Utah ice storm risk
Washington County has the highest ice storm risk in Utah, scoring 52.2 out of 100 — rated "Relatively Low" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
|---|---|---|---|
| 1 | Washington County | 52.2 | Relatively Low |
| 2 | Utah County | 50.8 | Relatively Low |
| 3 | Davis County | 34.4 | Relatively Low |
| 4 | Weber County | 33.3 | Relatively Low |
| 5 | Iron County | 26.3 | Very Low |
| 6 | San Juan County | 22.9 | Very Low |
| 7 | Cache County | 21.1 | Very Low |
| 8 | Tooele County | 14.7 | Very Low |
| 9 | Box Elder County | 13.9 | Very Low |
| 10 | Salt Lake County | 13.8 | Very Low |
| 11 | Summit County | 13.7 | Very Low |
| 12 | Sanpete County | 12 | Very Low |
| 13 | Millard County | 10.4 | Very Low |
| 14 | Wasatch County | 10.2 | Very Low |
| 15 | Uintah County | 10.1 | Very Low |
| 16 | Kane County | 9.7 | Very Low |
| 17 | Sevier County | 9 | Very Low |
| 18 | Beaver County | 8.8 | Very Low |
| 19 | Garfield County | 8.4 | Very Low |
| 20 | Duchesne County | 8.2 | Very Low |
| 21 | Carbon County | 8.1 | Very Low |
| 22 | Emery County | 6.2 | Very Low |
| 23 | Grand County | 5.6 | Very Low |
| 24 | Wayne County | 4.7 | Very Low |
| 25 | Juab County | 4.4 | Very Low |
| 26 | Morgan County | 3 | Very Low |
| 27 | Rich County | 2.7 | Very Low |
| 28 | Piute County | 2.1 | Very Low |
| 29 | Daggett County | 1.3 | Very Low |
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.
Ice Storm risk nationally:
Other hazard risks in Utah:
Frequently asked questions
What is the highest ice storm risk county in Utah?
Washington County, UT has the highest ice storm risk in Utah, with a FEMA National Risk Index score of 52.2 out of 100 (rated "Relatively Low").
What causes ice storm risk in Utah?
Ice storm risk covers damaging freezing rain and sleet accumulation, which collapses power lines, trees, and structures. The highest-risk counties cluster in a band from eastern Texas and Arkansas through the Carolinas and New England, where warm Gulf moisture overruns cold arctic air most frequently. Ice storms cause catastrophic and long-lasting power outages. Ice storm and sleet events are reported at forecast-zone level in NOAA Storm Events and are not included in county-level counts.