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Millions of people will "drop, cover and hold on" during a statewide earthquake simulation Thursday, including the Baldwin Park Unified School District.
The Great California ShakeOut is an annual event that aims to raise awareness about how to prepare for a major quake.
The ShakeOut will begin at 10:18 a.m., when participants across the state will practice what to do when an earthquake hits. More than 9 million people have registered to join the exercise so far, including 2.8 million in Los Angeles County. Find out who's participating here.
The ShakeOut is intended to simulate the impact of a magnitude-7.8 earthquake originating from the southernmost area of the San Andreas Fault. Under this scenario, a tectonic shift would produce waves of movement for hundreds of miles over four minutes.
—City News Service contributed to this report.