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M6.6 earthquake, Papua New Guinea, 1989-08-21

MagnitudeM6.6mw

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Depth494 km

Time (UTC)1989-08-21 18:25

Rank in 198924 / 137among M6+

Rank since 19003523 / 14,458

Energy vs an M6×8approx.

244 km E of Kokopo, Papua New Guinea · -4.10, 154.46

M6.5+ within 300 km (largest first)

1919 M8.2M8.2

1971 M8.1M8.1

1971 M8.0M8.0

2000 M8.0M8.0

1916 M8.0M8.0

1975 M7.9M7.9

2017 M7.9M7.9

2016 M7.9M7.9

1920 M7.8M7.8

2000 M7.8M7.8

1995 M7.7M7.7

1946 M7.7M7.7

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1989-02-04	1989-02-04 22:10	52 km	New Ireland region, Papua New Guinea
M6.4 1987-12-04	1987-12-04 19:51	145 km	118 km WNW of Panguna, Papua New Guinea
M6.0 1987-09-15	1987-09-15 08:50	63 km	106 km ESE of Kokopo, Papua New Guinea
M6.5 1987-05-06	1987-05-06 12:39	20 km	157 km SSE of Kokopo, Papua New Guinea
M6.4 1986-10-24	1986-10-24 02:58	52 km	193 km WNW of Panguna, Papua New Guinea
M6.8 1986-10-14	1986-10-14 16:53	41 km	167 km ESE of Kokopo, Papua New Guinea
M6.1 1986-09-14	1986-09-14 20:58	59 km	65 km WSW of Panguna, Papua New Guinea
M6.5 1986-09-11	1986-09-11 00:18	51 km	95 km SSE of Kokopo, Papua New Guinea
M6.0 1985-07-17	1985-07-17 08:09	40 km	68 km E of Kokopo, Papua New Guinea
M7.3 1985-07-03	1985-07-03 04:36	33 km	62 km E of Kokopo, Papua New Guinea

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.