Just five years earlier, the 6.9-magnitude 1989 Loma Prieta earthquake killed 63 people and caused about $6 billion in property damage in Northern California. Years earlier, the 1971 San Fernando ...

Some California earthquakes – between 6.6 and 7.8 – are the most famous in the nation’s memory. In 2019, a 7.1-magnitude quake hit near Ridgecrest, ... In 1971, a 6.6 earthquake hit Sylmar.

Two major earthquakes in 1971 and 1989 prompted additional legislation. The February 1971 Sylmar earthquake , centered in the San Fernando Valley, destroyed two hospitals, killing 65 and injuring ...