The 1867 Keelung earthquake occurred off the northern coast of Taiwan on the morning of December 18 with a magnitude of 7.0.

A tsunami, thought to be the only confirmed destructive of its kind in Taiwan, drowned hundreds and had a run-up exceeding 15 m (49 ft).

Taiwan lies at the junction of the two subduction zones, on the edge of the Asian continental margin (Eurasian plate), where the northwest–southeast convergence rate is estimated to be 7 cm/year.

Continental crust of the Eurasian plate is being subducted beneath the island, forming east-dipping thrust faults.

[2] The lack of historical documentation of the tsunami effects made identifying the fault difficult.

[2] In a 2017 study by Sugawara and others, modelling of the earthquake suggest a 7.24 Mw  event with coseismic slip of 6 meters was required to reproduce the tsunami heights reported.

[5] The earthquake occurred at 09:00 or 10:00 local time and produced shaking that lasted 15–30 seconds.

Heavy damage was reported at Keelung where collapses buried several hundred residents.

In Tamsui, homes collapsed, killing 30,[1] and a British merchant warehouse was extensively damaged.

The high run-up at Jinbaoli Old Street was due to a river which allowed waves from the sea to flow upstream.

Tsunami damage at Keelung was minimal and only affected the immediate coastal parts of the city.

[9] It is thought to be the only instance of an earthquake, tsunami and eruption occurring at the same time in the region.