Tornado Risk in Utah
All Utah counties ranked by FEMA National Risk Index tornado score
Tornado risk — violently rotating columns of air capable of catastrophic local damage — is rated for 29 of 29 Utah counties in FEMA's National Risk Index. Salt Lake County carries the state's highest tornado score at 71.0, with $4M in expected annual tornado losses.
No Utah county reaches the High band for tornado, and expected annual losses from tornado total roughly $10M 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 | Salt Lake County | Medium | 0.05 / yr | $4M | |
| 2 | Utah County | Low | 0.11 / yr | $2M | |
| 3 | Davis County | Low | 0.04 / yr | $1M | |
| 4 | Weber County | Low | 0.05 / yr | $915K | |
| 5 | Cache County | Very Low | 0.08 / yr | $394K | |
| 6 | Summit County | Very Low | 0.11 / yr | $209K | |
| 7 | Tooele County | Very Low | 0.19 / yr | $197K | |
| 8 | Box Elder County | Very Low | 0.31 / yr | $170K | |
| 9 | Sanpete County | Very Low | 0.04 / yr | $101K | |
| 10 | Carbon County | Very Low | 0.05 / yr | $101K | |
| 11 | Wasatch County | Very Low | 0.06 / yr | $139K | |
| 12 | Uintah County | Very Low | 0.16 / yr | $81K | |
| 13 | Millard County | Very Low | 0.09 / yr | $41K | |
| 14 | Juab County | Very Low | 0.07 / yr | $53K | |
| 15 | Duchesne County | Very Low | 0.11 / yr | $47K | |
| 16 | Washington County | Very Low | 0.04 / yr | $31K | |
| 17 | Morgan County | Very Low | 0.04 / yr | $46K | |
| 18 | San Juan County | Very Low | 0.12 / yr | $13K | |
| 19 | Sevier County | Very Low | 0.04 / yr | $28K | |
| 20 | Emery County | Very Low | 0.12 / yr | $19K | |
| 21 | Grand County | Very Low | 0.12 / yr | $20K | |
| 22 | Iron County | Very Low | 0.07 / yr | $18K | |
| 23 | Rich County | Very Low | 0.07 / yr | $9K | |
| 24 | Garfield County | Very Low | 0.06 / yr | $4K | |
| 25 | Daggett County | Very Low | 0.03 / yr | $4K | |
| 26 | Wayne County | Very Low | 0.04 / yr | $4K | |
| 27 | Beaver County | Very Low | 0.05 / yr | $2K | |
| 28 | Kane County | Very Low | 0.05 / yr | $2K | |
| 29 | Piute County | Very Low | 0.02 / yr | $1K |
29 Utah counties with measurable tornado risk. See the national tornado ranking or all Utah counties by overall risk.
Frequently Asked Questions
Which Utah county has the highest tornado risk?
Salt Lake County has the highest FEMA tornado risk score in Utah at 71.0 (Medium), with $4M in expected annual losses and about 0.05 events per year.
How many Utah counties face significant tornado risk?
29 Utah counties record measurable tornado risk in FEMA's National Risk Index; 0 of them are rated High or Very High.