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M6.6 earthquake, southeast of the Loyalty Islands, 1988-07-31

MagnitudeM6.6mw

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Depth56 km

Time (UTC)1988-07-31 12:50

Rank in 198834 / 122among M6+

Rank since 19003517 / 14,458

Energy vs an M6×8approx.

southeast of the Loyalty Islands · -22.21, 171.08

M6.5+ within 300 km (largest first)

1901 M7.9M7.9

1995 M7.7M7.7

2021 M7.7M7.7

2023 M7.7M7.7

1928 M7.6M7.6

2018 M7.5M7.5

1998 M7.5M7.5

2003 M7.3M7.3

1906 M7.2M7.2

1980 M7.2M7.2

2016 M7.2M7.2

1935 M7.1M7.1

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 1988-06-27	1988-06-27 06:07	66 km	77 km S of Isangel, Vanuatu
M6.1 1988-05-03	1988-05-03 23:22	11 km	282 km ESE of Tadine, New Caledonia
M6.1 1987-06-26	1987-06-26 23:05	24 km	138 km ENE of Tadine, New Caledonia
M6.5 1987-06-24	1987-06-24 03:30	33 km	Vanuatu region
M6.1 1987-04-21	1987-04-21 15:28	15 km	278 km ESE of Tadine, New Caledonia
M6.1 1986-05-01	1986-05-01 19:31	52 km	245 km E of Tadine, New Caledonia
M7.1 1986-01-15	1986-01-15 20:17	150 km	210 km SSE of Isangel, Vanuatu
M6.0 1986-01-15	1986-01-15 20:17	146 km	229 km SSE of Isangel, Vanuatu
M7.1 1984-11-15	1984-11-15 02:46	105 km	southeast of the Loyalty Islands
M6.2 1983-07-07	1983-07-07 16:05	34 km	southeast of the Loyalty Islands

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.