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M6.9 earthquake, Vanuatu, 1987-02-23

MagnitudeM6.9mw

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Depth234 km

Time (UTC)1987-02-23 15:49

Rank in 198714 / 166among M6+

Rank since 19001880 / 14,458

Energy vs an M6×22approx.

57 km ENE of Lakatoro, Vanuatu · -15.85, 167.89

M6.5+ within 300 km (largest first)

1950 M7.9M7.9

1965 M7.7M7.7

1965 M7.6M7.6

1999 M7.5M7.5

1973 M7.5M7.5

1910 M7.4M7.4

1965 M7.4M7.4

1961 M7.3M7.3

1905 M7.3M7.3

1911 M7.3M7.3

2010 M7.3M7.3

2024 M7.3M7.3

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.4 1987-02-11	1987-02-11 07:56	24 km	25 km N of Norsup, Vanuatu
M6.7 1987-01-03	1987-01-03 22:04	14 km	92 km E of Port-Olry, Vanuatu
M6.4 1986-10-25	1986-10-25 20:47	31 km	20 km WNW of Port-Vila, Vanuatu
M6.2 1986-10-23	1986-10-23 02:18	160 km	43 km E of Luganville, Vanuatu
M6.5 1986-04-14	1986-04-14 00:25	29 km	78 km W of Sola, Vanuatu
M6.3 1985-12-21	1985-12-21 10:01	33 km	115 km NW of Port-Olry, Vanuatu
M6.5 1985-12-21	1985-12-21 02:46	33 km	99 km WSW of Sola, Vanuatu
M7.1 1985-12-21	1985-12-21 01:13	43 km	112 km W of Sola, Vanuatu
M6.6 1985-12-16	1985-12-16 08:04	37 km	139 km NW of Port-Olry, Vanuatu
M7.0 1985-11-28	1985-11-28 03:49	33 km	148 km W of Sola, Vanuatu

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.