Earthquakes by city Japan 100 km

Seismic city profile

Earthquake in Ryūgasaki today

Ryūgasaki, Japan: 2555 earthquakes of magnitude 4.0+ detected within 100 km.

Population

85,761

Residents in the indexed city record.

Earthquakes

2555

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: 2026-08-22 17:00 UTC

Strongest nearby event

M 7.9

Mito, Japan

2011-03-11 06:15 UTC

Updated today

Earthquake in Ryūgasaki today

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

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

The strongest earthquake recorded near Ryūgasaki 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 Ryūgasaki today?

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

When was the last earthquake near Ryūgasaki?

The last nearby earthquake was recorded on 2026-08-22 17:00 UTC.

What is the strongest earthquake recorded near Ryūgasaki?

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

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
2026-08-22 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
2026-05-24 06:08	M 4.2	Hitachi Japan	65.5 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
2026-03-15 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

Monthly profile

Recent monthly trend

2026-02 6 events

2026-03 1 events

2026-04 2 events

2026-05 4 events

2026-06 8 events

2026-07 3 events

2026-08 1 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 5.8	32
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