1922 Shimabara earthquake

The 1922 Shimabara earthquake (島原地震) occurred in Kyushu, Japan on December 8, 1922. The mainshock (M6.9) was followed by a large aftershock (M6.5) 9 hours later.

Overview
At 01:50 a.m. on December 8, 1922 (local time), an M6.9 earthquake occurred in, Nagasaki Prefecture, Japan. About 9 hours later, at 11:02 a.m., the largest aftershock of M6.5 occurred in almost the same location as the first earthquake.

Impact and damage
The damage was severe in southern Nagasaki Prefecture (Shimabara Peninsula) and western Kumamoto Prefecture. In Nagasaki Prefecture, 26 people died of which 3 were due to the largest aftershock. The earthquake caused cracks in the ground and landslides. More than 2,000 houses were damaged.