Stay calm. Do not panic.
If you are indoors:
Stay inside. Get under a desk or table or stand in an interior doorway or along an inner wall. Avoid windows and outside doors. Move away from shelves containing objects which may fall.
Do not use elevators.
After shock subsides, get outdoors, Stay well clear of buildings, trees and power lines. Watch for falling debris.
Be prepared for additional aftershocks. While these are typically smaller in intensity than the major quake, they may cause substantial damage to already weakened buildings.
If you are outdoors: Stay outside. Get into an open area away from trees, buildings, walls and power lines.
Be aware of the potential danger from gas leaks, downed power lines, broken glass and other hazards caused by the earthquake. Do not use matches, lighters, or lighted cigarettes until you are advised it is safe to do so.
Call 911 to report damage, injuries, gas leaks, or water leaks. Use a phone in a safe place.
Limit phone use to emergency use only.