SECTION 4: RISK ASSESSMENT
Category
Consequences
Continuity of Operations (including Continued Delivery of Services) Property, Facilities and Infrastructure
Potential impacts to continuity of operations due to storm impacts; delays in providing services
Possibility of structure fire ignition; potential for disruptions in power and communications infrastructure; destruction and/or damage to any exposed property, especially windows, cars and siding; mobile homes see increased risk Potential fire ignition from lightning; hail damage to wildlife and foliage Lightning damage contingent on target; can severely impact/destroy critical infrastructure and other economic drivers Public confidence is not generally affected by severe weather events.
Environment
Economic Condition of the Jurisdiction Public Confidence in the Jurisdiction’s Governance
HAZARD SUMMARY BY JURISDICTION The following table summarizes severe weather hazard risk by jurisdiction. Most aspects of severe weather risk do not vary substantially by jurisdiction; however, wind and hail impacts may be greater in more highly developed areas with higher exposure in terms of both property and population density. Additionally, mobile home units are more vulnerable to wind damage. While mobile home units do not comprise a significant proportion of any jurisdictions housing mix, Wake County, Wake Forest, Morrisville, Cary, and Raleigh each have over 250 mobile home units in their jurisdiction and therefore may face more severe impacts from wind. Where priority ratings vary between thunderstorm wind, lightning, and hail for impact and spatial extent, these scores represent an average rating with greater weight given to thunderstorm wind because it occurs much more frequently.
Spatial Extent
Warning Time
Jurisdiction
Probability
Impact
Duration
Score
Priority
Wake County
4 4 4 4 4 4 4 4 4 4 4 4 4
2
3 3 3 3 3 3 3 3 3 3 3 3 3
4 4 4 4 4 4 4 4 4 4 4 4 4
1 1 1 1 1 1 1 1 1 1 1 1 1
2.9 2.6 2.9 2.6 2.6 2.6 2.6 2.9 2.9 2.6 2.9 2.6 2.6
M M M M M M M M M M M M M
Apex Cary
1
2
Fuquay-Varina
1 1 1 1
Garner
Holly Springs Knightdale
Morrisville
2 2
Raleigh
Rolesville
1
Wake Forest
2
Wendell Zebulon
1 1
Wake County, NC Multi-Jurisdictional Hazard Mitigation Plan
WSP June 2024 Page 207
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