Wyoming tornado risk
Laramie County has the highest tornado risk in Wyoming, scoring 88.4 out of 100 — rated "Relatively Moderate" by FEMA's National Risk Index. Recorded tornado events across Wyoming have decreased 38% over the past five years compared to the prior five-year period.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Laramie County | 88.4 | Relatively Moderate | 18 |
| 2 | Goshen County | 47 | Relatively Low | 13 |
| 3 | Campbell County | 46.3 | Relatively Low | 7 |
| 4 | Natrona County | 36.9 | Relatively Low | 5 |
| 5 | Albany County | 36.7 | Relatively Low | 9 |
| 6 | Platte County | 33.6 | Relatively Low | 8 |
| 7 | Park County | 25.9 | Very Low | 1 |
| 8 | Converse County | 24.2 | Very Low | 6 |
| 9 | Weston County | 22.3 | Very Low | 3 |
| 10 | Crook County | 22.2 | Very Low | 7 |
| 11 | Sheridan County | 22.2 | Very Low | 0 |
| 12 | Fremont County | 19.6 | Very Low | 2 |
| 13 | Teton County | 19.4 | Very Low | 2 |
| 14 | Big Horn County | 16.7 | Very Low | 1 |
| 15 | Johnson County | 15.6 | Very Low | 4 |
| 16 | Washakie County | 15 | Very Low | 1 |
| 17 | Niobrara County | 13.5 | Very Low | 5 |
| 18 | Lincoln County | 12.9 | Very Low | 0 |
| 19 | Hot Springs County | 11.4 | Very Low | 1 |
| 20 | Uinta County | 10.4 | Very Low | 0 |
| 21 | Sweetwater County | 9.4 | Very Low | 4 |
| 22 | Carbon County | 8.6 | Very Low | 2 |
| 23 | Sublette County | 5.8 | Very Low | 3 |
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 Wyoming:
Frequently asked questions
What is the highest tornado risk county in Wyoming?
Laramie County, WY has the highest tornado risk in Wyoming, with a FEMA National Risk Index score of 88.4 out of 100 (rated "Relatively Moderate").
What causes tornado risk in Wyoming?
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.