Hazard is any phenomenon that has the potential to cause disruption or damage to people and their environment. A hazard might lead to a disaster.

Hydrometeorological hazards

Natural processes or phenomena of atmospheric, hydrological or oceanographic nature

Geological hazards

Natural earth processes or phenomena that include processes of endogenous origin or tectonic or exogenous origin, such as mass movement.

Biological hazards

Processes of organic origin or those conveyed by biological vectors, including exposure to pathogenic micro-organisms, toxins and bioactive substances.