Home › 1985 › Japan

M6.5 earthquake, Japan, 1985-08-12

MagnitudeM6.5mw

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.

Depth52 km

Time (UTC)1985-08-12 03:49

Rank in 198540 / 160among M6+

Rank since 19004350 / 14,458

Energy vs an M6×6approx.

75 km ENE of Namie, Japan · 37.77, 141.77

M6.5+ within 300 km (largest first)

2011 M9.1M9.1

1933 M8.4M8.4

1960 M8.0M8.0

2011 M7.9M7.9

1938 M7.8M7.8

1938 M7.7M7.7

1978 M7.7M7.7

2011 M7.7M7.7

1905 M7.7M7.7

1964 M7.6M7.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1982-07-23	1982-07-23 17:54	31 km	88 km ENE of Hasaki, Japan
M7.1 1982-07-23	1982-07-23 14:23	37 km	93 km ENE of Hasaki, Japan
M6.0 1981-10-15	1981-10-15 01:47	47 km	71 km NNE of Miyako, Japan
M6.1 1981-09-25	1981-09-25 15:01	25 km	140 km ESE of ?funato, Japan
M6.4 1981-01-22	1981-01-22 19:34	20 km	122 km E of Ishinomaki, Japan
M6.1 1981-01-19	1981-01-19 01:14	33 km	113 km ESE of ?funato, Japan
M6.9 1981-01-18	1981-01-18 18:17	33 km	101 km ESE of ?funato, Japan
M6.2 1981-01-18	1981-01-18 18:11	33 km	110 km ESE of ?funato, Japan
M6.3 1978-06-14	1978-06-14 11:34	40 km	93 km E of Ishinomaki, Japan
M7.7 1978-06-12	1978-06-12 08:14	44 km	68 km ESE of Ishinomaki, 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.