Compare 8 cities using FEMA's relative tornado scores and annualized frequency for the county-equivalent areas shown.
Highest relative score
99.6/100
Jackson County
Covered cities: Independence, Kansas City, and Lee's Summit
Lowest relative score in this set
93.8/100
Boone County
Covered cities: Columbia
These are relative FEMA scores for county-equivalent areas. They are not annual probabilities or property-level findings.
Cities sharing a FEMA area are grouped together and receive the same score.
| Rank | FEMA area and cities | Rating | Score | Annualized frequency |
|---|---|---|---|---|
| #1 | Jackson County | Very High | 99.6/100 | 0.41 events per year |
| #2 | City of St. Louis | Relatively High | 98.6/100 | 0.05 events per year |
| #3 | St. Charles County | Relatively High | 97.3/100 | 0.43 events per year |
| #4 | Jasper County | Relatively High | 96.0/100 | 0.58 events per year |
| #5 | Greene County | Relatively High | 95.6/100 | 0.54 events per year |
| #6 | Boone County | Relatively High | 93.8/100 | 0.33 events per year |
FEMA annualizes recorded qualifying tornado occurrences across the FEMA geography and source period.
Independence, Kansas City, and Lee's Summit use FEMA data for Jackson County, which has the highest relative tornado score in this covered set at 99.6/100. Cities sharing the same FEMA area share the same score.
Boone County has the lowest score in this covered set at 93.8/100. This is a relative FEMA comparison, not a declaration that every property there is safe.
No. The city links provide geographic navigation, while the scores and frequencies cover the FEMA county-equivalent areas shown in the table. Address-level conditions require local maps and property details.
No. The relative score compares FEMA areas on a 0–100 scale. Annualized frequency appears separately with hazard-specific units.
Source: FEMA National Risk Index v1.19.0, released March 2023. Hazard data covers FEMA county-equivalent areas.