The earthquake triggered a tsunami with wave heights up to eight metres, causing damage as far away as Hawaii.

[2] The maximum perceived Mercalli intensity was XI (Extreme).

The earthquake happened 26 years before the U.S. had the capability to issue tsunami warnings, but Thomas Jaggar, the director of the Hawaiian Volcano Observatory, tried to warn the Hilo harbormaster about the possibility of a tsunami.

It generated a much larger tsunami with run-ups of up to 30 meters, killing at least 36 people.

[5] This earthquake is considered a doublet of the April event because its moment magnitude was recalculated to be at ~8.0.