By CBSLA Staff

LOS ANGELES (CBSLA) — Sunday marked the 27th anniversary of the deadly 1994 Northridge earthquake.

The 6.7 magnitude earthquake struck on Jan. 17, 1994, at 4:31 a.m., jolting San Fernando Valley residents awake.

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The earthquake killed 57 people and injured thousands more in the Los Angeles area, also causing billions of dollars in damages.

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RELATED: Earthquake Preparedness 101: How To Be Ready Before, During, After A Quake

Find more details about how to prepare for an earthquake, and what to include in your disaster kit, on L.A. County’s preparedness site.

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The ShakeAlert smartphone app will give you the heads up before a potentially dangerous earthquake. It is available for download in the iOS and Android app stores.