On October 13th, 1963, at 5:17 UTC, an 8.5 magnitude earthquake ripped through Kuril Islands. The earthquake was followed by a 7.8 magnitude aftershock on October 20th, which was followed again by a tsunami. The fore-shock occurred on October 12th, 1963, with a magnitude of 6.7 for a total of 12 seconds. The damage done was less than a million dollars worth, and no deaths were recorded.
Map of the earthquake and tsunami.
The Kuril Islands island arc was formed up top from the subduction zone, where the Pacific plate is subducted beneath the Eurasian plate. Because of this cause, this site has been the target of many mega thrust earthquakes.