Avalanche Risk in Utah
All Utah counties ranked by FEMA National Risk Index avalanche score
Avalanche risk — fast-moving snow and debris sliding down steep mountain slopes — is rated for 29 of 29 Utah counties in FEMA's National Risk Index. Salt Lake County carries the state's highest avalanche score at 99.1, with $12M in expected annual avalanche losses.
12 Utah counties are rated High or Very High for avalanche, and expected annual losses from avalanche total roughly $53M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Avalanche
| # | County | Avalanche Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Salt Lake County | Very High | 1.53 / yr | $12M | |
| 2 | Summit County | Very High | 1.53 / yr | $10M | |
| 3 | Sanpete County | Very High | 0.90 / yr | $4M | |
| 4 | Weber County | High | 0.47 / yr | $4M | |
| 5 | Cache County | High | 0.37 / yr | $4M | |
| 6 | Utah County | High | 0.87 / yr | $3M | |
| 7 | Wasatch County | High | 1.17 / yr | $3M | |
| 8 | Davis County | High | 0.33 / yr | $3M | |
| 9 | San Juan County | High | 0.07 / yr | $913K | |
| 10 | Daggett County | High | 0.07 / yr | $1M | |
| 11 | Juab County | High | 0.97 / yr | $2M | |
| 12 | Washington County | High | 0.33 / yr | $1M | |
| 13 | Garfield County | Medium | 0.07 / yr | $913K | |
| 14 | Beaver County | Medium | 0.07 / yr | $1M | |
| 15 | Box Elder County | Medium | 0.37 / yr | $1M | |
| 16 | Sevier County | Medium | 0.17 / yr | $691K | |
| 17 | Grand County | Medium | 0.03 / yr | $457K | |
| 18 | Emery County | Low | 0.17 / yr | $16K | |
| 19 | Duchesne County | Low | 0.30 / yr | $18K | |
| 20 | Millard County | Low | 0.17 / yr | $8K | |
| 21 | Rich County | Low | 0.03 / yr | $11K | |
| 22 | Morgan County | Low | 0.03 / yr | $11K | |
| 23 | Carbon County | Very Low | 0.03 / yr | $2K | |
| 24 | Kane County | Very Low | 0.03 / yr | $2K | |
| 25 | Wayne County | Very Low | 0.03 / yr | $1K | |
| 26 | Tooele County | Very Low | 0.03 / yr | $2K | |
| 27 | Piute County | Very Low | 0.03 / yr | $484 | |
| 28 | Iron County | Very Low | 0.03 / yr | $526 | |
| 29 | Uintah County | Very Low | 0.01 / yr | $456 |
29 Utah counties with measurable avalanche risk. See the national avalanche ranking or all Utah counties by overall risk.
Frequently Asked Questions
Which Utah county has the highest avalanche risk?
Salt Lake County has the highest FEMA avalanche risk score in Utah at 99.1 (Very High), with $12M in expected annual losses and about 1.53 events per year.
How many Utah counties face significant avalanche risk?
29 Utah counties record measurable avalanche risk in FEMA's National Risk Index; 12 of them are rated High or Very High.