The Storegga Slide tsunami was generated off the coast of Norway. The slide occurred at the edge of Norway’s continental shelf in the Norwegian Sea, northwest of the Møre coast.
Storegga was not a single ordinary coastal landslide but a series of enormous submarine slope failures. Around 6225–6170 BCE, roughly 290 kilometres of continental shelf collapsed, displacing an estimated 3,500 cubic kilometres of sediment and generating a paleotsunami across the North Atlantic.
Geological tsunami deposits have been identified in Norway, Scotland, the Faroe Islands and elsewhere. The wave also affected the prehistoric landscape known as Doggerland, although researchers distinguish the tsunami’s temporary flooding from Doggerland’s later, gradual submergence as sea level rose. The name Storegga means “Great Edge” in Norwegian.