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M6.8 earthquake, Japan, 1964-06-23

MagnitudeM6.8mw

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Depth60 km

Time (UTC)1964-06-23 01:26

Rank in 196419 / 144among M6+

Rank since 19002270 / 14,458

Energy vs an M6×16approx.

49 km ESE of Nemuro, Japan · 43.23, 146.18

M6.5+ within 300 km (largest first)

1958 M8.3M8.3

1994 M8.3M8.3

1969 M8.2M8.2

2003 M8.2M8.2

1952 M8.1M8.1

1995 M7.9M7.9

1919 M7.7M7.7

1973 M7.7M7.7

1993 M7.6M7.6

1978 M7.6M7.6

1978 M7.5M7.5

1935 M7.5M7.5

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.8 1964-05-31	1964-05-31 00:40	50 km	39 km SE of Shikotan, Russia
M6.1 1964-03-16	1964-03-16 08:44	142 km	83 km NNE of Shikotan, Russia
M6.2 1963-11-15	1963-11-15 21:06	28 km	137 km SE of Kuril’sk, Russia
M6.5 1963-11-10	1963-11-10 17:17	21 km	154 km SE of Kuril’sk, Russia
M6.2 1963-10-17	1963-10-17 23:24	52 km	116 km SE of Kuril’sk, Russia
M7.0 1963-10-12	1963-10-12 11:27	38 km	124 km ESE of Kuril’sk, Russia
M6.1 1963-03-30	1963-03-30 16:52	59 km	112 km ENE of Shikotan, Russia
M6.0 1962-07-17	1962-07-17 17:20	50 km	52 km ESE of Kushiro, Japan
M6.5 1962-05-07	1962-05-07 17:39	25 km	76 km W of Kuril’sk, Russia
M7.1 1962-04-23	1962-04-23 05:58	60 km	62 km SE of Obihiro, Japan

Energy ratio uses the rule that one magnitude unit is about 32 times the energy. Magnitudes and locations are USGS values and can differ from national agencies. Older records are less complete and less precise.