The 1915 Imperial Valley earthquakes were two destructive shocks centered near El Centro, California on June 22.

[2] In November, the area was struck by another larger shock, measuring Mw 7.0 centered in Cerro Prieto, Baja California, Mexico.

The Salton Trough is an active pull-apart basin forming due to offsets between the numerous strike-slip faults along its edges.

[5] Both shocks were equally severe; around the areas of El Centro and Calexico, buildings were heavily damaged, chimneys collapsed, and walls fell over.

Serious damage was reported in Calexico, Heber, and Mexicali, but the economic losses were fewer because El Centro was a much bigger community.

Nearly every brick building in the area were damaged, due to poor construction methods which could not withstand the earthquakes' intensity.

The two mainshocks were felt as far as San Bernardino and Los Angeles in the north, to Parker and Yuma, Arizona in the east, and south; in Ensenada, and likely beyond.

Widespread ground slumping, landslides, and liquefaction was reported around Cerro Prieto volcano, 20 km south of the epicenter.

Plumes of steam up to 200 meters in height were reported in Laguna de los Volcanoes, an uninhabitated area.