Millions of people across the world are expected to take part in Thursday's Great ShakeOut earthquake drill. ShakeOut spokesman Lance Webster says the event started six years ago in California.
"It's a drop, cover and hold on exercise for peopel to do wherever they are in their homes. But if you're in your car and driving when there's an earthquake you should get out from under any bridges, and pull over and stop," Webster said.
It will take place at 10:17 a.m. in each time zone and last for a minute.
"You also have the opportunity to review the many things you need to do to prepare in advance for a major earthquake -- or many other kinds of disasters as well," Webster said.
Organizers of the ShakeOut say the point is to immediately protect yourself since an earthquake may be so violent, running to another location may be impossible.
24 million people around the world are expected to participate in tomorrow's event to practice surviving an earthquake -- 9.5 million of those will be Californians.
"It's a moment in time when everybody can just spend a moment thinking specifically about what they are going to do the moment the ground starts to shake," Glenn Pomeroy of the California Earthquake Authority said.
Pomeroy says the key is to safety is the internationally recognized "Drop, Cover and Hold On" method.
"It's very important to drop to the ground, get low, cover -- get under a table if you can or at least cover their head with their hands because you don't want things falling from above and striking you in the head. And just hold on, wait until the ground stops shaking before you get up and leave the building," Pomeroy said.
California's fifth annual event is being held on the 24th anniversary of the Loma Prieta quake.