Ancash (Chimbote) Peru 1970 (ERNAL)
The Peru earthquake of May 31st 1970, was by far the most destructive historic earthquake in the Western Hemisphere and ranks high among the world's catastrophic natural disasters. Within an area of about 65,000 square kilometers in west central Perú the earthquake took an estimated 70,000 lives, caused 50,000 injuries, and destroyed or rendered uninhabitable roughly 186,000 buildings, respresenting 80% of all structures in the area (statistics from Comité Nacional de Emergencia del Perú, July 2nd, 1970). Within the affected area many landslides and one cataclysmic debris avalanche disrupted communications and temporaly blocked ground access to many of the afflicted communities in the Andes Mountains. The single, most devastating event was the large debris avalanche that originated from the north peak of Huascaran, fallin 12,000 ft and traveling 7 miles at an average speed of roughly 200 miles per hour to destroy the villages of Yungay and Ranrahirca. Damage resulting from vibrational effects was severe. The most intense vibrational damage occurred along the coast at Chimbote and Casma where most houses and buildings of adobe construction were destroyed or severely damage.
The number killed excluding those missing
530 mill US$ (NGDC)