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M7.2 earthquake, Tonga, 1986-10-30

MagnitudeM7.2mw

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Depth188 km

Time (UTC)1986-10-30 01:28

Rank in 19867 / 138among M6+

Rank since 1900932 / 14,458

Energy vs an M6×63approx.

157 km WSW of Haveluloto, Tonga · -21.70, -176.62

M6.5+ within 300 km (largest first)

1903 M8.0M8.0

1997 M7.8M7.8

1950 M7.8M7.8

2002 M7.7M7.7

2009 M7.6M7.6

1948 M7.5M7.5

1962 M7.5M7.5

1957 M7.4M7.4

1996 M7.4M7.4

2013 M7.4M7.4

1937 M7.3M7.3

1944 M7.3M7.3

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.2 1986-08-18	1986-08-18 01:59	20 km	76 km SSE of Pangai, Tonga
M6.5 1986-06-28	1986-06-28 05:03	211 km	151 km NW of Nuku‘alofa, Tonga
M7.1 1986-06-16	1986-06-16 10:48	547 km	south of the Fiji Islands
M6.8 1986-05-26	1986-05-26 18:40	583 km	Fiji region
M6.1 1985-12-25	1985-12-25 22:15	455 km	Fiji region
M6.3 1985-10-12	1985-10-12 02:12	155 km	133 km WSW of Haveluloto, Tonga
M6.1 1985-09-27	1985-09-27 10:10	33 km	99 km SSE of ‘Ohonua, Tonga
M6.6 1985-08-28	1985-08-28 20:50	625 km	Fiji region
M6.0 1985-02-03	1985-02-03 04:50	56 km	85 km SSE of Pangai, Tonga
M6.3 1984-11-15	1984-11-15 05:52	348 km	244 km WNW of Haveluloto, 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.