For the Valley 31 years later, the 1994 Northridge earthquake was a defining moment, testing the resilience of its residents and the strength of its community institutions.

Twenty-five years ago today, a 6.7-magnitude earthquake struck Northridge ... a look at what that kind of devastation did to Los Angeles in 1994.

At exactly 4:30:55 a.m. on Jan. 17, 1994, Los Angeles was rocked by a magnitude 6.7 earthquake that caused catastrophic damage, particularly near the epicenter in the San Fernando Valley.

At exactly 4:30:55 a.m. on Jan. 17, 1994, Los Angeles was rocked by a magnitude 6.7 earthquake that caused catastrophic damage, particularly near the epicenter in the San Fernando Valley.