Lee County Vulnerability Analysis (as of December 2013) ​ ​ ​

Event

Recurrence

% Effected Population

Vulnerable Population

Tropical Storms and Hurricanes ​ ​ ​

Sustained Wind (40 to 74 mph) *1 - 3 years100%640,000
Sustained Wind (75 to 111 mph) *4 - 7 years100%640,000
Sustained Wind (112+ mph) *10 - 20 years100%640,000
Storm Surge Flooding (8 ft. or less) *3 - 5 years20%128,000
Storm Surge Flooding (more than 8 ft.) *10 - 20 years95%608,000

Other Weather ​ ​ ​

Lightening Fatality *every year100%640,000
Thunderstorm Winds *every year100%640,000
Hail *every year100%640,000
Tornado (wind less than 112 mph) *every year100%640,000
Tornado (wind greater than 112 mph) *3 - 5 years100%640,000
Sheet flow Floodingevery year30%192,000
Flood (minor) *1 - 3 years30%192,000
Flood (major) *5 - 15 years50%320,000
Extreme Heat (heat index > 105) *every year100%640,000
Extreme Cold (wind chill < 40) *every year100%640,000

Agricultural ​ ​ ​

Drought *3 - 5 years100%640,000
Exotic pests and disease (plants) *1 - 3 years20%128,000
Exotic pests and disease (animals) *1 - 3 years20%128,000
Frost/Winter Storm/Moderate Freeze *every year100%640,000
Severe Freeze *5 - 15 years100%640,000

Spills and Releases ​ ​ ​

Hazardous Material Release (Highway)3 - 5 years20%128,000
Hazardous Material Release (Rail)5 - 15 years20%128,000
Hazardous Material Release (Marine)5 - 15 years20%128,000
Hazardous Material Release (Fixed Facility)5 - 15 years20%128,000
Oil/Chemical Spill (Gulf/Coastal)5 - 15 years20%128,000
Oil/Chemical Spill (River/Estuarine)5 - 15 years20%128,000
Radiological-Transportation Related50+ years100%640,000
Radiological-Fixed Facility50+ years100%640,000

Fire ​ ​ ​

Urban/Major Structure Fire4 - 7 years50%320,000
Forest Fire/Wildfire (major) *1 - 3 years40%256,000
Forest Fire/Wildfire (minor) *every year55%352,000
​ ​ ​ ​

Criminal / Terrorism​ ​ ​ ​

​Chemical/Biological Attack​50+ years​100%​640,000
​Bomb / Incendiary Attack​10 - 20 years​100%​640,000
​Nuclear / Radiological Attack​100+ years​100%​640,000
​Cyber Attack (Internet, computers, data)​1 -3 years​100%​640,000
​ ​ ​ ​

Transportation / Infrastructure​ ​ ​ ​

​Aircraft Crash (commercial)​10 - 20 years​5%​32,000
​Aircraft Crash (private)​1 - 3 years​15%​96,000
​Major Transportation Route/Bridge Failure​50+ years​100%​640,000
​Major Pipeline Failure​50+ years​100%​640,000
​Major Power Failure​3 - 5 years​100%​640,000
​Dam / Levee Failure *​100+ years​1%​6,400
​Mass Immigration​50+ years​10%​64,000
​Civil Disturbance​10 - 20 years​10%​64,000
​Special Events​every year​100%​640,000
​ ​ ​ ​

Miscellaneous Natural Disasters​ ​ ​ ​

​Epidemic / Pandemic Disease​10 - 20 years​100%​640,000
Coastal Erosion *​​every year​2%​12,800
​Sinkholes / Subsidence *​100+ years​100%​640,000
​Earthquake *​100+ years​100%​640,000
​Tsunami *​100+ years​30%​192,000
Volcano​​100+ years​100%​640,000

Estimated County Population       640,000​ ​ ​

*  - items are addressed in the Local Mitigation Strategy​ ​ ​ ​