If you're indoors
Stay indoors when tremors start.
Get under a sturdy table, desk or bed, or stand in a doorway or an inside corner next to an interior wall.
Keep away from windows, mirrors, glass, bookcases, light fittings, tall cabinets and fireplaces.
If you're outdoors
Get into an open area; avoid buildings, walls, power lines and trees.
If you're in a car, stop - but stay inside until the tremors stop. Avoid bridges and power lines.
Afterwards
Be on guard for smaller aftershocks that can cause additional damage.
Apply first aid to any injuries.
Check the building for structural damage, fires and damage to utility lines and electric appliances. Open doors and cabinets carefully.
If you smell gas, open all doors and windows, leave the house, and report the leak to the gas company.
If electrical wires cause short circuits or fittings have become loose, switch off the power.