1880 Southern Luzon earthquakes
| Local date | |
|---|---|
| July 18, 1880 | |
| July 20, 1880 | |
| Local time | |
| 12:40 | |
| 15:40 | |
| 22:50 | |
| Duration | 70 seconds 45 seconds 35 seconds |
| Magnitude | |
| 7.0 Mw | |
| 7.6 Mw | |
| 7.2 Mw | |
| Depth | 2 km (1 mi) |
| Epicenter | 14°0′40″N 120°59′50″E / 14.01111°N 120.99722°E |
| Fault | Philippine Fault |
| Type | Strike-slip |
| Areas affected | Manila, Tayabas (now Quezon Province) |
| Total damage | Building collapsed, casualties |
| Max. intensity | RFS X (Extremely high intensity tremor) MMI XI (Extreme) |
| Tsunami | None |
| Landslides | Yes |
| Foreshocks | 5.0 Mww, 4.9 Mww |
| Aftershocks | 1,900 (833 felt) including 6.2 Mww Aftershock |
| Casualties | Unknown |
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The 1880 Southern Luzon earthquakes, were one of the most destructive tremors on record in the history of the country. The shocks continued, with greater or less interruption, from July 14–25, 1880; highlighted by three violent quakes measuring Mw 7.0, Mw 7.6, and Mw 7.2 respectively. The sequence destroyed churches and other buildings, producing loss of life. Coinciding with the tectonic activity was an increase in volcanic activity in the Taal Volcano of southwestern Luzon.
Manila, together with the provinces of Cavite, Bulacan, Laguna, Pampanga, and Nueva Ecija were the chief victims from the convulsions, with Manila and Laguna receiving the full brunt of the quakes. In many places, buildings were converted into shapeless heaps of ruins, and the materials of their prosperity buried beneath the rubbish.