The earthquake triggered a tsunami with 0.2 meters (7.9 in) of runup that was recorded in Massacre Bay, Alaska, in the United States.

[7] Subduction occurs at a rate of 80 mm (3.1 in)/yr at the trench, increasing from north to south.

This subduction zone is associated with many large events throughout history, including earthquakes in 1737, 1841, 1923, and 1952.

The 1737 earthquake was likely the strongest event on the peninsula, with magnitudes reaching Mw  9.3 and tsunami run-ups reportedly exceeding 60 m (200 ft)[8] The 1841 event is considered slightly weaker, with maximum magnitude estimates reaching Mw  9.0–9.2, and the tsunami run-up was 15 m (49 ft).

[11] The resulting tsunami from this earthquake generated runups up to 18 m (59 ft) high.