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M6.6 earthquake, Tonga, 2012-04-28

MagnitudeM6.6mww

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Depth135 km

Time (UTC)2012-04-28 10:08

Rank in 201233 / 133among M6+

Rank since 19003715 / 14,458

Energy vs an M6×8approx.

76 km W of Neiafu, Tonga · -18.68, -174.71

M5.5+ within 100 km in the next 30 days

None

M6.5+ within 300 km (largest first)

1919 M8.1M8.1

2006 M8.0M8.0

1903 M8.0M8.0

1950 M7.8M7.8

1913 M7.8M7.8

1948 M7.5M7.5

2026 M7.5M7.5

1921 M7.4M7.4

1907 M7.3M7.3

1987 M7.3M7.3

2022 M7.3M7.3

1906 M7.2M7.2

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 2011-12-26	2011-12-26 04:48	90 km	27 km SSW of Hihifo, Tonga
M6.1 2011-02-12	2011-02-12 17:57	85 km	56 km WNW of Haveluloto, Tonga
M6.1 2010-11-03	2010-11-03 23:34	18 km	72 km S of Pangai, Tonga
M6.1 2010-09-04	2010-09-04 08:52	69 km	141 km N of Neiafu, Tonga
M6.0 2010-04-10	2010-04-10 16:54	273 km	155 km NW of Nuku‘alofa, Tonga
M6.8 2009-11-24	2009-11-24 12:47	18 km	104 km SSE of Pangai, Tonga
M6.1 2009-10-02	2009-10-02 01:07	8 km	54 km SE of Hihifo, Tonga
M6.4 2008-10-22	2008-10-22 12:55	233 km	146 km W of Neiafu, Tonga
M6.2 2008-06-26	2008-06-26 21:19	38 km	149 km SE of Pangai, Tonga
M6.3 2008-04-16	2008-04-16 00:35	10 km	181 km W 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.