What are natural hazards?
An extreme event caused by nature that has the potential to cause damage to humans, properties and the environment.
A natural hazard is a natural event (for example, flood, volcanic eruption, earthquake, tropical storm) that threatens people or has the potential to cause damage, destruction and death.
Natural hazards are most commonly classified by the physical processes that caused them.
Tectonic hazards are created through the movement of the Earth’s tectonic plates.
Hazards to humans created in the atmosphere, such as tropical storms, droughts and tornadoes, are atmospheric hazards.
Hazards originating on or near the Earth’s surface, such as landslides, flooding and mudflows, are considered geomorphological hazards.
Hazards posed by living things, e.g. forest fires, are biological hazards.
Natural events, such as volcanic eruptions or earthquakes that occur away from humans and properties, are not considered natural hazards. They are considered natural hazards when they happen close to human populations and property.
Hazard risk is the probability or chance that a natural hazard may take place.
Different factors affect the hazard risk from natural hazards. These are:
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