A strong and shallow earthquake registered by the USGS as M6.8 hit the Macquarie Island region at 14:53 UTC on April 29, 2025. The agency reports a depth of 4.5 km (2.8 miles). EMSC is reporting M6.8 at a depth of 10 km (6.2 miles). Macquarie Island is located about halfway between Antarctica and New Zealand.
This was the second M6+ earthquake in 2 hours along the Macquarie Ridge Complex, a major plate boundary south of New Zealand.
The epicenter was located about 1 235 km (768 miles) SW of Bluff, Southland, New Zealand, and 1 398 km (869 miles) SSW of Kingston, Tasmania, Australia.
Based on all available data, there is no tsunami threat from this earthquake, NWS PTWC said.
The USGS issued a Green alert for shaking-related fatalities and economic losses. There is a low likelihood of casualties and damage.
The earthquake follows an M6.2 earthquake located near the coast of South Island, New Zealand, approximately 900 km (560 miles) to the north-northeast.
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