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M6.6 earthquake, Japan, 1906-04-08

MagnitudeM6.6mw

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Depth35 km

Time (UTC)1906-04-08 17:37

Rank in 190641 / 78among M6+

Rank since 19003359 / 14,458

Energy vs an M6×8approx.

132 km ESE of Iwaki, Japan · 36.72, 142.32

M6.5+ within 300 km (largest first)

2011 M9.1M9.1

2011 M7.9M7.9

1923 M7.8M7.8

1938 M7.8M7.8

1938 M7.7M7.7

1978 M7.7M7.7

2011 M7.7M7.7

1905 M7.7M7.7

1915 M7.6M7.6

1938 M7.6M7.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1906-02-24	1906-02-24 00:13	15 km	116 km ESE of Katsuura, Japan
M7.7 1905-07-06	1905-07-06 16:20	15 km	217 km ESE of Kamaishi, Japan
M7.0 1902-05-02	1902-05-02 11:31	35 km	Off the east coast of Honshu, Japan
M7.0 1901-06-15	1901-06-15 09:34	35 km	Near the east coast of Honshu, Japan
M7.0 1900-05-11	1900-05-11 17:23	5 km	Northern Honshu, 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.