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M6.5 earthquake, Tonga, 1983-05-15

MagnitudeM6.5ms

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Depth33 km

Time (UTC)1983-05-15 00:24

Rank in 198346 / 136among M6+

Rank since 19004329 / 14,458

Energy vs an M6×6approx.

168 km NW of Pangai, Tonga · -18.91, -175.64

M6.5+ within 300 km (largest first)

2018 M8.2M8.2

2006 M8.0M8.0

1903 M8.0M8.0

1919 M7.8M7.8

1950 M7.8M7.8

1913 M7.8M7.8

2026 M7.5M7.5

1962 M7.5M7.5

1921 M7.4M7.4

1937 M7.3M7.3

1907 M7.3M7.3

1906 M7.2M7.2

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.7 1983-03-21	1983-03-21 07:44	68 km	41 km SW of Vaini, Tonga
M6.3 1982-06-11	1982-06-11 00:38	123 km	123 km NNW of Neiafu, Tonga
M6.3 1981-11-04	1981-11-04 14:38	33 km	26 km SSE of Pangai, Tonga
M6.0 1980-11-30	1980-11-30 12:24	202 km	162 km WNW of Pangai, Tonga
M6.1 1980-05-27	1980-05-27 13:01	33 km	80 km W of Neiafu, Tonga
M6.1 1980-04-01	1980-04-01 11:11	37 km	125 km SE of Pangai, Tonga
M6.2 1980-03-31	1980-03-31 13:04	33 km	100 km SE of Pangai, Tonga
M6.2 1979-11-24	1979-11-24 19:19	33 km	254 km WNW of Pangai, Tonga
M6.3 1977-08-11	1977-08-11 01:42	57 km	127 km NNW of Neiafu, Tonga
M6.0 1976-11-25	1976-11-25 14:06	442 km	Fiji region

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.