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M6.6 earthquake, Vanuatu, 1973-12-30

MagnitudeM6.6ms

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Depth10 km

Time (UTC)1973-12-30 16:39

Rank in 197320 / 93among M6+

Rank since 19003450 / 14,458

Energy vs an M6×8approx.

56 km W of Luganville, Vanuatu · -15.51, 166.64

M6.5+ within 300 km (largest first)

1965 M7.7M7.7

2009 M7.7M7.7

1965 M7.6M7.6

1999 M7.5M7.5

1973 M7.5M7.5

1910 M7.4M7.4

1965 M7.4M7.4

2009 M7.4M7.4

1911 M7.3M7.3

2010 M7.3M7.3

2024 M7.3M7.3

2026 M7.3M7.3

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M7.2 1973-12-29	1973-12-29 00:19	47 km	20 km WSW of Port-Olry, Vanuatu
M7.5 1973-12-28	1973-12-28 13:41	26 km	81 km NW of Port-Olry, Vanuatu
M6.0 1973-11-30	1973-11-30 08:09	124 km	38 km ESE of Port-Olry, Vanuatu
M6.4 1973-10-09	1973-10-09 07:57	9 km	52 km SW of Sola, Vanuatu
M6.1 1973-08-01	1973-08-01 01:31	200 km	52 km SW of Sola, Vanuatu
M6.1 1973-06-05	1973-06-05 03:12	24 km	80 km NW of Port-Vila, Vanuatu
M6.4 1973-04-08	1973-04-08 12:41	35 km	29 km SSE of Luganville, Vanuatu
M6.1 1973-01-06	1973-01-06 15:52	36 km	85 km WNW of Port-Olry, Vanuatu
M6.0 1972-09-01	1972-09-01 12:47	122 km	35 km E of Port-Olry, Vanuatu
M6.7 1972-05-04	1972-05-04 07:48	54 km	21 km ENE of Norsup, 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.