They were part of a complex pattern of regional stress adjustment that also led to the 1999 Hector Mine earthquake.

Roughly 2,600 chimneys were destroyed, 20 homes were knocked off their foundations, and many unreinforced masonry structures partially or completely collapsed.

[7] Ruptured gas pipelines and dislodged fuel tanks caused by the tremor sparked fires that destroyed additional structures.

[3] The earthquake also caused landslides in the San Bernardino Mountains,[8] blocking several roadways and creating dust clouds that led many to believe forest fires were occurring.

[3] In total, approximately 40 percent of structures in the Big Bear area suffered some degree of damage,[7] amounting to more than $60 million in losses.