Earthquakes by city Japan 100 km

Seismic city profile

Ryūgasaki

Ryūgasaki, Japan: 2539 earthquakes of magnitude 4.0+ detected within 100 km.

Population

85,761

Residents in the indexed city record.

Earthquakes

2539

Earthquakes at M4.0+ nearby.

Max magnitude

7.9

Strongest recorded event in the current radius.

Timezone

Asia/Tokyo

Coordinates 35.900, 140.183

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

Map

Earthquakes within 100 km of Ryūgasaki

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

Average magnitude

4.6

Average depth

57.2 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
2026-03-15 05:06	M 4.9	Maebashi Japan	95.6 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 01:40	M 4.4	Tateyama Japan	40.2 km
2026-01-25 02:46	M 4.3	Oyama Japan	82.6 km
2026-01-23 21:20	M 4.0	Hitachiomiya Japan	56.6 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
2025-12-29 21:00	M 4.0	Hitachi-ota Japan	10.0 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 2 events

2026-01 7 events

2026-02 6 events

2026-03 1 events

2026-04 2 events

Historic snapshot

Earthquakes history

Strongest years

2011 M 7.9 max · 350 earthquakes 1924 M 7.0 max · 3 earthquakes 1987 M 6.7 max · 32 earthquakes 1923 M 6.7 max · 1 earthquakes 1931 M 6.5 max · 3 earthquakes

Year	Max magnitude	Earthquakes
2026	M 4.9	16
2025	M 4.9	49
2024	M 5.2	77
2023	M 6.1	68
2022	M 5.1	74
2021	M 5.9	42
2020	M 5.9	60
2019	M 5.1	51
2018	M 5.9	60
2017	M 5.4	64
2016	M 5.4	78
2015	M 5.2	71
2014	M 5.5	81
2013	M 5.6	68
2012	M 6.0	111
2011	M 7.9	350
2010	M 5.1	25
2009	M 5.8	29
2008	M 5.2	56
2007	M 5.2	55
2006	M 5.1	46
2005	M 6.3	70
2004	M 6.0	38
2003	M 5.7	36
2002	M 5.5	24
2001	M 5.2	29
2000	M 6.2	32
1999	M 5.4	19
1998	M 5.7	29
1997	M 5.2	30
1996	M 6.2	30
1995	M 5.3	26
1994	M 5.1	27
1993	M 5.3	12
1992	M 5.3	32
1991	M 6.0	22
1990	M 6.3	33
1989	M 6.1	29
1988	M 5.7	33
1987	M 6.7	32
1986	M 5.3	22
1985	M 5.9	38
1984	M 5.4	35
1983	M 5.9	43
1982	M 5.6	37
1981	M 5.5	20
1980	M 6.0	28
1979	M 5.4	17
1978	M 5.7	23
1977	M 5.4	23
1976	M 5.0	12
1975	M 5.3	26
1974	M 5.8	21
1973	M 5.9	28
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
1964	M 6.2	1
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
1949	M 6.3	1
1948	M 6.3	2
1946	M 6.0	1
1941	M 6.0	1
1938	M 5.5	1
1935	M 5.7	1
1932	M 6.0	1
1931	M 6.5	3
1930	M 6.2	4
1929	M 6.2	1
1928	M 5.9	2
1926	M 5.7	2
1924	M 7.0	3
1923	M 6.7	1
1922	M 6.3	2
1921	M 6.4	2
1909	M 5.8	1