1638 Calabrian earthquakes
1638 CE.
Shown on the map at 39.175°, 16.297°.
A series of mainshocks struck Calabria on March 27–28 and June 9, 1638. The first three earthquakes had moment magnitudes estimated to be Mw 6.6–7.1. On June 9, another mainshock estimated at Mw 6.7 struck the same region, causing further damage and casualties. The four earthquakes resulted in as many as 30,000 fatalities.
Text from the Wikipedia article 1638 Calabrian earthquakes, licensed CC BY-SA 4.0.