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M6.7 earthquake, Tonga, 1916-10-20

MagnitudeM6.7mw

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Depth15 km

Time (UTC)1916-10-20 17:04

Rank in 191627 / 57among M6+

Rank since 19003187 / 14,458

Energy vs an M6×10approx.

144 km ENE of Hihifo, Tonga · -15.54, -172.52

M6.5+ within 300 km (largest first)

2009 M8.1M8.1

1917 M8.0M8.0

1975 M7.8M7.8

1981 M7.7M7.7

1977 M7.6M7.6

2023 M7.6M7.6

1995 M7.4M7.4

1987 M7.3M7.3

1984 M7.2M7.2

2000 M7.2M7.2

1957 M7.1M7.1

1978 M7.0M7.0

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.5 1916-10-11	1916-10-11 18:05	15 km	166 km WNW of Hihifo, Tonga
M6.8 1914-12-20	1914-12-20 14:09	35 km	100 km SE of Hihifo, Tonga
M6.9 1913-05-08	1913-05-08 18:35	170 km	127 km S 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.