Manassas City
Virginia — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 17th
Manassas City faces very low composite natural disaster risk (NRI Risk Index score 16.6, 17th national percentile), driven primarily by hurricane and heat wave exposure. Expected annual loss across all 18 hazard types is $7M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Hurricane | Low | 0.08 / yr | $417K |
| Heat Wave | Low | 5.79 / yr | $626K |
| Earthquake | Very Low | 0.00 / yr | $436K |
| Lightning | Low | 41.04 / yr | $320K |
| Strong Wind | Low | 7.07 / yr | $602K |
| Winter Weather | Low | 9.53 / yr | $56K |
| Riverine Flood | Very Low | 0.57 / yr | $4M |
| Tornado | Low | 0.01 / yr | $533K |
| Hail | Very Low | 3.77 / yr | $116K |
| Ice Storm | Very Low | 0.54 / yr | $14K |
| Cold Wave | Very Low | 1.37 / yr | $84K |
| Landslide | Very Low | 0.00 / yr | $2 |
| Wildfire | Very Low | 0.00 / yr | $333 |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Drought | Very Low | 1.39 / 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 Manassas City?
Manassas City has a composite FEMA National Risk Index score of 16.6 out of 100, placing it in the Very Low category and the 17th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Manassas City?
The three highest-rated hazards are Hurricane (Low, $417K EAL), Heat Wave (Low, $626K EAL), Earthquake (Very Low, $436K EAL). These account for most of the county's expected annual losses.
How does Manassas City compare to other Virginia counties?
Manassas City ranks #91 of 133 Virginia 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. Manassas City's $7M EAL is a statistical average, not a guarantee for any specific year or address.