Strong mag. 6.3 earthquake - South Pacific Ocean, 135 km south of Nuku\'alofa, Tongatapu, on Sunday, 4 November 1956 at 07:05 (GMT)

Strong mag. 6.3 earthquake - South Pacific Ocean, 135 km south of Nuku\'alofa, Tongatapu, on Sunday, 4 November 1956 at 07:05 (GMT)

Strong magnitude 6.3 earthquake at 49 km depth

Date & time: 4 Nov 1956 07:05:49 UTC
Magnitude: 6.3
Depth: 48.7 km
Epicenter latitude / longitude: 22.326°S / 175.486°W (South Pacific Ocean, Tonga)
Nearest volcano: Ata Volcanic Complex (74 km / 46 mi)
Nearby towns and cities:
124 km (77 mi) SSW of ‘Ohonua (Ohonua) (pop: 1,240) --> See nearby quakes!
135 km (84 mi) SSW of Nuku'alofa (pop: 22,400) --> See nearby quakes!
135 km (84 mi) SSW of Nuku‘alofa (pop: 22,400) --> See nearby quakes!
140 km (87 mi) SSW of Kolonga (pop: 1,100) --> See nearby quakes!
303 km (188 mi) SSW of Pangai (pop: 1,740) --> See nearby quakes!
438 km (272 mi) SSW of Neiafu (pop: 4,320) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 atomic bombs!) More info
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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
MagnitudeDepthLocationSource
M 6.349 kmTonga regionUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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Aftershocks

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Recorded aftershocks, latest first (1 quakes):
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Earlier earthquakes in the same area

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