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Ramsey County Multi-Hazard Mitigation Plan, 2018 Page | 32 Windstorms Erosion Earthquakes Tornadoes Land Subsidence (Sinkholes & Karst) *Addressed in the State Mitigation Plan because Minnesota is a heavily forested state compared to other states in Region V. 4.1.2 Vulnerability Assessment by Jurisdiction As part of the plan update process, the steering committee reviewed, updated and ranked the hazards faced by residents of Ramsey County, updated the existing mitigation actions published in the 2012 Multi-Hazard Mitigation Plan, and proposed new mitigation actions. To engage in this process, the committee drew on many data sources. First, the committee examined the hazards identified in the 2012 Hazard Mitigation Plan (Table 8). The natural hazards that pose risk to Ramsey County were discussed and adjusted to reflect the definitions of natural hazards used in the 2014 Minnesota State Hazard Mitigation Plan. This was done to assure that the risks faced by Ramsey County were categorized the same way as the priority hazards established by the State of Minnesota. Table 8. Hazards identified in the 2012 Ramsey County Multi-Hazard Mitigation Plan While the focus of this MHMP is on natural hazards, planning took place with the understanding that many technological hazards could occur because of natural disasters (i.e. disruption in electrical service due to freezing rain causing problems for both utility corporations and vulnerable populations dependent on electricity for heat). Ramsey County EMHS staff updated Appendix N Technological Hazards using subject matter experts and current research and are incorporated in this planning effort. This plan draws on a variety of data sources including the State of Minnesota and Homeland Security Emergency Management Critical Infrastructure Strategy for the State of Minnesota (2010), FEMA’s Local Mitigation Planning How-to Guide Integrating Manmade Hazards into Mitigation Planning (2003), and the State of Minnesota Multi Hazards Identification Risk Assessment. Ramsey County ranked hazards based on a Calculated Priority Risk Index, or CPRI, as part of the development of their 2017-2018 Threat Hazard Identification and Risk Assessment (THIRA). These rankings were considered by the steering committee in the process of ranking hazards for the MHMP update. The methodology of the CPRI is outlined below. 4.1.3 Calculated Priority Risk Index The vulnerability assessment builds upon the previously developed hazard information by identifying the community assets and development trends and intersecting them with the hazard profiles to assess the Natural Hazards Severe Winter Storms Severe Thunderstorms Tornadoes Lightning Extreme Temperatures Hailstorms Wildfires Flooding Drought Rockslides Epidemics/Pandemics (is not addressed by consultant) Dam Failure