Johnson County, Iowa
FEMA National Risk Index threat assessment for Johnson County.
Threat Level
High
NRI Composite Score
14.1
Social Vulnerability
23.7
Community Resilience
56.6
Top Hazards
Tornado
27.5
Relatively High
Strong Wind
23.7
Relatively High
Cold Wave
21.7
Relatively Moderate
Hail
18.5
Relatively Moderate
Inland Flooding
16.3
Relatively Moderate
Ice Storm
8.8
Relatively Low
Drought
7.9
Relatively Low
Landslide
7.9
Relatively Low
Lightning
7.6
Very Low
Winter Weather
6.5
Very Low
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