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M7.0 earthquake, Japan, 1923-04-23

MagnitudeM7.0mw

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Depth20 km

Time (UTC)1923-04-23 03:17

Rank in 192320 / 93among M6+

Rank since 19001679 / 14,458

Energy vs an M6×28approx.

70 km WNW of Naha, Japan · 26.40, 127.01

M6.5+ within 300 km (largest first)

1910 M8.1M8.1

1938 M7.7M7.7

1938 M7.6M7.6

1917 M7.3M7.3

2010 M7.0M7.0

1911 M7.0M7.0

1923 M7.0M7.0

2011 M6.9M6.9

1923 M6.8M6.8

1926 M6.8M6.8

1917 M6.8M6.8

1910 M6.8M6.8

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1919-07-17	1919-07-17 09:48	15 km	122 km WNW of Naha, Japan
M6.2 1918-02-13	1918-02-13 20:25	15 km	184 km SE of Itoman, Japan
M6.8 1917-07-04	1917-07-04 05:36	15 km	92 km NNE of Hirara, Japan
M7.3 1917-07-04	1917-07-04 00:38	35 km	120 km ENE of Hirara, Japan
M6.4 1916-03-25	1916-03-25 23:52	35 km	21 km SSW of Hirara, Japan
M6.3 1914-07-04	1914-07-04 17:47	15 km	67 km WNW of Naze, Japan
M7.0 1911-02-23	1911-02-23 11:14	35 km	12 km SE of Ginowan, Japan
M6.8 1910-11-29	1910-11-29 02:26	15 km	59 km NE of Hirara, Japan
M8.1 1910-04-12	1910-04-12 00:22	235 km	1910 Taiwan Earthquake
M6.2 1909-08-29	1909-08-29 10:29	35 km	19 km SE of Ginowan, 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.