Utah Natural Disaster Risk by County
Of Utah's 29 counties, 0 have a Very High natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025); the highest is Salt Lake County (score 98.6 of 100), and expected losses across the state total $1.6 billion a year.
OpenFEMA lists 60 federal disaster, emergency and fire management declarations for Utah since 1977 (not counting COVID-19); the latest is DR-4948-UT, Cottonwood Fire, Flooding, and Mudslides, declared 7 October 2026.
Live weather alerts for Utah Latest FEMA declarations All official warnings
Most exposed counties, hazard by hazard
Top 10 by FEMA hazard risk scoreTornado 29 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Salt Lake County | Relatively Moderate | $3.8 million |
| 2 | Utah County | Relatively Low | $2.1 million |
| 3 | Davis County | Relatively Low | $1.2 million |
| 4 | Weber County | Relatively Low | $915,304 |
| 5 | Cache County | Very Low | $393,783 |
| 6 | Summit County | Very Low | $209,347 |
| 7 | Tooele County | Very Low | $197,337 |
| 8 | Box Elder County | Very Low | $169,774 |
| 9 | Sanpete County | Very Low | $101,252 |
| 10 | Carbon County | Very Low | $100,681 |
Inland flooding 29 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Washington County | Relatively High | $66 million |
| 2 | Salt Lake County | Relatively Moderate | $79 million |
| 3 | Utah County | Relatively Moderate | $64 million |
| 4 | Weber County | Relatively Low | $19 million |
| 5 | Davis County | Relatively Low | $16 million |
| 6 | Kane County | Relatively Low | $8.9 million |
| 7 | Summit County | Relatively Low | $12 million |
| 8 | Garfield County | Relatively Low | $5.6 million |
| 9 | Cache County | Relatively Low | $8.8 million |
| 10 | Iron County | Relatively Low | $7.8 million |
Wildfire 29 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Washington County | Relatively High | $68 million |
| 2 | Utah County | Relatively High | $35 million |
| 3 | Salt Lake County | Relatively High | $25 million |
| 4 | Iron County | Relatively High | $15 million |
| 5 | Tooele County | Relatively Moderate | $14 million |
| 6 | Summit County | Relatively Moderate | $11 million |
| 7 | Box Elder County | Relatively Moderate | $6.5 million |
| 8 | Wasatch County | Relatively Moderate | $4.4 million |
| 9 | Weber County | Relatively Moderate | $4.5 million |
| 10 | Millard County | Relatively Moderate | $1.5 million |
Earthquake 29 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Salt Lake County | Relatively High | $488 million |
| 2 | Utah County | Relatively High | $163 million |
| 3 | Davis County | Relatively Moderate | $89 million |
| 4 | Weber County | Relatively Moderate | $66 million |
| 5 | Cache County | Relatively Moderate | $19 million |
| 6 | Box Elder County | Relatively Moderate | $16 million |
| 7 | Sevier County | Relatively Low | $4.2 million |
| 8 | Iron County | Relatively Low | $4.5 million |
| 9 | Tooele County | Relatively Low | $4.0 million |
| 10 | Sanpete County | Relatively Low | $2.3 million |
Every Utah county, highest overall risk first
29| # | County | Overall risk | Score | Loss a year | Top hazard | Declarations | Tornadoes |
|---|---|---|---|---|---|---|---|
| 1 | Salt Lake County | Relatively High | 98.6 | $622 million | Earthquake | 10 | 13 |
| 2 | Utah County | Relatively High | 95.3 | $288 million | Lightning | 11 | 10 |
| 3 | Washington County | Relatively Moderate | 92.8 | $148 million | Wildfire | 12 | 4 |
| 4 | Davis County | Relatively Moderate | 87.8 | $128 million | Earthquake | 9 | 12 |
| 5 | Weber County | Relatively Moderate | 87.0 | $104 million | Earthquake | 9 | 8 |
| 6 | Cache County | Relatively Low | 66.5 | $39 million | Earthquake | 5 | 4 |
| 7 | Iron County | Relatively Low | 61.4 | $31 million | Wildfire | 5 | 5 |
| 8 | Summit County | Relatively Low | 60.1 | $39 million | Avalanche | 8 | 0 |
| 9 | Box Elder County | Relatively Low | 55.9 | $31 million | Wildfire | 7 | 10 |
| 10 | Tooele County | Relatively Low | 48.9 | $26 million | Wildfire | 9 | 5 |
| 11 | Kane County | Very Low | 39.7 | $14 million | Landslide | 6 | 0 |
| 12 | Sanpete County | Very Low | 38.6 | $12 million | Avalanche | 8 | 9 |
| 13 | Garfield County | Very Low | 37.6 | $10 million | Landslide | 5 | 4 |
| 14 | Wasatch County | Very Low | 33.5 | $17 million | Landslide | 9 | 1 |
| 15 | San Juan County | Very Low | 26.8 | $5.0 million | Landslide | 4 | 7 |
| 16 | Sevier County | Very Low | 22.7 | $10 million | Earthquake | 7 | 2 |
| 17 | Millard County | Very Low | 22.2 | $7.1 million | Winter weather | 9 | 2 |
| 18 | Juab County | Very Low | 15.3 | $9.0 million | Wildfire | 7 | 1 |
| 19 | Beaver County | Very Low | 10.4 | $4.8 million | Landslide | 7 | 7 |
| 20 | Grand County | Very Low | 10.3 | $5.2 million | Lightning | 2 | 5 |
| 21 | Carbon County | Very Low | 8.7 | $4.5 million | Landslide | 3 | 2 |
| 22 | Duchesne County | Very Low | 7.6 | $5.5 million | Landslide | 6 | 5 |
| 23 | Emery County | Very Low | 7.0 | $3.6 million | Lightning | 4 | 7 |
| 24 | Uintah County | Very Low | 4.0 | $3.8 million | Landslide | 6 | 8 |
| 25 | Daggett County | Very Low | 3.7 | $2.5 million | Avalanche | 5 | 2 |
| 26 | Morgan County | Very Low | 3.5 | $5.0 million | Landslide | 8 | 1 |
| 27 | Wayne County | Very Low | 1.9 | $1.8 million | Landslide | 2 | 8 |
| 28 | Piute County | Very Low | 0.9 | $1.3 million | Landslide | 7 | 1 |
| 29 | Rich County | Very Low | 0.8 | $1.6 million | Landslide | 3 | 2 |
Score: FEMA's national percentile (higher = more risk). Declarations: federal declarations that named the county since 1953, not counting COVID-19. Tornadoes: NOAA SPC tornadoes that touched the county, 1950–2025.
Latest federal declarations in Utah
Other states and territories
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What this page shows, and what it misses
FEMA's National Risk Index compares every US county with every other for 18 natural hazards, combining expected losses with social vulnerability and community resilience. It is a planning-level estimate for nationwide comparison, not a flood-zone map and not the risk to any one property — for flood zones use FEMA's Flood Map Service Center ↗. Federal declarations exclude state declarations and SBA or USDA designations.
Federal Emergency Management Agency (FEMA), National Risk Index Dataset: National Risk Index Counties - v1.20.0 (December 2025). Retrieved from https://services.arcgis.com/XG15cJAlne2vxtgt/ArcGIS/rest/services/National_Risk_Index_Counties/FeatureServer/0/query on November 2, 2026, 1:20 PM EST. This product uses the Federal Emergency Management Agency’s National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Federal Emergency Management Agency (FEMA), OpenFEMA Dataset: Disaster Declarations Summaries - v2, retrieved from https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries on November 2, 2026, 1:21 PM EST. This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Tornado records: NOAA/NWS Storm Prediction Center, Severe Weather Database, tornadoes 1950–2025 (https://www.spc.noaa.gov/wcm/data/1950-2025_actual_tornadoes.csv, downloaded 2 November 2026). Public domain; not endorsed by NOAA. Compiled by Global Incident Tracker.
Questions about Utah
Which county in Utah has the highest natural disaster risk?
Of Utah's 29 counties, 0 have a Very High natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025); the highest is Salt Lake County (score 98.6 of 100), and expected losses across the state total $1.6 billion a year.
Which Utah counties are most at risk from tornadoes?
By FEMA's National Risk Index tornado risk score: Salt Lake County, Utah County, Davis County. These are planning-level estimates for whole counties, not maps of individual properties.
Which Utah counties are most at risk from inland flooding?
By FEMA's National Risk Index inland flooding risk score: Washington County, Salt Lake County, Utah County. These are planning-level estimates for whole counties, not maps of individual properties.
How many FEMA disaster declarations has Utah had?
OpenFEMA lists 60 federal disaster, emergency and fire management declarations for Utah since 1977 (not counting COVID-19); the latest is DR-4948-UT, Cottonwood Fire, Flooding, and Mudslides, declared 7 October 2026.