Wake County Hazard Mitigation Plan - Adopted 10-21-2024

SECTION 4: RISK ASSESSMENT

Table 4.4 – Hazard Evaluation Results

Included in this plan update?

Hazard

Explanation for Decision

Natural Hazards

The 2019 Wake County plan addressed this hazard. There are 206 high hazard dams in Wake County. The 2019 Wake County plan addressed this hazard. The State Hazard Mitigation Plan lists drought as a hazard for the Piedmont region which includes Wake County. The 2019 Wake County plan and the State HMP addressed this hazard. Wake County could be impacted by the New Madrid fault and the Charleston fault. The 2019 Wake County plan and the State HMP address this hazard. NCEI reports 2 heat events for Wake County. The 2019 Wake County plan addressed this hazard. Multiple disaster declarations for the County are related to flooding. NCEI reports 224 flooding related events. Wake County is not exposed to coastal hazards; therefore storm surge, coastal flooding, and coastal erosion will not be assessed. However, past disaster declarations and NCEI storm reports indicate hurricane wind and rain are still a significant hazard for the County. The State HMP lists hurricane as a top hazard in the Piedmont region which includes Wake County. The 2019 Wake County plan addressed this hazard. The State HMP reports the entire State is equally at risk, but vulnerability is low across all but two impact categories. The 2019 Wake County plan did not address this hazard, but the HMPC decided to evaluate it with this plan update. The 2019 Wake County plan and 2023 State HMP addressed this hazard.

Dam Failure

Yes

Drought

Yes

Earthquake

Yes

Extreme Heat

Yes

Flood

Yes

Hurricane & Tropical Storm

Yes

Infectious Disease

Yes

Landslide

Yes

Severe Winter Weather (Freezing Rain, Snowstorms, Blizzards, Wind Chill, Extreme Cold) Severe Weather (Thunderstorm Wind, Lightning, Hail)

The 2019 Wake County plan and 2023 State plan addressed this hazard. Several past disaster and emergency declarations relate to this hazard.

Yes

The 2019 Wake County plan addressed this hazard. NCEI reports 562 wind related events, 41 lightning events, and 298 hail events in the past 25 years. Given this frequency, analysis is warranted. The 2019 Wake County plan addressed this hazard. NCEI reports 15 previous tornado events. Per the State HMP, vulnerability to tornado is high. Wake County has previously received a major disaster declaration for tornado. The 2019 Wake County plan addressed this hazard. There are areas of the county with high burn probability and moderate potential fire intensity.

Yes

Tornado

Yes

Wildfire

Yes

Wake County, NC Multi-Jurisdictional Hazard Mitigation Plan

WSP June 2024 Page 67

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