Do not dash for exits and never use elevators. Once in the open, stay there until the shaking stops. Do not stop near or under buildings, trees, overpasses or utility wires. Once the shaking has stopped, proceed with caution. Avoid bridges or ramps that might have been damaged by the quake.
Aftershocks can occur in the first hours, days, weeks or even months after the quake.
Check for and help injured or trapped persons. Give first aid when appropriate. Do not try to move the seriously injured unless they are in immediate danger of further injury. Call 911 for help if the telephone still work. Turn on battery-powered radio or television to get the latest emergency information.