Wake County Hazard Mitigation Plan - January 2020

SECTION 4: RISK ASSESSMENT

Hazard

Included in 2018 State HMP? Included in 2015 Wake County HMP?

Radiological Emergency

Yes Yes Yes Yes Yes

Yes Yes No No

Terrorism

Infectious Disease

Cyber Threat

Electromagnetic Pulse

No

The HMPC evaluated the above list of hazards using existing hazard data, past disaster declarations, local knowledge, and information from the 2018 State Plan and the 2015 Wake County Plan to determine the significance of these hazards to the planning area. Significance was measured in general terms and focused on key criteria such as frequency and resulting damage, which includes deaths and injuries, as well as property and economic damage. One significant resource in this effort was t he National Oceanic and Atmospheric Administration‘s National Center for Environmental Information (NCEI), which has been tracking various types of severe weather since 1950. Their Storm Events Database contains an archive by county of destructive storm or weather data and information which includes local, intense and damaging events. NCEI receives storm data from the National Weather Service (NWS). The NWS receives their information from a variety of sources, which include but are not limited to: county, state and federal emergency management officials, local law enforcement officials, SkyWarn spotters, NWS damage surveys, newspaper clipping services, the insurance industry and the general public, among others. The NCEI database contains 783 records of severe weather events that occurred in Wake County in the 20-year period from 1998 through 2017. Table 4.2 summarizes these events. Table 4.2 – NCEI Severe Weather Reports for Wake County, 1998 – 2017

Type

# of Events

Property Damage

Crop Damage

Deaths

Injuries

Cold/Wind Chill

0 0 0 0

$0 $0 $0 $0

$0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0 $0

0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 1 4 0 0 0 0 9

0 0 0 0 0 0 0 1 0 0 0 0 0 0 0

Drought

Extreme Cold/Wind Chill

Excessive Heat

Flash Flood

117

$68,651,000

Flood

7

$60,000

Hail

209

$10,000,000

Heat

2 5 2 5 6 1

$0 $0 $0

Heavy Rain Heavy Snow High Wind Hurricane

$135,000 $910,000

Ice Storm Lightning

$0

33 12

$2,417,000

Strong Wind

$958,000

$5,000 $4,000 $25,000

Thunderstorm Wind

324

$2,956,250

12 70

Tornado

12

$116,028,000

Tropical Storm

2 1

$20,000

$0 $0 $0 $0

0 0 0 0

Wildfire

$1,000,000 $1,000,000

Winter Storm Winter Weather

25 19

$40,000

Total:

782

$204,175,250

$34,000

83

Source: National Center for Environmental Information Events Database, June 2018 Note: Losses reflect totals for all impacted areas for each event.

Wake County Multi-Jurisdictional Hazard Mitigation Plan 2019

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