Vermont tornado risk
Windham County has the highest tornado risk in Vermont, scoring 40 out of 100 — rated "Relatively Low" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Windham County | 40 | Relatively Low | 1 |
| 2 | Windsor County | 30.1 | Relatively Low | 0 |
| 3 | Chittenden County | 29.5 | Relatively Low | 0 |
| 4 | Rutland County | 25.8 | Very Low | 1 |
| 5 | Bennington County | 20.9 | Very Low | 0 |
| 6 | Addison County | 20.3 | Very Low | 3 |
| 7 | Franklin County | 14.8 | Very Low | 0 |
| 8 | Washington County | 13.9 | Very Low | 0 |
| 9 | Orange County | 13.3 | Very Low | 0 |
| 10 | Orleans County | 11.1 | Very Low | 0 |
| 11 | Caledonia County | 10.3 | Very Low | 0 |
| 12 | Lamoille County | 10 | Very Low | 0 |
| 13 | Essex County | 4.9 | Very Low | 0 |
| 14 | Grand Isle County | 4.8 | Very Low | 0 |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Tornado risk nationally:
Other hazard risks in Vermont:
Frequently asked questions
What is the highest tornado risk county in Vermont?
Windham County, VT has the highest tornado risk in Vermont, with a FEMA National Risk Index score of 40 out of 100 (rated "Relatively Low").
What causes tornado risk in Vermont?
Tornado risk concentrates in the central and southern plains ("Tornado Alley") and the Southeast ("Dixie Alley"), where atmospheric conditions favor supercell thunderstorm development. The highest scores often belong to counties with significant mobile home and manufactured housing stock, which carries disproportionate tornado mortality risk.