Strong mag. 6.3 earthquake - South Pacific Ocean, 135 km south of Nuku\'alofa, Tongatapu, on Sunday, 4 November 1956 at 07:05 (GMT)
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Strong magnitude 6.3 earthquake at 49 km depth
Date & time: 4 Nov 1956 07:05:49 UTC
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
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||49 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 (1 quakes):
- 29 Dec 1956 20:22 UTC| M 6.2 |15 km (9.3 mi) depth|60 km (37 mi) distance| USGS | Very strong mag. 6.2 earthquake - South Pacific Ocean, 152 km south of Nuku'alofa, Tongatapu, on Saturday, 29 December 1956 at 20:22 (GMT)