earthquake
Hazard Guide
Earthquake
Ground shaking events that can cause structural damage, injuries, and cascading hazards.
Overview
Understanding Earthquake
Earthquakes may occur without warning. Personal readiness and safer building practices reduce harm.
Overview
Summary
An earthquake is the sudden shaking of the ground caused by the movement of tectonic plates beneath the Earth's surface. Earthquakes can damage buildings, roads, and infrastructure, trigger landslides or tsunamis, and pose serious risks to human life.
Preparedness
Preparedness
Being prepared can save lives during an earthquake:
- Learn if your area is prone to seismic activity.
- Secure heavy furniture, appliances, and other items that could fall during shaking.
- Prepare an emergency kit with essentials such as water, food, first aid supplies, flashlights, and important documents.
- Identify safe spots in each room, such as under sturdy tables or against interior walls away from windows.
- Develop a family emergency plan, including meeting points and communication methods.
Response
Response
During an earthquake:
- Drop, cover, and hold on—get under a sturdy table or desk, protect your head, and stay in place until shaking stops.
- Stay away from windows, mirrors, and heavy objects that may fall.
- If outdoors, move to an open area away from buildings, trees, and power lines.
- After the shaking stops, check yourself and others for injuries, and be prepared for aftershocks.
- Follow instructions from authorities and avoid entering damaged buildings.
Prevention
Risk Reduction
While earthquakes cannot be prevented, their impact can be reduced by:
- Constructing buildings according to earthquake-resistant codes and standards.
- Retrofitting older buildings and infrastructure to withstand seismic activity.
- Educating communities about safe behavior during and after earthquakes.
- Avoiding construction on steep slopes, loose soil, or other high-risk areas.