Weber County, UT
FEMA National Risk Index scores, disaster declarations & hazard data
Weber County has experienced 11 federally declared disasters since 1977, most recently Straight-Line Winds in 2021. Its overall natural hazard risk is rated Relatively Moderate — near the middle compared to other US counties.
Weber County's highest-rated hazards are earthquake, lightning, and wildfire, with its top risk rated "Relatively Moderate" by FEMA's National Risk Index.
Past disasters & FEMA designations
A federal disaster declaration officially designates a county for FEMA disaster assistance. Weber County has been designated in 11 declarations since 1977, covering 6 disaster types including flood (4), fire (2), biological (2).
| Year | Type | Event name |
|---|---|---|
| 2021 | Severe Storm | Straight-Line Winds |
| 2020 | Biological | Covid-19 Pandemic |
| 2020 | Biological | Covid-19 |
| 2017 | Fire | Uintah Fire |
| 2011 | Flood | Flooding |
| 2005 | Coastal Storm | Hurricane Katrina Evacuation |
| 2003 | Fire | Ut-Causey Fire 07/14/2003 |
| 1986 | Flood | Heavy Rains, Snowmelt & Flooding |
| 1984 | Flood | Severe Storms, Mudslides, Landslides & Flooding |
| 1983 | Flood | Severe Storms, Landslides & Flooding |
Showing the 10 most recent of 11 total declarations since 1977.
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 Moderate | 94.1 | 0 | 0 | — |
| Inland Flooding | Relatively Low | 67.6 | 4 | 1 | $134K |
| Coastal Flooding | Not Applicable | — | 0 | 0 | — |
| Earthquake | Relatively Moderate | 97.7 | 7 | — | — |
| Heat Wave | Relatively Moderate | 81.4 | 0 | 0 | — |
| Tornado | Relatively Low | 32 | 2 | 0 | $2.0M |
| Hurricane | Not Applicable | — | 0 | 0 | — |
| Hail | Very Low | 14.5 | 4 | 0 | — |
| Strong Wind | Relatively Moderate | 79.3 | 0 | 0 | — |
| Winter Weather | Relatively High | 90.5 | 0 | 0 | — |
| Ice Storm | Relatively Low | 33.3 | — | — | — |
| Cold Wave | Relatively Low | 46.5 | — | — | — |
| Lightning | Relatively High | 94.6 | 0 | 0 | — |
| Drought | Relatively Low | 44.5 | 0 | 0 | — |
| Landslide | Very Low | 46.9 | 0 | 0 | — |
| Avalanche | Relatively High | 93.4 | — | — | — |
| Tsunami | Not Applicable | — | — | — | — |
| Volcanic Activity | Not Applicable | — | — | — | — |
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
Weber County ranks in the 35th 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 | 35th | Low |
| Socioeconomic status | 24th | Very low |
| Household characteristics | 49th | Low |
| Racial & ethnic minority status | 61st | Moderate |
| Housing type & transportation | 39th | 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 | 87th | Very High |
| Risk to homes | 91st | Very High |
| Buildings in direct exposure zone | 21.5% | — |
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 Weber County?
According to the FEMA National Risk Index, the highest-risk hazards in Weber County, Utah are earthquake, lightning, and wildfire. The county's overall natural hazard risk is rated Relatively Moderate — near the middle compared to other US counties.
Has Weber County received federal disaster declarations?
Yes. Weber County has received 11 federal disaster declarations since 1977, including declarations in 2021. The most common disaster type on record is flood (4 declarations).
Has Weber County had any FEMA disaster declarations in 2024, 2025, or 2026?
No federal disaster declarations have been recorded for Weber County since the start of 2024. Its most recent declaration on record is Straight-Line Winds in 2021.
How does Weber County's natural hazard risk compare to nearby counties?
Among neighboring counties, Salt Lake County, UT has the highest overall natural hazard risk (Relatively High) and Rich County, UT has the lowest (Very Low). Weber County is rated Relatively Moderate overall.
How is Weber County's composite disaster risk index calculated?
Weber 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. Weber County's composite score of 87 means its overall natural hazard risk is higher than 87% of US counties.