Pierce County
Wisconsin — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 42th
Pierce County faces very low composite natural disaster risk (NRI Risk Index score 42.3, 42th national percentile), driven primarily by strong wind and landslide exposure. Expected annual loss across all 18 hazard types is $19M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Strong Wind | Medium | 4.24 / yr | $2M |
| Landslide | Low | 0.27 / yr | $27K |
| Hail | Medium | 5.60 / yr | $1M |
| Tornado | Medium | 0.39 / yr | $4M |
| Cold Wave | Low | 8.63 / yr | $2M |
| Riverine Flood | Low | 0.46 / yr | $9M |
| Lightning | Low | 36.41 / yr | $292K |
| Winter Weather | Low | 16.63 / yr | $74K |
| Drought | Low | 3.81 / yr | $68K |
| Heat Wave | Very Low | 3.63 / yr | $256K |
| Ice Storm | Very Low | 0.34 / yr | $29K |
| Wildfire | Very Low | 0.00 / yr | $9K |
| Earthquake | Very Low | 0.00 / yr | $5K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Pierce County?
Pierce County has a composite FEMA National Risk Index score of 42.3 out of 100, placing it in the Very Low category and the 42th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Pierce County?
The three highest-rated hazards are Strong Wind (Medium, $2M EAL), Landslide (Low, $27K EAL), Hail (Medium, $1M EAL). These account for most of the county's expected annual losses.
How does Pierce County compare to other Wisconsin counties?
Pierce County ranks #58 of 72 Wisconsin counties for overall natural disaster risk, with a very low rating.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Pierce County's $19M EAL is a statistical average, not a guarantee for any specific year or address.