It is the first event in a sequence of large earthquakes that would re-rupture the subduction zone. Subsequent events would follow-up in 1958, 1979 and 1998. The recent 2016 event was a repeat of the 1942 earthquake. This was similar to what was observed in Sumatra, Indonesia in the beginning of the 21st century with multiple earthquakes rupturing the Sunda subduction zone rather than in one large event.