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M6.5 earthquake, Japan, 1990-09-23

MagnitudeM6.5mw

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Depth10 km

Time (UTC)1990-09-23 21:13

Rank in 199052 / 153among M6+

Rank since 19004412 / 14,458

Energy vs an M6×6approx.

153 km SSE of ?yama, Japan · 33.27, 138.64

M6.5+ within 300 km (largest first)

1946 M8.3M8.3

1944 M8.1M8.1

1923 M8.0M8.0

1953 M7.9M7.9

1923 M7.8M7.8

1948 M7.4M7.4

1906 M7.4M7.4

2004 M7.4M7.4

1972 M7.3M7.3

1905 M7.2M7.2

1910 M7.2M7.2

1984 M7.2M7.2

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.3 1990-06-01	1990-06-01 01:22	67 km	near the east coast of Honshu, Japan
M6.4 1990-02-20	1990-02-20 06:53	14 km	28 km E of Shimoda, Japan
M6.4 1989-06-16	1989-06-16 23:42	360 km	284 km SE of Shing?, Japan
M6.7 1987-12-17	1987-12-17 02:08	63 km	10 km SW of Mobara, Japan
M6.0 1986-11-22	1986-11-22 00:41	9 km	59 km ESE of Shimoda, Japan
M6.6 1986-06-24	1986-06-24 02:53	63 km	46 km SSE of Katsuura, Japan
M6.2 1985-04-09	1985-04-09 05:15	44 km	122 km SSE of Katsuura, Japan
M6.8 1984-09-18	1984-09-18 17:02	48 km	166 km SE of Katsuura, Japan
M6.2 1984-09-13	1984-09-13 23:48	10 km	23 km E of Gero, Japan
M6.9 1984-04-24	1984-04-24 04:11	403 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.