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M 6.8 Secretary Island Tue, Aug 10 1993
The 1993 Secretary Island earthquake was reportedly felt as far away as Sydney, Australia.
Isoseismal map of the Secretary Island earthquake. Courtesy Atlas of isoseismal maps of New Zealand earthquakes (2nd edition): Downes, G.L.; Dowrick, D.J."
- Magnitudes: ML 6.7, MW 6.8, MS 7.0
The earthquake that struck Secretary Island in Fiordland on 10 August 1993 was felt from Auckland to Stewart Island, and even as far away as Sydney, Australia. The highest reported intensities of MM 8 were received from the nearby township of Te Anau. The quake triggered widespread minor landslides in the mountains between Doubtful Sound and Manapouri, and a ~0.6m tsunami on parts of the coast.