Erratic Animal Behaviour - frightened or confused pets running around, or bird-calls not usually heard at night.
Ground-Water Levels - sudden changes of water level in wells or artesian bores.
If indoors stay there. There could be falling debris outside. Take cover under an internal door frame, sturdy table, bench or bed.
Keep away from windows, mirrors, overhead fittings and tall furniture.
In multi-storey buildings, stay clear of windows and outer walls. Get under a desk near a pillar or internal wall. Do not use elevators.
In crowded areas, do not rush for doors. Stay clear of roof and wall fittings.
If outside, keep well clear of buildings, walls, power lines, trees, etc.
In a city street, with tall buildings, shelter from falling debris under strong archways or doorways of buildings. Don't stand under awnings or parapets as they may collapse.
If in a vehicle, stop in the open until shaking stops. Beware of 'downed' powerlines and damage to roads, overpasses or bridges. Listen to radio for warnings before moving.
Check for injuries, apply first aid. Do not move the seriously injured unless in danger.
Do not use telephone (avoid congestion) unless there is a serious injury or fire.
Turn off electricity, gas and water.
Check for gas/fuel leaks before lighting matches, using naked flames or operating electrical equipment including light switches
Check for water or sewerage leaks, broken electrical wiring etc.
Check for cracks and damage, including roof and foundation.
Be prepared for aftershocks. Evacuate the building if it is badly damaged.
Do not waste food and water as supplies may be interrupted.
Collect emergency water from any available source; segregate drinking and non-drinking supplies.
Listen to local radio and heed warnings and advice on damage and service disruptions.
Avoid driving unless for emergency (keep streets clear for emergency vehicles).
Do not go sight-seeing or enter damaged buildings.
Stay calm and help others.
Be a resource not a casualty