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M7.4 earthquake, Tonga, 2013-05-23

MagnitudeM7.4mww

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Depth174 km

Time (UTC)2013-05-23 17:19

Rank in 20137 / 142among M6+

Rank since 1900618 / 14,458

Energy vs an M6×126approx.

292 km SW of Vaini, Tonga · -23.01, -177.23

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

Event	Time (UTC)	Depth	Place
M5.5 2013-06-01	2013-06-01 01:34	185 km	292 km SW of Vaini, Tonga

M6.5+ within 300 km (largest first)

1997 M7.8M7.8

2002 M7.7M7.7

1963 M7.6M7.6

2009 M7.6M7.6

1957 M7.4M7.4

1996 M7.4M7.4

2013 M7.4M7.4

1937 M7.3M7.3

1944 M7.3M7.3

2011 M7.3M7.3

1967 M7.2M7.2

1960 M7.2M7.2

Earlier M6+ within 300 km

Event	Time (UTC)	Depth	Place
M6.0 2012-02-26	2012-02-26 05:21	10 km	south of the Fiji Islands
M7.3 2011-09-15	2011-09-15 19:31	645 km	Fiji region
M6.1 2011-02-12	2011-02-12 17:57	85 km	56 km WNW of Haveluloto, Tonga
M6.0 2011-01-31	2011-01-31 06:03	76 km	101 km SSW of Vaini, Tonga
M6.3 2010-12-28	2010-12-28 08:34	551 km	south of the Fiji Islands
M6.2 2010-08-16	2010-08-16 19:35	603 km	Fiji region
M6.0 2010-02-22	2010-02-22 07:00	15 km	277 km SSW of ‘Ohonua, Tonga
M6.1 2010-02-13	2010-02-13 02:34	11 km	65 km SSE of ‘Ohonua, Tonga
M6.2 2009-11-02	2009-11-02 10:47	9 km	south of Tonga
M6.0 2009-10-25	2009-10-25 07:53	418 km	south of the Fiji 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.