Wyoming lightning risk
Teton County has the highest lightning risk in Wyoming, scoring 97.2 out of 100 — rated "Very High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Teton County | 97.2 | Very High | 2 |
| 2 | Carbon County | 89.8 | Relatively High | 0 |
| 3 | Laramie County | 89.1 | Relatively High | 0 |
| 4 | Park County | 85 | Relatively High | 2 |
| 5 | Fremont County | 83.9 | Relatively High | 0 |
| 6 | Albany County | 83 | Relatively High | 1 |
| 7 | Sublette County | 79.1 | Relatively Moderate | 0 |
| 8 | Lincoln County | 71.8 | Relatively Moderate | 0 |
| 9 | Sheridan County | 68.9 | Relatively Moderate | 0 |
| 10 | Natrona County | 67.3 | Relatively Moderate | 0 |
| 11 | Uinta County | 66.9 | Relatively Moderate | 0 |
| 12 | Campbell County | 62.5 | Relatively Moderate | 0 |
| 13 | Sweetwater County | 55.9 | Relatively Low | 0 |
| 14 | Platte County | 45.8 | Relatively Low | 0 |
| 15 | Goshen County | 40.4 | Relatively Low | 0 |
| 16 | Hot Springs County | 38.1 | Relatively Low | 0 |
| 17 | Converse County | 37.1 | Relatively Low | 0 |
| 18 | Big Horn County | 37 | Relatively Low | 0 |
| 19 | Crook County | 31.2 | Relatively Low | 0 |
| 20 | Johnson County | 25.2 | Relatively Low | 0 |
| 21 | Washakie County | 22.5 | Very Low | 0 |
| 22 | Weston County | 21.6 | Very Low | 0 |
| 23 | Niobrara County | 11.6 | 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.
Lightning risk nationally:
Other hazard risks in Wyoming:
Frequently asked questions
What is the highest lightning risk county in Wyoming?
Teton County, WY has the highest lightning risk in Wyoming, with a FEMA National Risk Index score of 97.2 out of 100 (rated "Very High").
How many counties in Wyoming are rated Very High for lightning risk?
1 of 23 scored Wyoming counties are rated "Very High" for lightning risk by FEMA's National Risk Index.
What causes lightning risk in Wyoming?
Lightning risk reflects expected annual losses from cloud-to-ground strikes, which ignite building fires, damage electrical systems, and cause fatalities. Florida consistently leads the US in lightning density. High scores also appear across the Gulf Coast, Southeast, and central Plains, where afternoon convective storms are most frequent in summer months.