Northumberland County
Pennsylvania — Natural Disaster Risk Assessment
LowComposite Risk Score
National percentile: 79th
Northumberland County faces low composite natural disaster risk (NRI Risk Index score 79.2, 79th national percentile), driven primarily by winter weather and riverine flood exposure. Expected annual loss across all 18 hazard types is $37M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Winter Weather | High | 12.79 / yr | $404K |
| Riverine Flood | Medium | 1.25 / yr | $30M |
| Strong Wind | High | 3.60 / yr | $1M |
| Landslide | Low | 0.51 / yr | $21K |
| Hurricane | Low | 0.06 / yr | $2M |
| Lightning | Medium | 34.16 / yr | $485K |
| Earthquake | Low | 0.00 / yr | $512K |
| Heat Wave | Low | 2.84 / yr | $512K |
| Ice Storm | Low | 0.34 / yr | $73K |
| Cold Wave | Low | 1.42 / yr | $800K |
| Tornado | Low | 0.20 / yr | $1M |
| Avalanche | Very Low | 0.01 / yr | $282 |
| Wildfire | Very Low | 0.00 / yr | $14K |
| Hail | Very Low | 1.84 / yr | $64K |
| 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 Northumberland County?
Northumberland County has a composite FEMA National Risk Index score of 79.2 out of 100, placing it in the Low category and the 79th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Northumberland County?
The three highest-rated hazards are Winter Weather (High, $404K EAL), Riverine Flood (Medium, $30M EAL), Strong Wind (High, $1M EAL). These account for most of the county's expected annual losses.
How does Northumberland County compare to other Pennsylvania counties?
Northumberland County ranks #25 of 67 Pennsylvania counties for overall natural disaster risk, with a 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. Northumberland County's $37M EAL is a statistical average, not a guarantee for any specific year or address.