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M6.5 earthquake, New Zealand, 1968-08-21

MagnitudeM6.5mw

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Depth16 km

Time (UTC)1968-08-21 17:56

Rank in 196840 / 159among M6+

Rank since 19003991 / 14,458

Energy vs an M6×7approx.

Kermadec Islands, New Zealand · -30.83, -178.81

M6.5+ within 300 km (largest first)

1917 M8.2M8.2

2021 M8.1M8.1

1976 M8.0M8.0

2011 M7.6M7.6

1917 M7.5M7.5

2006 M7.4M7.4

2020 M7.4M7.4

2021 M7.4M7.4

1959 M7.3M7.3

1968 M7.3M7.3

2019 M7.3M7.3

1963 M7.3M7.3

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M7.3 1968-07-25	1968-07-25 07:23	48 km	Kermadec Islands, New Zealand
M6.4 1968-05-30	1968-05-30 19:42	35 km	Kermadec Islands, New Zealand
M6.9 1968-05-20	1968-05-20 20:05	60 km	Kermadec Islands, New Zealand
M7.0 1968-05-20	1968-05-20 07:13	56 km	Kermadec Islands, New Zealand
M6.5 1968-05-15	1968-05-15 15:00	22 km	Kermadec Islands, New Zealand
M6.1 1968-01-20	1968-01-20 21:21	357 km	Kermadec Islands region
M6.5 1967-09-04	1967-09-04 03:52	236 km	Kermadec Islands region
M6.1 1967-07-22	1967-07-22 03:58	37 km	south of the Kermadec Islands
M6.1 1965-11-19	1965-11-19 07:08	10 km	Kermadec Islands, New Zealand
M6.4 1964-08-05	1964-08-05 11:06	230 km	south of the Kermadec Islands

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.