Very strong mag. 6.3 earthquake - South Pacific Ocean, 125 km southeast of Nuku\'alofa, Tongatapu, on Friday, 17 July 1970 at 20:04 (GMT)
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Very strong magnitude 6.3 earthquake at 35 km depth
Date & time: 17 Jul 1970 20:04:49 UTC
Depth: 35.0 km
Epicenter latitude / longitude: 22.137°S / 174.647°W (South Pacific Ocean, Tonga)
Nearest volcano: Unnamed 21.38°S/175.65°W (134 km / 83 mi)
Nearby towns and cities:
95 km (59 mi) SSE of ‘Ohonua (Ohonua) (pop: 1,240) --> See nearby quakes!
120 km (74 mi) SSE of Kolonga (pop: 1,100) --> See nearby quakes!
125 km (78 mi) SSE of Nuku'alofa (pop: 22,400) --> See nearby quakes!
125 km (78 mi) SSE of Nuku‘alofa (pop: 22,400) --> See nearby quakes!
260 km (162 mi) S of Pangai (pop: 1,740) --> See nearby quakes!
394 km (245 mi) S 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||35 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.