On July 30, one of the largest earthquakes ever recorded struck off the Kamchatka peninsula, in Russia’s far east. Within minutes, tsunami warnings were issued in Russia, much of Asia and across the Pacific in Hawaii, New Zealand and California.
But this wasn’t the first time a huge tsunami had hit Kamchatka. In 1952, an even more powerful earthquake hit the same fault line – but it was kept hidden from the world.
Kamchatka is no stranger to seismic activity, with a large earthquake occurring as recently as 2020 (the fourth most powerful anywhere in the world that year). However, only the biggest earthquakes can create large destructive tsunamis and cause Pacific-wide warnings like those experienced on Wednesday.