SECTION 4: RISK ASSESSMENT
methodology described in the FEMA publication Understanding Your Risks — Identifying Hazards and Estimating Losses (FEMA 386-2, 2002), which breaks the assessment down to a four-step process:
1. Identify Hazards
2. Profile Hazard Events
3. Inventory Assets
4. Estimate Losses
Data collected through this process has been incorporated into the following sections of this plan:
Section 4.2 : Hazard Identification identifies the natural and human-caused hazards that threaten the planning area. Section 4.3: Risk Assessment Methodology and Assumptions Section 4.4: Asset Inventory details the population, buildings, and critical facilities at risk within the planning area. Section 4.5 : Hazard Profiles, Analysis, and Vulnerability discusses the threat to the planning area, describes previous occurrences of hazard events and the likelihood of future occurrences, and assesses the planning area’s exp osure to each hazard profiled; considering assets at risk, critical facilities, and future development trends. Section 4.6: Conclusions on Hazard Risk summarizes the results of the Priority Risk Index and defines each hazard as a Low, Medium, or High Risk hazard.
4.2
HAZARD IDENTIFICATION
To identify hazards relevant to the planning area, the HMPC began with a review of the list of hazards identified in the 2018 State Hazard Mitigation Plan and the 2015 Wake County Multi-Jurisdictional Hazard Mitigation Plan as summarized in Table 4.1. The HMPC used these lists to identify a full range of hazards for potential inclusion in this plan update and to ensure consistency across these planning efforts. All hazards on the below list were evaluated for inclusion in this plan update. Table 4.1 – Full Range of Hazards Evaluated
Hazard
Included in 2018 State HMP? Included in 2015 Wake County HMP?
Flooding
Yes Yes
Yes Yes
Hurricanes and Coastal Hazards
Severe Winter Weather (Freezing Rain, Snowstorms, Blizzards, Wind Chill, Extreme Cold)
Yes
Yes
Extreme Heat Earthquake
Yes Yes Yes Yes
Yes Yes Yes Yes Yes Yes
Wildfire
Dam Failure
Levee Failure
No
Drought
Yes
Severe Thunderstorm (Tornado, Hailstorm, Torrential Rain, High Wind, Thunderstorm Wind, Lightning)
Yes (Hailstorm and Lightning evaluated as separate hazards)
Yes
Landslide Sinkholes
Yes Yes Yes Yes
Yes
No
Erosion
Yes Yes
Hazardous Materials Incident
Wake County Multi-Jurisdictional Hazard Mitigation Plan 2019
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