Disaster in Alexandria – July 21, 365 AD

In Alexandria, Egypt, the historian Ammianus Marcellinus described the events of July 21, 365 AD as “slightly after daybreak, and heralded by a thick succession of fiercely shaken thunderbolts, the solidity of the whole earth was made to shake…and the sea was driven away. The waters returning when least expected killed many thousands by drowning. Huge ships…perched on the roofs of houses… and others were hurled nearly two miles from the shore…”. The epicenter of the undersea earthquake was near the plate boundary called the Hellenic Arc, near Crete, and scientists propose it might have actually been two tremors in succession, the larger possibly being a magnitude of 8.0 in modern measurements. Nearly all of the coastal towns in Crete were destroyed by the earthquake as it pushed up parts o...

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