Home › 1978 › Japan

M7.7 earthquake, Japan, 1978-06-12

MagnitudeM7.7ms

This page is updated only once a day and is not an alert service. For current earthquake and tsunami information, check the Japan Meteorological Agency, the USGS and your local authorities.

Depth44 km

Time (UTC)1978-06-12 08:14

Rank in 19781 / 90among M6+

Rank since 1900263 / 14,458

Energy vs an M6×355approx.

68 km ESE of Ishinomaki, Japan · 38.19, 142.03

M6.5+ within 300 km (largest first)

2011 M9.1M9.1

1933 M8.4M8.4

1960 M8.0M8.0

1931 M7.9M7.9

2011 M7.9M7.9

1938 M7.8M7.8

1994 M7.8M7.8

1938 M7.7M7.7

2011 M7.7M7.7

1978 M7.7M7.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.1 1978-02-20	1978-02-20 04:36	60 km	37 km SSE of ?funato, Japan
M6.0 1977-12-23	1977-12-23 21:14	41 km	104 km ESE of ?tsuchi, Japan
M6.0 1976-11-08	1976-11-08 08:19	38 km	89 km ESE of Ishinomaki, Japan
M6.1 1975-06-14	1975-06-14 23:36	19 km	241 km ENE of Hasaki, Japan
M6.0 1974-10-12	1974-10-12 06:14	24 km	168 km NE of Miyako, Japan
M6.0 1974-07-08	1974-07-08 05:45	35 km	45 km ESE of Hitachi, Japan
M6.1 1973-11-19	1973-11-19 13:01	56 km	24 km SE of ?funato, Japan
M6.2 1972-03-19	1972-03-19 15:57	71 km	53 km ENE of Misawa, Japan
M6.3 1971-09-24	1971-09-24 01:10	21 km	119 km E of Yamada, Japan
M6.0 1971-09-15	1971-09-15 14:55	24 km	137 km ESE of Yamada, 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.