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M7.9 earthquake, Japan, 1931-03-09

MagnitudeM7.9mw

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.

Depth35 km

Time (UTC)1931-03-09 03:49

Rank in 19312 / 124among M6+

Rank since 1900111 / 14,458

Energy vs an M6×759approx.

78 km E of Hachinohe, Japan · 40.59, 142.42

M6.5+ within 300 km (largest first)

2011 M9.1M9.1

1933 M8.4M8.4

1968 M8.2M8.2

2003 M8.2M8.2

1952 M8.1M8.1

1960 M8.0M8.0

1931 M7.9M7.9

1968 M7.9M7.9

1994 M7.8M7.8

1919 M7.7M7.7

1978 M7.7M7.7

1905 M7.7M7.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.3 1931-02-16	1931-02-16 18:48	25 km	53 km E of Shizunai-furukawach?, Japan
M6.4 1929-08-28	1929-08-28 18:51	15 km	172 km ENE of Miyako, Japan
M6.1 1929-05-31	1929-05-31 00:10	35 km	75 km SE of Shizunai-furukawach?, Japan
M6.8 1928-06-01	1928-06-01 13:12	20 km	117 km E of Yamada, Japan
M6.1 1928-06-01	1928-06-01 12:23	35 km	151 km E of Miyako, Japan
M6.1 1928-05-31	1928-05-31 07:25	35 km	133 km E of Yamada, Japan
M6.5 1928-05-28	1928-05-28 15:35	35 km	118 km E of Yamada, Japan
M7.3 1928-05-27	1928-05-27 09:50	35 km	79 km ENE of Miyako, Japan
M6.2 1927-09-30	1927-09-30 07:38	35 km	near the east coast of Honshu, Japan
M6.0 1927-08-29	1927-08-29 07:41	35 km	161 km S of Kushiro, 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.