Charleston County, South Carolina
Natural Hazard Risk Assessment — Population: 407,722
98.6NRI
Relatively High
Overall Risk Rating
👥
Population
407,722
🏠
Building Value
$96.5B
💰
Annual Hazard Loss
$499.8M
⚠️
Hazards Tracked
16
Natural Hazard Risk Profile
🏖️
Very HighCoastal Flooding
Annual Loss$35.6M
Risk Score99.8
🌀
Very HighHurricane
Annual Loss$281.3M
Risk Score99.6
🏔️
Relatively HighEarthquake
Annual Loss$118.0M
Risk Score98.8
❄️
Relatively HighIce Storm
Annual Loss$1.8M
Risk Score94.5
🔥
Relatively ModerateWildfire
Annual Loss$3.1M
Risk Score93.9
⚡
Relatively HighLightning
Annual Loss$1.7M
Risk Score92.6
🌊
Relatively ModerateRiverine Flooding
Annual Loss$44.2M
Risk Score89.9
🥶
Relatively ModerateCold Wave
Annual Loss$6.6M
Risk Score87.1
Show all 16 hazards
⛄
Relatively ModerateWinter Weather
Annual Loss$301K
Risk Score84.2
🌡️
Relatively ModerateHeat Wave
Annual Loss$2.0M
Risk Score82.7
💨
Relatively ModerateStrong Wind
Annual Loss$1.7M
Risk Score82.5
🌪️
Relatively ModerateTornado
Annual Loss$3.0M
Risk Score71.0
🧊
Relatively LowHail
Annual Loss$451K
Risk Score60.9
⛰️
Very LowLandslide
Annual Loss$650
Risk Score37.7
☀️
Relatively LowDrought
Annual Loss$50K
Risk Score35.4
🌊
Insufficient DataTsunami
Annual Loss$0
Risk Score0.0
Charleston County vs. National Average
🎯 Overall Risk
98.6+49.9 vs avg
National avg: 48.7
🔥 Wildfire Risk
93.9+45.2 vs avg
National avg: 48.7
👥 Social Vulnerability
22.4-26.8 vs avg
National avg: 49.2
🛡️ Community Resilience
96.1+47.4 vs avg
National avg: 48.7
Community Profile
Social Vulnerability
22.4
Relatively LowHigher scores indicate greater social vulnerability to natural hazards.
Community Resilience
96.1
Very HighHigher scores indicate better ability to prepare for, adapt to, and recover from hazards.
Frequently Asked Questions
Data from FEMA National Risk Index. For informational purposes only. Consult local authorities for property-specific risk.