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M6.6 earthquake, Japan, 1909-03-22

MagnitudeM6.6mw

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Depth15 km

Time (UTC)1909-03-22 20:03

Rank in 190931 / 44among M6+

Rank since 19003822 / 14,458

Energy vs an M6×8approx.

227 km ESE of Ishinomaki, Japan · 37.53, 143.64

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

1915 M7.6M7.6

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M7.1 1909-03-13	1909-03-13 14:28	15 km	150 km ESE of Hasaki, Japan
M7.0 1909-03-12	1909-03-12 23:18	15 km	82 km ENE of Hasaki, Japan
M6.8 1908-01-15	1908-01-15 12:57	35 km	70 km E of Namie, Japan
M6.6 1906-04-08	1906-04-08 17:37	35 km	132 km ESE of Iwaki, 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.