The State Risk Project began in 2013 with the assessment of credible worst case and near worst case scenarios for seven sudden onset natural hazards. These were bushfire, cyclone, earthquake, flood, heatwave, storm and tsunami. The results of these risk analyses are summarised in the Seven Sudden Onset Natural Hazard Report.
Since 2014 the state has continued risk analyses at the state level assessing marine transport emergency and oil pollution, air crash, animal and plant biosecurity and human epidemic. The potential hazard of telecommunication disruption was also assessed and three actual events (Cyclone Christine, the Parkerville Fire and the Kununurra Floods) were reviewed using the same criteria.
The State will now continue risk assessments for:
Fuel supply disruptionGas supply disruptionHAZMATLandform collapseNuclear powered warshipRail crash freightRail crash passengerSpace re-entry debrisStructure collapseStructure fire
Analysis of the hazards assessed to date reveals no risk statements presenting as extreme risks. However 18.6% presented a high risk, while 36.5% presented a medium risk. The remaining 44.9% of statements were assessed as low or very low risks. Further information on the criteria used to determine risk level can be found in the Western Australia Emergency Risk Assessment Guide.
The NERAG risk matrix below provides an overview of the hazards assessed at the state level. The matrix displays the percentage of risk statements from each hazard which fall into the relevant section. For example 40% of all Flood statements assessed fall into the Possible, Moderate box resulting in a medium risk level.