The magnitude of this earthquake was given as Ms 7.4,[2] or ML 7.2.
[3] In the nearby region, the Cocos plate is subducting beneath the North American plate, however, this was an intraplate earthquake.
[4] The earthquake affected the states of Guerrero and Michoacán.
[5] The most affected places included Ciudad Altamirano, Cutzamala, Coyuca de Catalán, Tanganhuato, and Huertamo.
[3] The earthquake was also felt strongly and caused panic in Mexico City.