Strong mag. 6.0 earthquake - Tonga on Friday, 10 September 1971 at 06:28 (GMT)

Strong mag. 6.0 earthquake - Tonga on Friday, 10 September 1971 at 06:28 (GMT)

Strong magnitude 6.0 earthquake at 20 km depth

Date & time: 10 Sep 1971 06:28:51 UTC
Magnitude: 6
Depth: 20.0 km
Epicenter latitude / longitude: 20.413°S / 174.265°W (Tonga)
Nearest volcano: Feinga Seamount (98 km / 61 mi)
Nearby towns and cities:
67 km (42 mi) S of Pangai (pop: 1,740) --> See nearby quakes!
127 km (79 mi) NE of Nuku'alofa (pop: 22,400) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 6.3 x 1013 joules (17.5 gigawatt hours, equivalent to 15080 tons of TNT or 0.9 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 6.020 kmTongaUSGS
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 of the 6.0 quake Tonga 10 September 1971 06:28 GMT

More info
Recorded aftershocks, latest first (0 quakes):
So far, no aftershocks have been registered.
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Earlier earthquakes in the same area

Strong mag. 6.0 earthquake - Tonga on Friday, 10 September 1971 at 06:28 (GMT)
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