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M6.9 earthquake, Tonga, 2006-09-28

MagnitudeM6.9mwc

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Depth28 km

Time (UTC)2006-09-28 06:22

Rank in 200612 / 153among M6+

Rank since 19001949 / 14,458

Energy vs an M6×22approx.

201 km ESE of Hihifo, Tonga · -16.59, -172.03

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

None

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

1987 M7.3M7.3

1984 M7.2M7.2

2000 M7.2M7.2

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 2006-07-07	2006-07-07 07:26	35 km	81 km NNE of Hihifo, Tonga
M6.0 2006-04-30	2006-04-30 19:33	10 km	88 km ENE of Hihifo, Tonga
M6.2 2005-05-18	2005-05-18 10:27	10 km	92 km NE of Hihifo, Tonga
M6.2 2004-09-03	2004-09-03 19:04	10 km	91 km NNE of Hihifo, Tonga
M6.1 2004-03-14	2004-03-14 16:30	12 km	214 km SE of Hihifo, Tonga
M6.7 2004-01-25	2004-01-25 11:43	130 km	105 km SSW of Hihifo, Tonga
M6.2 2003-10-07	2003-10-07 04:55	10 km	246 km SSE of Vaitogi, American Samoa
M6.4 2003-09-02	2003-09-02 18:28	10 km	101 km NE of Hihifo, Tonga
M6.2 2003-05-03	2003-05-03 05:03	33 km	89 km N of Hihifo, Tonga
M6.2 2003-03-28	2003-03-28 17:31	41 km	76 km NNE 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.