Jefferson County
Oklahoma — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 21th
Jefferson County faces very low composite natural disaster risk (NRI Risk Index score 20.9, 21th national percentile), driven primarily by drought and wildfire exposure. Expected annual loss across all 18 hazard types is $5M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Drought | High | 61.55 / yr | $1M |
| Wildfire | Low | 0.00 / yr | $218K |
| Strong Wind | Medium | 3.85 / yr | $581K |
| Ice Storm | Medium | 1.33 / yr | $94K |
| Tornado | Low | 0.70 / yr | $918K |
| Heat Wave | Low | 19.63 / yr | $236K |
| Hail | Low | 10.13 / yr | $117K |
| Earthquake | Very Low | 0.00 / yr | $67K |
| Hurricane | Very Low | 0.01 / yr | $11K |
| Cold Wave | Low | 1.16 / yr | $195K |
| Landslide | Very Low | 0.11 / yr | $86 |
| Winter Weather | Very Low | 6.47 / yr | $10K |
| Riverine Flood | Very Low | 0.86 / yr | $1M |
| Lightning | Very Low | 52.50 / yr | $14K |
| Avalanche | Very Low | 0.00 / yr | $0 |
| 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 Jefferson County?
Jefferson County has a composite FEMA National Risk Index score of 20.9 out of 100, placing it in the Very Low category and the 21th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Jefferson County?
The three highest-rated hazards are Drought (High, $1M EAL), Wildfire (Low, $218K EAL), Strong Wind (Medium, $581K EAL). These account for most of the county's expected annual losses.
How does Jefferson County compare to other Oklahoma counties?
Jefferson County ranks #72 of 77 Oklahoma 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. Jefferson County's $5M EAL is a statistical average, not a guarantee for any specific year or address.