1668 North Anatolia earthquake
The 1668 North Anatolia earthquake was a very powerful earthquake that struck northcentral Anatolia in the Ottoman Empire (today Turkey) on August 17, 1668. The exact hour of the earthquake is not known, but it happened in late morning. It had an estimated magnitude between 7.8–8.0  and the maximum felt intensity was IX (Violent) on the Modified Mercalli intensity scale. The epicenter of the earthquake was on the southern shore of Ladik Lake, southwest of Samsun.