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M8.1 earthquake, 1919 Tonga Earthquake, 1919-04-30

MagnitudeM8.1mw

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Depth25 km

Time (UTC)1919-04-30 07:17

Rank in 19192 / 90among M6+

Rank since 190054 / 14,458

Energy vs an M6×1,413approx.

1919 Tonga Earthquake · -18.32, -172.44

M6.5+ within 300 km (largest first)

1919 M8.1M8.1

2006 M8.0M8.0

1975 M7.8M7.8

1913 M7.8M7.8

1977 M7.6M7.6

1921 M7.4M7.4

1907 M7.3M7.3

1987 M7.3M7.3

2022 M7.3M7.3

1906 M7.2M7.2

2000 M7.2M7.2

1988 M7.1M7.1

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1917-06-28	1917-06-28 13:55	15 km	211 km SSW of Vailoatai, American Samoa
M6.8 1914-12-20	1914-12-20 14:09	35 km	100 km SE of Hihifo, Tonga
M7.8 1913-06-26	1913-06-26 04:57	25 km	111 km SSE of Pangai, Tonga
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
M6.9 1905-02-27	1905-02-27 17:24	35 km	15 km WSW of Pangai, 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.