  March 27  March 28 March 28 June 9 | |
| Local date | March 27, 1638 |
|---|---|
| Local time | 20:00 to 21:00 |
| Magnitude | Mw 6.8–7.1 (March 27) |
| Depth | 15 km (9 mi) |
| Epicenter | 38°38′N 15°47′E / 38.64°N 15.78°E |
| Areas affected | Calabria, Kingdom of Naples (present-day Italy) |
| Max. intensity | MMI XI (Extreme) [1] |
| Tsunami | Uncertain |
| Casualties | 9,581–30,000[1][2] |
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.[3] 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.
- ^ a b "Significant Earthquake Information". ngdc.noaa.gov. NOAA National Centers for Environmental Information. Retrieved 13 February 2022.
- ^ Jacques et al. 2001.
- ^ Rovida, Andrea; Locati, Mario; Camassi, Romano; Lolli, Barbara; Gasperini, Paolo; Antonucci, Andrea (2022). "CPTI15 v3.0 Parametric Catalog of Italian Earthquakes". National Institute of Geophysics and Volcanology. doi:10.13127/CPTI/CPTI15.3. Retrieved 13 February 2022.