SECTION 4: RISK ASSESSMENT
Included in this plan update?
Hazard
Explanation for Decision
There are no known historical occurrences of major erosion and a low probability of future occurrence. The 2019 Wake County plan discussed erosion as a subset of wind and flood hazards. This approach will be carried forward. The USACE’s National Levee Database does not identify any USACE or non-USACE levees in Wake County. The 2019 Wake County plan did not address this hazard. Per the State HMP, vulnerability to sinkhole is low in the Piedmont region. The 2019 Wake County plan addressed this hazard and found it to be a moderate priority hazard to the planning area. The 2019 Wake County plan addressed this hazard and found it to be a high priority hazard to the planning area. The 2019 Wake County plan addressed this hazard and found it to be a moderate priority hazard to the planning area. The 2019 Wake County plan did not address this threat. The HMPC decided to evaluated cyber threat in this plan update. The 2019 Wake County plan did not address this threat. The HMPC considers this threat more appropriately addressed through emergency operations and response planning.
Erosion
No
Levee Failure
No
Sinkholes
No
Technological Hazards & Threats Hazardous Materials Incident Yes
Radiological Emergency
Yes
Terrorism
Yes
Cyber Threat
Yes
Electromagnetic Pulse
No
4.3 RISK ASSESSMENT METHODOLOGY AND ASSUMPTIONS
The Disaster Mitigation Act of 2000 requires that the HMPC evaluate the risks associated with each of the hazards identified in the planning process. Each hazard was evaluated to determine its probability of future occurrence and potential impact. A vulnerability assessment was conducted for each hazard using quantitative and/or qualitative methods depending on the available data, to determine its potential to cause significant human and/or monetary losses. A consequence analysis was also completed for each hazard.
Each hazard is profiled in the following format: HAZARD DESCRIPTION
This section provides a description of the hazard, including discussion of its speed of onset and duration, as well as any secondary effects followed by details specific to the Wake County planning area. LOCATION This section includes information on the hazard’s physical extent, with mapped boundaries where applicable. EXTENT This section includes information on the hazard extent in terms of magnitude, describe how the severity of the hazard can be measured. Where available, the most severe event on record used as a frame of reference.
Wake County, NC Multi-Jurisdictional Hazard Mitigation Plan
WSP June 2024 Page 68
Made with FlippingBook interactive PDF creator