IA
Iowa
Comprehensive climate risk and disaster history profile
60
Billion-Dollar Events
$21.1B
Total Economic Impact
99
Counties
48.31
Avg Risk Score
Top Natural Hazards
Based on FEMA National Risk Index data across all 99 counties
Drought
84.12
Avg Risk Score
Hail
78.0
Avg Risk Score
Strong Wind
75.64
Avg Risk Score
Freeze
75.55
Avg Risk Score
Winter Storm
66.93
Avg Risk Score
Tornado
63.08
Avg Risk Score
Disaster Type Breakdown
Historical billion-dollar events by category (1980-2024)
Severe Storm
47 events
$14.0B
Drought
7 events
$3.5B
Flooding
4 events
$3.5B
Freeze
1 events
$0.1B
Winter Storm
1 events
$0.0B
Disaster Trends by Decade
How disaster frequency and costs have changed over time
Highest Risk Counties
Counties with the highest overall risk scores based on FEMA NRI
| Rank | County | Risk Score | Risk Rating | SVI Percentile |
|---|---|---|---|---|
| 1 | Johnson | 93.19 | 3511.0% | |
| 2 | Linn | 91.73 | 1935.0% | |
| 3 | Polk | 91.54 | 4574.0% | |
| 4 | Pottawattamie | 83.58 | 4892.0% | |
| 5 | Woodbury | 83.46 | 6521.0% | |
| 6 | Scott | 82.06 | 2982.0% | |
| 7 | Black Hawk | 81.71 | 5290.0% | |
| 8 | Dubuque | 77.86 | 2225.0% | |
| 9 | Story | 76.01 | 2820.0% | |
| 10 | Webster | 75.18 | 4061.0% |
Recent Major Events
Most costly billion-dollar disasters in the past 10 years
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