M 5.3	13
1992	M 5.8	31
1991	M 6.0	24
1990	M 6.3	37
1989	M 6.1	29
1988	M 5.7	35
1987	M 6.7	38
1986	M 5.3	24
1985	M 5.9	40
1984	M 5.4	33
1983	M 5.9	42
1982	M 5.6	45
1981	M 5.6	25
1980	M 6.0	28
1979	M 5.5	17
1978	M 5.9	28
1977	M 5.5	26
1976	M 5.0	11
1975	M 5.3	25
1974	M 5.8	26
1973	M 5.9	36