1960 Valdivia earthquake
The 1960 Valdivia earthquake () or Great Chilean earthquake ("Gran terremoto de Chile") of 22 May is the most powerful earthquake ever recorded. Various studies have placed it at 9.4–9.6 on the moment magnitude scale. It occurred in the afternoon (19:11 GMT, 15:11 local time), and lasted approximately 10 minutes. The resulting tsunami affected southern Chile, Hawaii, Japan, the Philippines, eastern New Zealand, southeast Australia and the Aleutian Islands.
Uiju County
Ŭiju earthquake was a 5.3 magnitude earthquake that occurred in Ŭiju County in 1980. It is the largest earthquake by magnitude recorded in the Korean Peninsula since South Korea began official earthquake observation in 1978.