Johnson County, Iowa
Natural Hazard Risk Assessment — Population: 152,809
87.4NRI
Relatively Moderate
Overall Risk Rating
👥
Population
152,809
🏠
Building Value
$34.1B
💰
Annual Hazard Loss
$96.3M
⚠️
Hazards Tracked
14
Natural Hazard Risk Profile
💨
Very HighStrong Wind
Annual Loss$10.5M
Risk Score98.9
🌪️
Relatively HighTornado
Annual Loss$36.2M
Risk Score98.2
🧊
Relatively HighHail
Annual Loss$4.4M
Risk Score95.3
🥶
Relatively HighCold Wave
Annual Loss$10.5M
Risk Score90.3
⛄
Relatively HighWinter Weather
Annual Loss$492K
Risk Score87.9
🌡️
Relatively ModerateHeat Wave
Annual Loss$3.5M
Risk Score87.5
☀️
Relatively ModerateDrought
Annual Loss$1.5M
Risk Score81.8
🌊
Relatively ModerateRiverine Flooding
Annual Loss$27.5M
Risk Score79.8
Show all 14 hazards
⛰️
Relatively LowLandslide
Annual Loss$20K
Risk Score79.1
❄️
Relatively ModerateIce Storm
Annual Loss$428K
Risk Score75.7
⚡
Relatively ModerateLightning
Annual Loss$830K
Risk Score74.5
🔥
Relatively LowWildfire
Annual Loss$164K
Risk Score64.4
🏔️
Very LowEarthquake
Annual Loss$294K
Risk Score45.1
🌀
Very LowHurricane
Annual Loss$5K
Risk Score13.6
Johnson County vs. National Average
🎯 Overall Risk
87.4+38.7 vs avg
National avg: 48.7
🔥 Wildfire Risk
64.4+15.7 vs avg
National avg: 48.7
👥 Social Vulnerability
11.4-37.8 vs avg
National avg: 49.2
🛡️ Community Resilience
96.7+48.0 vs avg
National avg: 48.7
Community Profile
Social Vulnerability
11.4
Very LowHigher scores indicate greater social vulnerability to natural hazards.
Community Resilience
96.7
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.