NBC Friday is the 53rd anniversary of the 1971 San Fernando earthquake, which was recorded as magnitude 6.6. Also known as the Sylmar earthquake, it killed 64 people and caused over $500 million ...

The earthquake was felt by many Santa Clarita residents. Friday was the 53 rd anniversary of the 1971 Sylmar earthquake, which had a magnitude of 6.6, caused widespread damage in the Santa Clarita ...