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M7.1 earthquake, Japan, 1998-08-20

MagnitudeM7.1mwb

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Depth440 km

Time (UTC)1998-08-20 06:40

Rank in 19988 / 121among M6+

Rank since 19001198 / 14,458

Energy vs an M6×45approx.

Bonin Islands, Japan region · 28.93, 139.33

M6.5+ within 300 km (largest first)

2015 M7.8M7.8

1984 M7.4M7.4

2000 M7.4M7.4

1956 M7.3M7.3

1970 M7.1M7.1

1951 M7.1M7.1

1982 M7.1M7.1

1998 M7.1M7.1

1984 M6.9M6.9

2010 M6.8M6.8

1982 M6.8M6.8

1991 M6.7M6.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1997-11-10	1997-11-10 23:06	86 km	Izu Islands, Japan region
M6.3 1996-06-26	1996-06-26 03:22	468 km	Bonin Islands, Japan region
M6.7 1996-03-16	1996-03-16 22:04	477 km	Bonin Islands, Japan region
M6.1 1995-10-01	1995-10-01 17:06	431 km	Izu Islands, Japan region
M6.5 1992-10-30	1992-10-30 02:49	393 km	Izu Islands, Japan region
M6.0 1992-05-30	1992-05-30 12:42	20 km	Izu Islands, Japan region
M6.7 1992-01-20	1992-01-20 13:37	498 km	Bonin Islands, Japan region
M6.7 1991-05-03	1991-05-03 02:14	433 km	Bonin Islands, Japan region
M6.5 1990-08-05	1990-08-05 01:34	496 km	Izu Islands, Japan region
M6.3 1989-04-27	1989-04-27 02:20	85 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.