Isoseismal map for the earthquake north-east of Denver - 9 August 1967 - MMI VII. (detail) Geology, Hazards August 9, 1967 Case Study: Denver – August 9, 1967 Major magnitude 5.3 earthquake shock in Denver One of the strongest and most economically damaging earthquakes to affect the Denver area in the 1960s occurred on August 9, 1967 around 6:30 AM, awakening and frightening thousands of people. This magnitude 5.3 earthquake, centered near Commerce…