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Today in History: Hudson Volcano erupts, blankets 150,000 square kilometres in ash

8/8/2025

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Summary

Story summary

On August 8, 2011, Hudson Volcano in Chile erupted, releasing volcanic ash that spread across 150,000 square kilometers (58,000 square miles). This event marked a significant geological occurrence, as Hudson is the most active volcano in the Southern Volcanic Zone of the Andes, formed by the subduction of the Nazca Plate beneath the South American Plate.

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Story summary

On August 8, 2011, Hudson Volcano in Chile erupted, releasing volcanic ash that spread across 150,000 square kilometers (58,000 square miles). This event marked a significant geological occurrence, as Hudson is the most active volcano in the Southern Volcanic Zone of the Andes, formed by the subduction of the Nazca Plate beneath the South American Plate.