Strong mag. 6.2 earthquake - Tonga on Monday, 18 August 1986 at 01:59 (GMT)
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Strong magnitude 6.2 earthquake at 20 km depth
Depth: 19.7 km
Epicenter latitude / longitude: 20.492°S / 174.207°W (Tonga)
Nearest volcano: Feinga Seamount (107 km / 66 mi)
Nearby towns and cities:
126 km (78 mi) NE of Nuku'alofa (pop: 22,400) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.3 x 1014 joules (35 gigawatt hours, equivalent to 30089 tons of TNT or 1.9 atomic bombs!) More info
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.
|M 6.2||20 km||Tonga||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Aftershocks of the 6.2 quake Tonga 18 August 1986 01:59 GMT
More infoRecorded aftershocks, latest first (3 quakes):
- 30 Dec 1986 15:32 UTC| M 6.0 |23.7 km (14.7 mi) depth|18 km (11 mi) distance| USGS | Strong mag. 6.0 earthquake - Tonga on Tuesday, 30 December 1986 at 15:32 (GMT)
- 29 Dec 1986 05:34 UTC| M 4.5 |33 km (20.5 mi) depth|61 km (38 mi) distance| USGS | Details
- 28 Sep 1986 06:14 UTC| M 4.7 |33 km (20.5 mi) depth|58 km (36 mi) distance| USGS | Details