The discrepancy was caused from the earthquake's long source duration of about 130 s, and by calculating the seismic moment, the magnitude would be Mw  7.6 or Mw  7.8, according to different sources.

[1][5] This earthquake belongs to a category of earthquakes with slow rupture velocities and potential of producing tsunamis larger than those expected from the moment magnitudes.

[6] A tsunami with a height of 9 meters (30 ft) was triggered and struck Puerto Eten, Lambayeque Department.

[7] The tsunami caused damage along the coast of the Lambayeque Department.

Thirteen deaths and 50 missing were reported in the Guañape Islands, La Libertad Department.