Strong mag. 6.3 earthquake - South Pacific Ocean, 135 km southwest of Nuku\'alofa, Tongatapu, on Saturday, 12 October 1985 at 02:12 (GMT)
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Strong magnitude 6.3 earthquake at 155 km depth
Date & time: 12 Oct 1985 02:12:57 UTC
Depth: 155.0 km
Epicenter latitude / longitude: 21.656°S / 176.382°W (South Pacific Ocean, Tonga)
Nearest volcano: Ata Volcanic Complex (78 km / 48 mi)
Nearby towns and cities:
133 km (83 mi) WSW of Haveluloto (pop: 3,420) --> See nearby quakes!
135 km (84 mi) WSW of Nuku'alofa (pop: 22,400) --> See nearby quakes!
135 km (84 mi) WSW of Nuku‘alofa (pop: 22,400) --> See nearby quakes!
148 km (92 mi) WSW of Kolonga (pop: 1,100) --> See nearby quakes!
152 km (95 mi) WSW of ‘Ohonua (Ohonua) (pop: 1,240) --> See nearby quakes!
294 km (183 mi) SW of Pangai (pop: 1,740) --> See nearby quakes!
418 km (260 mi) SW 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
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 6.3||155 km||Fiji region (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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More infoRecorded aftershocks, latest first (2 quakes):
- 25 Mar 1986 08:00 UTC| M 5.4 |192 km (119.3 mi) depth|54 km (33 mi) distance| USGS | Details
- 17 Dec 1985 21:41 UTC| M 5.4 |194.5 km (120.9 mi) depth|28 km (17 mi) distance| USGS | Details