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M7.0 earthquake, Japan, 1942-03-21

MagnitudeM7.0mw

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Depth25 km

Time (UTC)1942-03-21 23:20

Rank in 194210 / 99among M6+

Rank since 19001366 / 14,458

Energy vs an M6×34approx.

122 km SSE of Koshima, Japan · 29.16, 130.83

M6.5+ within 300 km (largest first)

1911 M7.9M7.9

1938 M7.6M7.6

1961 M7.5M7.5

1916 M7.4M7.4

1923 M7.4M7.4

1901 M7.2M7.2

1923 M7.2M7.2

1995 M7.1M7.1

1904 M7.1M7.1

2024 M7.1M7.1

1961 M7.0M7.0

1942 M7.0M7.0

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1941-07-24	1941-07-24 13:52	55 km	17 km SW of Naze, Japan
M6.7 1940-01-26	1940-01-26 17:04	15 km	285 km ESE of Naze, Japan
M6.1 1938-08-18	1938-08-18 19:06	35 km	11 km ENE of Naze, Japan
M7.6 1938-06-16	1938-06-16 02:15	20 km	78 km S of Naze, Japan
M6.3 1938-04-23	1938-04-23 00:27	15 km	197 km ESE of Naze, Japan
M6.1 1938-01-10	1938-01-10 20:54	25 km	113 km ESE of Koshima, Japan
M6.3 1937-08-26	1937-08-26 18:54	35 km	41 km SE of Nichinan, Japan
M6.5 1937-01-05	1937-01-05 21:38	20 km	114 km ESE of Nichinan, Japan
M6.3 1935-12-02	1935-12-02 16:42	20 km	143 km W of Naze, Japan
M6.4 1935-12-01	1935-12-01 23:45	20 km	142 km WNW 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.