Earthquakes by city Japan 100 km

Seismic city profile

Earthquake in Ryōgoku today

Ryōgoku, Japan: 2734 earthquakes of magnitude 4.0+ detected within 100 km.

Population

49,735

Residents in the indexed city record.

Earthquakes

2734

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: 2026-04-05 23:17 UTC

Strongest nearby event

M 7.9

Mito, Japan

2011-03-11 06:15 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 7.9 on 2011-03-11 06:15 UTC, near Mito.

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 2026-04-05 23:17 UTC.

What is the strongest earthquake recorded near Ryōgoku?

The strongest earthquake recorded near Ryōgoku reached magnitude 7.9 on 2011-03-11 06:15 UTC, near Mito.

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
2026-04-05 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
2026-01-30 18:47	M 4.3	Mito Japan	56.9 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
2026-01-25 02:46	M 4.3	Oyama Japan	82.6 km
2026-01-17 16:49	M 4.3	Chiba Japan	72.1 km
2026-01-14 02:50	M 4.3	Hasaki Japan	37.3 km
2026-01-09 11:07	M 4.4	Mobara Japan	28.4 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
2025-11-11 21:50	M 4.2	Mito Japan	68.5 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
2025-10-24 06:47	M 4.6	Chiba Japan	76.7 km

Monthly profile

Recent monthly trend

2025-10 2 events

2025-11 5 events

2025-12 1 events

2026-01 8 events

2026-02 7 events

2026-04 2 events

Historic snapshot

Earthquakes history

Strongest years

2011 M 7.9 max · 401 earthquakes 1923 M 7.9 max · 3 earthquakes 1924 M 7.0 max · 2 earthquakes 1987 M 6.7 max · 38 earthquakes 1911 M 6.6 max · 1 earthquakes

Year	Max magnitude	Earthquakes
2026	M 4.9	17
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
1971	M 5.5	3
1969	M 5.6	1
1968	M 6.1	1
1967	M 5.8	2
1965	M 5.7	3
1963	M 6.3	1
1962	M 5.8	1
1961	M 5.9	1
1956	M 6.3	3
1955	M 5.9	1
1954	M 6.3	1
1952	M 6.0	1
1951	M 6.1	2
1950	M 6.1	1
1948	M 6.3	2
1946	M 6.0	1
1941	M 6.0	1
1940	M 6.2	1
1938	M 6.2	2
1937	M 6.4	1
1935	M 5.7	2
1932	M 6.0	1
1931	M 6.1	2
1930	M 6.2	4
1929	M 6.2	2
1928	M 5.9	2
1926	M 5.7	2
1925	M 5.7	1
1924	M 7.0	2
1923	M 7.9	3
1922	M 6.3	2
1921	M 6.4	2
1911	M 6.6	1
1909	M 5.8	1