1787 Mexico earthquake
1787 CE.
Shown on the map at 16.500°, -98.500°.
The 1787 New Spain earthquake, also known as the San Sixto earthquake, occurred on 28 March at 11:30 local time (17:30 UTC). It caused a large tsunami that affected the coast of the Puebla Intendancy (includes the current state of Guerrero) and the Oaxaca Intendancy (currently Oaxaca) in Southwestern New Spain (currently part of Mexico). With an estimated magnitude of Mw 8.6, it is Mexico's most powerful instrumentally recorded earthquake.
Text from the Wikipedia article 1787 New Spain earthquake, licensed CC BY-SA 4.0.