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M7.3 earthquake, Japan, 1956-02-18

MagnitudeM7.3mw

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Depth484 km

Time (UTC)1956-02-18 07:34

Rank in 19563 / 109among M6+

Rank since 1900706 / 14,458

Energy vs an M6×89approx.

Izu Islands, Japan region · 30.21, 138.10

M6.5+ within 300 km (largest first)

1984 M7.4M7.4

2000 M7.4M7.4

1956 M7.3M7.3

1910 M7.2M7.2

1951 M7.1M7.1

1982 M7.1M7.1

1998 M7.1M7.1

1928 M7.0M7.0

1978 M6.9M6.9

1984 M6.9M6.9

1993 M6.9M6.9

2010 M6.8M6.8

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M7.1 1951-07-11	1951-07-11 18:21	497 km	Bonin Islands, Japan region
M7.0 1928-03-29	1928-03-29 05:06	405 km	289 km SE of Shing?, Japan
M6.2 1913-04-08	1913-04-08 02:20	80 km	Bonin Islands, Japan region
M6.0 1912-07-24	1912-07-24 23:24	500 km	southeast of Shikoku, Japan
M7.2 1910-02-12	1910-02-12 18:10	375 km	176 km SE of Shingū, Japan
M6.2 1906-11-08	1906-11-08 00:39	35 km	Izu Islands, Japan region

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.