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Strong 7.5-Magnitude Earthquake Strikes Drake Passage, No Tsunami Threat

8/22/2025

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Summary

Story summary

An 8.0-magnitude earthquake hit the Drake Passage on August 21, 2025, later revised to 7.5 by the USGS.
The quake occurred at a depth of 10.8 kilometers, over 700 km southeast of Ushuaia, Argentina.
No tsunami threat was issued for Hawaii or other Pacific areas; Chile took precautions for its Antarctic territory.
Authorities reported no immediate damage or casualties.

History

Historical Context

The 1960 Valdivia earthquake, which struck Chile on May 22, remains the most powerful recorded quake at magnitude 9.5, causing widespread devastation and tsunamis. Chile's geological position along the Peru-Chile Trench makes it prone to seismic activity, with over 28 major earthquakes recorded in the 20th century. The recent 2025 Drake Passage earthquake, initially measured at 8.0, underscores ongoing seismic risks in the region.

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Story summary

An 8.0-magnitude earthquake hit the Drake Passage on August 21, 2025, later revised to 7.5 by the USGS.
The quake occurred at a depth of 10.8 kilometers, over 700 km southeast of Ushuaia, Argentina.
No tsunami threat was issued for Hawaii or other Pacific areas; Chile took precautions for its Antarctic territory.
Authorities reported no immediate damage or casualties.

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