Strong mag. 6.1 earthquake - South Pacific Ocean, 130 km southeast of Nuku\'alofa, Tongatapu, on Friday, 27 September 1985 at 10:10 (GMT)
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Strong magnitude 6.1 earthquake at 33 km depth
Date & time: 27 Sep 1985 10:10:18 UTC
Depth: 33.0 km
Epicenter latitude / longitude: 22.171°S / 174.606°W (South Pacific Ocean, Tonga)
Nearest volcano: Unnamed 21.38°S/175.65°W (139 km / 86 mi)
Nearby towns and cities:
100 km (62 mi) SSE of ‘Ohonua (Ohonua) (pop: 1,240) --> See nearby quakes!
125 km (78 mi) SSE of Kolonga (pop: 1,100) --> See nearby quakes!
130 km (81 mi) SSE of Nuku'alofa (pop: 22,400) --> See nearby quakes!
130 km (81 mi) SSE of Nuku‘alofa (pop: 22,400) --> See nearby quakes!
263 km (164 mi) S of Pangai (pop: 1,740) --> See nearby quakes!
397 km (247 mi) S of Neiafu (pop: 4,320) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 8.9 x 1013 joules (24.8 gigawatt hours, equivalent to 21301 tons of TNT or 1.3 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 6.1||33 km||Tonga region||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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More infoRecorded aftershocks, latest first (3 quakes):
- 16 Feb 1986 09:29 UTC| M 4.9 |33 km (20.5 mi) depth|54 km (33 mi) distance| USGS | Details
- 26 Nov 1985 06:18 UTC| M 5.5 |43.6 km (27.1 mi) depth|50 km (31 mi) distance| USGS | Details
- 10 Oct 1985 15:11 UTC| M 5.2 |33 km (20.5 mi) depth|31 km (19 mi) distance| USGS | Details