Natural Disasters and Societal Vulnerability

Natural Disasters and Natural Hazards

Natural hazards are natural phenomena that may negatively affect people, animals, property, or the environment. Examples include earthquakes, floods, droughts, tropical cyclones, volcanic eruptions, landslides, avalanches, wildfires, heat waves, tsunamis, tornadoes, and severe storms. A hazard becomes a disaster when it affects an exposed and vulnerable community and causes significant disruption, deaths, injuries, property damage, economic losses, livelihood disruption, or environmental harm. The severity of a disaster depends on factors such as preparedness, building quality, infrastructure, land-use planning, communication systems, and access to emergency services. The term "natural disaster" is criticized because disasters are rarely caused by nature alone. Human decisions and actions—including inadequate construction standards, environmental degradation, deforestation, poor resource management, marginalization, urban sprawl, and insufficient disaster planning—can increase vulnerability and worsen impacts. Climate change is also influencing the frequency and intensity of several hazards, including floods, heat waves, wildfires, droughts, and tropical cyclones. Effective disaster risk reduction therefore focuses on preparedness, resilient infrastructure, early warning systems, responsible development, and reducing social and economic vulnerability.

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Vulnerability, Exposure, and Disaster Risk

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