Gloucester County
New Jersey — Natural Disaster Risk Assessment
MediumComposite Risk Score
National percentile: 87th
Gloucester County faces medium composite natural disaster risk (NRI Risk Index score 86.6, 87th national percentile), driven primarily by strong wind and winter weather exposure. Expected annual loss across all 18 hazard types is $77M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Strong Wind | High | 5.79 / yr | $5M |
| Winter Weather | Very High | 10.69 / yr | $1M |
| Heat Wave | Medium | 11.11 / yr | $6M |
| Earthquake | Low | 0.00 / yr | $6M |
| Ice Storm | High | 0.89 / yr | $983K |
| Riverine Flood | Medium | 2.57 / yr | $40M |
| Coastal Flood | High | 3.69 / yr | $4M |
| Hurricane | Medium | 0.11 / yr | $4M |
| Lightning | High | 34.54 / yr | $1M |
| Wildfire | Low | 0.00 / yr | $498K |
| Cold Wave | Medium | 0.79 / yr | $4M |
| Drought | Medium | 7.14 / yr | $1M |
| Tornado | Medium | 0.15 / yr | $3M |
| Landslide | Very Low | 0.08 / yr | $1K |
| Hail | Low | 2.01 / yr | $235K |
| Avalanche | 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 Gloucester County?
Gloucester County has a composite FEMA National Risk Index score of 86.6 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 Gloucester County?
The three highest-rated hazards are Strong Wind (High, $5M EAL), Winter Weather (Very High, $1M EAL), Heat Wave (Medium, $6M EAL). These account for most of the county's expected annual losses.
How does Gloucester County compare to other New Jersey counties?
Gloucester County ranks #16 of 21 New Jersey 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. Gloucester County's $77M EAL is a statistical average, not a guarantee for any specific year or address.