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.
2009–19 Oklahoma earthquake swarms
A large earthquake of magnitude 5.0 occurred on the evening of November 6, with an epicenter located one mile (2 km) west of Cushing in Payne County. It was the fifth-largest earthquake recorded in state history. Following the quake, images of damage to buildings in Cushing began to surface on Twitter and local news reported that the Cushing Fire Department had been inundated with calls of damage, but no injuries had been reported. The Cimarron Tower assisted-living apartment building incurred damage, with part of the building collapsing, and all of its elderly residents were evacuated. Additional damage was inflicted on the First Presbyterian Church. Cushing Public Schools canceled Monday classes to allow for damage to be evaluated. The largest oil storage hub in the United States, located in Cushing, did not report any damage. According to the city manager of Cushing, 40 to 50 structures received damage.