a threat of a naturally occurring event (flood, tornado, hurricane, volcanic eruption, earthquake, heat-wave, landslide, etc.) that can have a negative effect on people, property or the environment.
A natural disaster can be defined as:
the devastating effect of a natural hazard that results in financial, environmental and/or human losses.
Example: Natural Hazard and Natural Disaster
- Image Source: http://volcanoes.usgs.gov/volcanoes/st_helens/st_helens_hazard_75.html [Accessed May 11, 2013]
- Image Source: http://vulcan.wr.usgs.gov/Glossary/StratoVolcano/description_composite_volcano.html [Accessed May 11, 2013]