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M7.1 earthquake, Tonga, 1988-10-08

MagnitudeM7.1mw

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Depth35 km

Time (UTC)1988-10-08 04:46

Rank in 19888 / 122among M6+

Rank since 19001170 / 14,458

Energy vs an M6×45approx.

166 km E of Neiafu, Tonga · -18.77, -172.41

M6.5+ within 300 km (largest first)

1919 M8.1M8.1

2006 M8.0M8.0

1975 M7.8M7.8

1913 M7.8M7.8

1977 M7.6M7.6

1921 M7.4M7.4

1907 M7.3M7.3

1987 M7.3M7.3

2022 M7.3M7.3

1906 M7.2M7.2

2000 M7.2M7.2

1988 M7.1M7.1

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.4 1988-07-19	1988-07-19 01:00	137 km	76 km WNW of Pangai, Tonga
M6.2 1987-11-03	1987-11-03 08:15	88 km	138 km S of Hihifo, Tonga
M6.3 1987-10-08	1987-10-08 03:20	40 km	132 km E of Pangai, Tonga
M7.3 1987-10-06	1987-10-06 04:19	16 km	201 km ENE of Neiafu, Tonga
M6.0 1986-12-30	1986-12-30 15:32	24 km	71 km SSE of Pangai, Tonga
M6.2 1986-08-18	1986-08-18 01:59	20 km	76 km SSE of Pangai, Tonga
M6.0 1985-02-03	1985-02-03 04:50	56 km	85 km SSE of Pangai, Tonga
M6.6 1984-10-30	1984-10-30 01:05	141 km	131 km SSW of Hihifo, Tonga
M6.3 1983-10-17	1983-10-17 13:25	30 km	125 km SSE of Pangai, Tonga
M6.1 1983-08-30	1983-08-30 08:50	39 km	201 km ESE 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.