Sevier County, UT
FEMA National Risk Index scores, disaster declarations & hazard data
Sevier County has experienced 9 federally declared disasters since 1977, most recently Monroe Canyon Fire in 2025. Its overall natural hazard risk is rated Very Low — among the lowest-risk counties in the country.
Sevier County's highest-rated hazards are earthquake, avalanche, and landslide, with its top risk rated "Relatively Low" by FEMA's National Risk Index. Community vulnerability is relatively low (29th percentile nationally), indicating stronger recovery capacity than most US counties.
Past disasters & FEMA designations
A federal disaster declaration officially designates a county for FEMA disaster assistance. Sevier County has been designated in 9 declarations since 1977, covering 5 disaster types including flood (4), biological (2), fire (1).
| Year | Type | Event name |
|---|---|---|
| 2025 | Fire | Monroe Canyon Fire |
| 2020 | Biological | Covid-19 Pandemic |
| 2020 | Biological | Covid-19 |
| 2011 | Flood | Flooding |
| 2005 | Coastal Storm | Hurricane Katrina Evacuation |
| 2005 | Flood | Flooding And Landslides |
| 1984 | Flood | Severe Storms, Mudslides, Landslides & Flooding |
| 1983 | Flood | Severe Storms, Landslides & Flooding |
| 1977 | Drought | Drought |
Source: FEMA OpenFEMA Disaster Declarations Summaries. A single disaster can produce more than one record per county. Data current through September 2026.
Risk by hazard type
| Hazard | Risk rating | Risk score | Recorded events | Deaths | Prop. damage |
|---|---|---|---|---|---|
| Wildfire | Relatively Low | 78.6 | 0 | 0 | — |
| Inland Flooding | Very Low | 22.1 | 3 | 0 | $1.0M |
| Coastal Flooding | Not Applicable | — | 0 | 0 | — |
| Earthquake | Relatively Low | 87 | 31 | — | — |
| Heat Wave | Very Low | 27.8 | 0 | 0 | — |
| Tornado | Very Low | 5.2 | 0 | 0 | — |
| Hurricane | Not Applicable | — | 0 | 0 | — |
| Hail | Very Low | 1.4 | 0 | 0 | — |
| Strong Wind | Very Low | 7.3 | 0 | 0 | — |
| Winter Weather | Relatively Moderate | 69.9 | 0 | 0 | — |
| Ice Storm | Very Low | 9 | — | — | — |
| Cold Wave | Very Low | 2.3 | — | — | — |
| Lightning | Relatively Moderate | 71.1 | 0 | 0 | — |
| Drought | Relatively Low | 53.1 | 0 | 0 | — |
| Landslide | Relatively Low | 79.8 | 0 | 0 | — |
| Avalanche | Relatively Moderate | 82 | — | — | — |
| Tsunami | Not Applicable | — | — | — | — |
| Volcanic Activity | Very Low | 43 | — | — | — |
Scores are 0–100 percentiles relative to all US counties — higher means more exposed, not that a disaster is likely this year. Event counts: NOAA Storm Events 2016–2026; earthquake counts from USGS ComCat (M3.0+, 1996–2026). See the methodology page for details.
Community vulnerability
Sevier County ranks in the 29th percentile (Low) for community vulnerability — a measure of how hard disaster impacts tend to hit residents. Higher vulnerability means more displacement, worse health outcomes, and slower recovery after a disaster.
| SVI theme | Percentile | Vulnerability level |
|---|---|---|
| Overall | 29th | Low |
| Socioeconomic status | 37th | Low |
| Household characteristics | 19th | Very low |
| Racial & ethnic minority status | 25th | Low |
| Housing type & transportation | 42nd | Low |
Source: CDC/ATSDR Social Vulnerability Index 2022. Percentiles compare counties nationally — higher means more vulnerable relative to other counties. See CDC SVI for full methodology.
Future risk outlook
| Wildfire metric | National percentile | Level |
|---|---|---|
| Burn probability | 78th | Relatively High |
| Risk to homes | 84th | Very High |
| Buildings in direct exposure zone | 32.2% | — |
Wildfire: USDA Forest Service Wildfire Risk to Communities (RDS-2020-0016-2) — modeled values, not annual forecasts. See wildfirerisk.org. Inland flood and heat projections pending data availability; coastal sea-level projections are available for select coastal counties below — see the data page.
Nearby counties
Frequently asked questions
What natural hazards pose the greatest risk in Sevier County?
According to the FEMA National Risk Index, the highest-risk hazards in Sevier County, Utah are earthquake, avalanche, and landslide. The county's overall natural hazard risk is rated Very Low — among the lowest-risk counties in the country.
Has Sevier County received federal disaster declarations?
Yes. Sevier County has received 9 federal disaster declarations since 1977, including declarations in 2025. The most common disaster type on record is flood (4 declarations).
Has Sevier County had any FEMA disaster declarations in 2024, 2025, or 2026?
Yes. Recent federal disaster declarations for Sevier County include Monroe Canyon Fire (2025). See the declarations table above for the full history since 1977.
How does Sevier County's natural hazard risk compare to nearby counties?
Among neighboring counties, Sanpete County, UT has the highest overall natural hazard risk (Very Low) and Piute County, UT has the lowest (Very Low). Sevier County is rated Very Low overall.
How is Sevier County's composite disaster risk index calculated?
Sevier County's composite disaster risk index — officially FEMA's National Risk Index (NRI) — scores every US county on a 0–100 percentile scale across 18 natural hazard types, factoring in expected annual loss, social vulnerability, and community resilience. Sevier County's composite score of 23 means its overall natural hazard risk is higher than 23% of US counties.