M6.3 earthquake - 225 km SSW of ‘Ohonua, Tonga
20296 d ago · 23 Mar 1971, 02:15 UTC 225 km SSW of ‘Ohonua, Tonga
What happened
A magnitude 6.3 earthquake struck 225 km SSW of ‘Ohonua, Tonga on 23 Mar 1971, 02:15 UTC at a depth of 73 km.
Earthquakes of this size are classed as Strong. Can cause damage in populated areas up to tens of kilometres away. This was an intermediate-depth earthquake, so shaking is spread over a wider, gentler area.
The nearest town in our records is Nuku‘alofa, about 234 km away in Tongatapu, Tonga.
Timeline
First reported by USGS
16 Oct 2026, 20:46 UTC
Community
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