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M6.6 earthquake, Japan, 1931-01-15

MagnitudeM6.6mw

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Depth35 km

Time (UTC)1931-01-15 21:01

Rank in 193131 / 124among M6+

Rank since 19003924 / 14,458

Energy vs an M6×7approx.

230 km NNW of Nago, Japan · 28.53, 127.07

M6.5+ within 300 km (largest first)

1911 M7.9M7.9

1938 M7.6M7.6

1901 M7.2M7.2

1914 M7.0M7.0

1911 M7.0M7.0

1923 M7.0M7.0

2011 M6.9M6.9

2009 M6.8M6.8

1926 M6.8M6.8

1965 M6.7M6.7

1968 M6.7M6.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.3 1929-06-01	1929-06-01 17:58	25 km	118 km E of Nago, Japan
M6.3 1929-02-03	1929-02-03 02:44	35 km	Ryukyu Islands, Japan
M6.5 1928-10-20	1928-10-20 12:46	35 km	84 km NNE of Naze, Japan
M6.1 1926-08-06	1926-08-06 06:00	35 km	39 km SW of Itoman, Japan
M6.8 1926-06-29	1926-06-29 14:26	15 km	100 km WNW of Nago, Japan
M6.1 1926-03-17	1926-03-17 04:36	35 km	106 km SW of Kurio, Japan
M6.6 1925-06-28	1925-06-28 06:14	35 km	68 km ENE of Naze, Japan
M7.0 1923-11-03	1923-11-03 16:19	35 km	93 km NNE of Naze, Japan
M7.0 1923-04-23	1923-04-23 03:17	20 km	70 km WNW of Naha, Japan
M6.2 1921-07-04	1921-07-04 14:18	35 km	76 km NNE of Naze, 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.