1755 Lisbon earthquake
Also known as Lisbon earthquake
earthquake in 1755
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The 1755 Lisbon earthquake, also known as the Great Lisbon earthquake, hit the Iberian Peninsula and Northwest Africa on the morning of Saturday, 1 November, Feast of All Saints, at around 09:40 local time. In combination with subsequent fires and a tsunami, the earthquake almost completely destroyed Lisbon and adjoining areas. Seismologists estimate the Lisbon earthquake had a magnitude of 7.7 or greater on the moment magnitude scale, with its epicenter in the Atlantic Ocean about 200 km (110 nmi; 120 mi) west-southwest of Cape St. Vincent, a cape in the Algarve region, and about 290 km (160 nmi; 180 mi) southwest of Lisbon.
Chronologically, it was the third known large-scale earthquake to hit the city (following those of 1356 and 1531). Estimates place the death toll in Lisbon around 30,000–40,000. A further 10,000 may have died in Morocco.