York County
Pennsylvania — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 90th
York County faces medium composite natural disaster risk (NRI Risk Index score 90.4, 90th national percentile), driven primarily by winter weather and riverine flood exposure. Expected annual loss across all 18 hazard types is $106M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Winter Weather | Very High | 12.21 / yr | $1M |
| Riverine Flood | High | 3.46 / yr | $69M |
| Strong Wind | High | 6.84 / yr | $3M |
| Lightning | High | 37.01 / yr | $2M |
| Hurricane | Medium | 0.09 / yr | $15M |
| Heat Wave | Medium | 5.26 / yr | $4M |
| Earthquake | Low | 0.00 / yr | $5M |
| Drought | Medium | 4.44 / yr | $2M |
| Landslide | Low | 0.98 / yr | $17K |
| Cold Wave | Medium | 1.16 / yr | $3M |
| Ice Storm | Medium | 1.15 / yr | $190K |
| Tornado | Low | 0.57 / yr | $1M |
| Wildfire | Very Low | 0.00 / yr | $34K |
| Avalanche | Very Low | 0.01 / yr | $69 |
| Hail | Very Low | 2.96 / yr | $103K |
| Coastal Flood | 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 York County?
York County has a composite FEMA National Risk Index score of 90.4 out of 100, placing it in the Medium category and the 90th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in York County?
The three highest-rated hazards are Winter Weather (Very High, $1M EAL), Riverine Flood (High, $69M EAL), Strong Wind (High, $3M EAL). These account for most of the county's expected annual losses.
How does York County compare to other Pennsylvania counties?
York County ranks #12 of 67 Pennsylvania counties for overall natural disaster risk, with a medium 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. York County's $106M EAL is a statistical average, not a guarantee for any specific year or address.