Megatsunami
Time: May, 1792
Place: Shimabara Peninsula of Nagasaki Prefecture, Japan
Details: It is not known to this day whether the collapse occurred as a result of an eruption of the dome or as a result of the earthquakes. The tsunami struck Higo Province on the other side of Ariake Bay before bouncing back and hitting Shimabara again. Out of an estimated total of 15,000 fatalities, around 5,000 are thought to have been killed by the landslide, around 5,000 by the tsunami across the bay in Higo Province, and a further 5,000 by the tsunami returning to strike Shimabara. The waves reached a height of 33–66 ft (10–20 m), classing this tsunami as a small megatsunami. At the Osaki-bana point Futsu town, the waves locally grew to a height of 187 ft (57 m) due to the effect of sea bottom topography.
Best-effort ordering. Some events may appear out of order since many are only known to the year, but they are usually around the same period.
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