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M7.3 earthquake, Tonga, 1987-10-06

MagnitudeM7.3mw

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Depth16 km

Time (UTC)1987-10-06 04:19

Rank in 19876 / 166among M6+

Rank since 1900732 / 14,458

Energy vs an M6×89approx.

201 km ENE of Neiafu, Tonga · -17.94, -172.22

M6.5+ within 300 km (largest first)

1919 M8.1M8.1

2009 M8.1M8.1

1975 M7.8M7.8

1977 M7.6M7.6

1921 M7.4M7.4

1907 M7.3M7.3

2022 M7.3M7.3

1987 M7.3M7.3

1906 M7.2M7.2

1984 M7.2M7.2

2000 M7.2M7.2

1988 M7.1M7.1

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.1 1986-07-01	1986-07-01 00:49	33 km	150 km ENE of Hihifo, Tonga
M6.0 1986-05-24	1986-05-24 10:43	33 km	90 km ENE of Hihifo, Tonga
M6.0 1985-11-30	1985-11-30 03:04	165 km	62 km SW of Hihifo, Tonga
M6.6 1984-10-30	1984-10-30 01:05	141 km	131 km SSW of Hihifo, Tonga
M6.0 1984-10-19	1984-10-19 14:37	121 km	18 km WNW of Hihifo, Tonga
M7.2 1984-10-15	1984-10-15 10:21	128 km	19 km ENE of Hihifo, Tonga
M6.0 1984-04-21	1984-04-21 12:36	73 km	94 km ENE of Hihifo, Tonga
M6.1 1983-08-30	1983-08-30 08:50	39 km	201 km ESE of Hihifo, Tonga
M6.1 1983-06-01	1983-06-01 10:58	33 km	109 km ENE of Hihifo, Tonga
M6.6 1983-06-01	1983-06-01 01:59	180 km	147 km SW of Hihifo, Tonga

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.