In geospatial risk assessment, how is 'hazard' best defined?

• A. The actual asset being damaged.
• B. The potential event or source of risk, such as a flood event, earthquake shaking, or wildfire ignition.
• C. The financial loss after mitigation.
• D. The weather forecast for the next hour.

Answer: (B)

Hazard is the potential event or source of harm that could cause damage at a location. It refers to the actual physical process or phenomenon that could produce adverse effects—think flood from rising river levels, ground shaking from an earthquake, or wildfire ignition and spread. It is about the possibility and characteristics of the damaging event (where, how strong, how often), independent of whether anything is present to be affected. In risk work, hazard combines with exposure (what is at risk) and vulnerability (how susceptible it is) to estimate overall risk. The asset being damaged is about exposure, not the initiating hazard, and financial loss after mitigation describes the consequence, not the hazard itself. A weather forecast can inform hazard assessment, but it isn’t the hazard defined on its own.