Cold Wave Risk in Wyoming
All Wyoming counties ranked by FEMA National Risk Index cold wave score
Cold Wave risk — prolonged spells of dangerously low temperatures — is rated for 23 of 23 Wyoming counties in FEMA's National Risk Index. Laramie County carries the state's highest cold wave score at 93.4, with $11M in expected annual cold wave losses.
1 Wyoming county is rated High or Very High for cold wave, and expected annual losses from cold wave total roughly $56M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Cold Wave
| # | County | Cold Wave Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Laramie County | High | 3.40 / yr | $11M | |
| 2 | Campbell County | Medium | 4.77 / yr | $8M | |
| 3 | Albany County | Medium | 4.16 / yr | $6M | |
| 4 | Park County | Medium | 0.89 / yr | $5M | |
| 5 | Natrona County | Medium | 1.72 / yr | $5M | |
| 6 | Sheridan County | Medium | 2.08 / yr | $3M | |
| 7 | Converse County | Medium | 4.35 / yr | $2M | |
| 8 | Carbon County | Medium | 3.61 / yr | $2M | |
| 9 | Goshen County | Medium | 3.79 / yr | $2M | |
| 10 | Fremont County | Medium | 1.03 / yr | $2M | |
| 11 | Platte County | Medium | 3.56 / yr | $1M | |
| 12 | Crook County | Low | 4.79 / yr | $1M | |
| 13 | Sweetwater County | Low | 1.19 / yr | $2M | |
| 14 | Big Horn County | Low | 1.31 / yr | $1M | |
| 15 | Weston County | Low | 4.70 / yr | $1M | |
| 16 | Niobrara County | Low | 4.47 / yr | $522K | |
| 17 | Johnson County | Low | 1.63 / yr | $616K | |
| 18 | Washakie County | Low | 0.91 / yr | $359K | |
| 19 | Hot Springs County | Low | 0.75 / yr | $291K | |
| 20 | Teton County | Very Low | 0.26 / yr | $367K | |
| 21 | Uinta County | Very Low | 0.42 / yr | $293K | |
| 22 | Sublette County | Very Low | 0.57 / yr | $231K | |
| 23 | Lincoln County | Very Low | 0.29 / yr | $167K |
23 Wyoming counties with measurable cold wave risk. See the national cold wave ranking or all Wyoming counties by overall risk.
Frequently Asked Questions
Which Wyoming county has the highest cold wave risk?
Laramie County has the highest FEMA cold wave risk score in Wyoming at 93.4 (High), with $11M in expected annual losses and about 3.40 events per year.
How many Wyoming counties face significant cold wave risk?
23 Wyoming counties record measurable cold wave risk in FEMA's National Risk Index; 1 of them are rated High or Very High.