Broome County
New York — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 87th
Broome County faces medium composite natural disaster risk (NRI Risk Index score 87.5, 87th national percentile), driven primarily by riverine flood and winter weather exposure. Expected annual loss across all 18 hazard types is $60M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Riverine Flood | Medium | 3.43 / yr | $49M |
| Winter Weather | High | 16.32 / yr | $377K |
| Lightning | High | 30.74 / yr | $795K |
| Tornado | Medium | 0.20 / yr | $4M |
| Hurricane | Low | 0.03 / yr | $1M |
| Landslide | Low | 0.71 / yr | $9K |
| Ice Storm | Medium | 0.49 / yr | $248K |
| Cold Wave | Medium | 3.68 / yr | $2M |
| Heat Wave | Low | 2.84 / yr | $828K |
| Earthquake | Low | 0.00 / yr | $650K |
| Strong Wind | Medium | 1.37 / yr | $564K |
| Hail | Low | 2.47 / yr | $225K |
| Wildfire | Very Low | 0.00 / yr | $18K |
| Avalanche | Very Low | 0.01 / yr | $33 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Drought | 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 Broome County?
Broome County has a composite FEMA National Risk Index score of 87.5 out of 100, placing it in the Medium category and the 87th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Broome County?
The three highest-rated hazards are Riverine Flood (Medium, $49M EAL), Winter Weather (High, $377K EAL), Lightning (High, $795K EAL). These account for most of the county's expected annual losses.
How does Broome County compare to other New York counties?
Broome County ranks #16 of 62 New York 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. Broome County's $60M EAL is a statistical average, not a guarantee for any specific year or address.