Tornado Risk in Wyoming
All Wyoming counties ranked by FEMA National Risk Index tornado score
Tornado risk — violently rotating columns of air capable of catastrophic local damage — is rated for 23 of 23 Wyoming counties in FEMA's National Risk Index. Laramie County carries the state's highest tornado score at 88.4, with $7M in expected annual tornado losses.
No Wyoming county reaches the High band for tornado, and expected annual losses from tornado total roughly $15M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Tornado
| # | County | Tornado Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Laramie County | Medium | 1.61 / yr | $7M | |
| 2 | Goshen County | Low | 1.05 / yr | $1M | |
| 3 | Campbell County | Low | 0.82 / yr | $1M | |
| 4 | Natrona County | Low | 0.45 / yr | $875K | |
| 5 | Albany County | Low | 0.88 / yr | $863K | |
| 6 | Platte County | Low | 0.66 / yr | $427K | |
| 7 | Park County | Very Low | 0.24 / yr | $386K | |
| 8 | Converse County | Very Low | 0.69 / yr | $326K | |
| 9 | Weston County | Very Low | 0.57 / yr | $328K | |
| 10 | Sheridan County | Very Low | 0.21 / yr | $303K | |
| 11 | Crook County | Very Low | 0.58 / yr | $292K | |
| 12 | Fremont County | Very Low | 0.34 / yr | $198K | |
| 13 | Teton County | Very Low | 0.09 / yr | $308K | |
| 14 | Big Horn County | Very Low | 0.24 / yr | $155K | |
| 15 | Johnson County | Very Low | 0.49 / yr | $145K | |
| 16 | Washakie County | Very Low | 0.17 / yr | $106K | |
| 17 | Niobrara County | Very Low | 0.61 / yr | $81K | |
| 18 | Lincoln County | Very Low | 0.16 / yr | $113K | |
| 19 | Hot Springs County | Very Low | 0.12 / yr | $63K | |
| 20 | Uinta County | Very Low | 0.08 / yr | $87K | |
| 21 | Sweetwater County | Very Low | 0.36 / yr | $66K | |
| 22 | Carbon County | Very Low | 0.37 / yr | $47K | |
| 23 | Sublette County | Very Low | 0.14 / yr | $26K |
23 Wyoming counties with measurable tornado risk. See the national tornado ranking or all Wyoming counties by overall risk.
Frequently Asked Questions
Which Wyoming county has the highest tornado risk?
Laramie County has the highest FEMA tornado risk score in Wyoming at 88.4 (Medium), with $7M in expected annual losses and about 1.61 events per year.
How many Wyoming counties face significant tornado risk?
23 Wyoming counties record measurable tornado risk in FEMA's National Risk Index; 0 of them are rated High or Very High.