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M6.8 earthquake, Tonga, 1914-12-20

MagnitudeM6.8mw

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Depth35 km

Time (UTC)1914-12-20 14:09

Rank in 191418 / 54among M6+

Rank since 19002166 / 14,458

Energy vs an M6×17approx.

100 km SE of Hihifo, Tonga · -16.64, -173.19

M6.5+ within 300 km (largest first)

1919 M8.1M8.1

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

1921 M7.4M7.4

1907 M7.3M7.3

1987 M7.3M7.3

1906 M7.2M7.2

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.9 1913-05-08	1913-05-08 18:35	170 km	127 km S of Hihifo, Tonga
M7.3 1907-01-02	1907-01-02 11:56	30 km	85 km ESE of Neiafu, Tonga
M7.2 1906-12-19	1906-12-19 01:14	35 km	108 km SE of Neiafu, 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.