Jefferson County, Tennessee: hazard risk
FEMA rates Jefferson County's overall risk Relatively Low (score 44.9 of 100, higher than 44% of rated U.S. counties). Its storm record holds 376 events since 1950.
FEMA's rating for each hazard
These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.
FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).
| Hazard | Risk rating | Score | Expected annual loss |
|---|---|---|---|
| Landslide | Relatively Moderate | 88.6 | $43K |
| Lightning | Relatively Moderate | 71.9 | $463K |
| Earthquake | Relatively Low | 82.6 | $1.9M |
| Tornado | Relatively Low | 59.6 | $1.5M |
| Riverine Flooding | Relatively Low | 56.8 | $7.1M |
| Ice Storm | Relatively Low | 50.6 | $76K |
| Strong Wind | Relatively Low | 42.9 | $389K |
| Cold Wave | Relatively Low | 42.0 | $612K |
| Winter Weather | Relatively Low | 39.3 | $39K |
| Drought | Relatively Low | 33.0 | $30K |
| Wildfire | Very Low | 42.9 | $27K |
| Hurricane | Very Low | 42.9 | $33K |
| Hail | Very Low | 25.8 | $83K |
| Heat Wave | Very Low | 22.1 | $64K |
Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.
What the record holds
| Hazard | Records | Deaths | Damage | Rank in state | Rank in U.S. |
|---|---|---|---|---|---|
| Severe thunderstorm wind | 230 | 0 | $2.9M | 9th of 95 | 71st of 3,080 |
| Hail | 51 | 0 | $2K | 27th of 95 | 1020th of 3,080 |
| Winter storms | 50 | 0 | $27K | 33rd of 95 | 997th of 3,077 |
| Floods | 18 | 0 | $3.0M | 81st of 95 | 1411th of 3,080 |
| Tornadoes | 10 | 0 | $352K | 70th of 95 | 1946th of 3,080 |
| High wind and dust storms | 7 | 0 | $119K | 30th of 95 | 1567th of 3,080 |
| Lightning | 5 | 0 | $215K | 17th of 95 | 411th of 3,080 |
| Hurricanes and tropical storms | 3 | 0 | $45K | 3rd of 95 | 587th of 1,849 |
| Drought | 1 | 0 | – | 69th of 95 | 2280th of 3,063 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Jefferson County record: every hazard by year and month, the deadliest events and FEMA's declarations.