Nevada Natural Disaster Risk by County
Of Nevada's 17 counties, 1 has a Very High natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025); the highest is Clark County (score 99.6 of 100), and expected losses across the state total $1.4 billion a year.
OpenFEMA lists 114 federal disaster, emergency and fire management declarations for Nevada since 1954 (not counting COVID-19); the latest is FM-5678-NV, Bull Fire, declared 2 October 2026.
Live weather alerts for Nevada Latest FEMA declarations All official warnings
Most exposed counties, hazard by hazard
Top 10 by FEMA hazard risk scoreTornado 17 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Washoe County | Very Low | $146,015 |
| 2 | Clark County | Very Low | $51,292 |
| 3 | Douglas County | Very Low | $4,068 |
| 4 | Lyon County | Very Low | $4,073 |
| 5 | Humboldt County | Very Low | $4,378 |
| 6 | Storey County | Very Low | $4,426 |
| 7 | Carson City | Very Low | $3,643 |
| 8 | Lander County | Very Low | $1,461 |
| 9 | Churchill County | Very Low | $1,963 |
| 10 | Elko County | Very Low | $1,855 |
Inland flooding 17 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Clark County | Very High | $362 million |
| 2 | Washoe County | Relatively High | $80 million |
| 3 | Nye County | Relatively Moderate | $13 million |
| 4 | Douglas County | Relatively Moderate | $13 million |
| 5 | Lyon County | Relatively Low | $11 million |
| 6 | Elko County | Relatively Low | $8.0 million |
| 7 | Churchill County | Relatively Low | $7.5 million |
| 8 | Carson City | Relatively Low | $6.8 million |
| 9 | Lincoln County | Relatively Low | $2.6 million |
| 10 | White Pine County | Very Low | $2.9 million |
Wildfire 17 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Elko County | Relatively High | $62 million |
| 2 | Clark County | Relatively High | $24 million |
| 3 | Washoe County | Relatively High | $27 million |
| 4 | Douglas County | Relatively High | $10 million |
| 5 | Humboldt County | Relatively Moderate | $9.7 million |
| 6 | Lyon County | Relatively Moderate | $7.4 million |
| 7 | Storey County | Relatively Moderate | $7.1 million |
| 8 | Lander County | Relatively Moderate | $1.8 million |
| 9 | Carson City | Relatively Moderate | $2.9 million |
| 10 | Lincoln County | Relatively Moderate | $968,873 |
Earthquake 17 rated
| # | County | Rating | Loss a year |
|---|---|---|---|
| 1 | Washoe County | Relatively High | $160 million |
| 2 | Clark County | Relatively High | $124 million |
| 3 | Carson City | Relatively Moderate | $30 million |
| 4 | Douglas County | Relatively Moderate | $18 million |
| 5 | Lyon County | Relatively Moderate | $12 million |
| 6 | Churchill County | Relatively Moderate | $6.7 million |
| 7 | Nye County | Relatively Moderate | $3.8 million |
| 8 | Mineral County | Relatively Low | $2.2 million |
| 9 | Elko County | Relatively Low | $2.7 million |
| 10 | Storey County | Relatively Low | $2.4 million |
Every Nevada county, highest overall risk first
17| # | County | Overall risk | Score | Loss a year | Top hazard | Declarations | Tornadoes |
|---|---|---|---|---|---|---|---|
| 1 | Clark County | Very High | 99.6 | $813 million | Heat wave | 12 | 12 |
| 2 | Washoe County | Relatively High | 96.7 | $274 million | Earthquake | 52 | 13 |
| 3 | Elko County | Relatively Moderate | 87.9 | $75 million | Wildfire | 17 | 23 |
| 4 | Douglas County | Relatively Moderate | 84.4 | $45 million | Wildfire | 23 | 1 |
| 5 | Nye County | Relatively Low | 78.3 | $24 million | Heat wave | 3 | 5 |
| 6 | Carson City | Relatively Low | 76.1 | $41 million | Earthquake | 13 | 1 |
| 7 | Lyon County | Relatively Low | 71.4 | $33 million | Wildfire | 12 | 5 |
| 8 | Churchill County | Relatively Low | 47.3 | $16 million | Earthquake | 5 | 4 |
| 9 | Humboldt County | Very Low | 40.8 | $16 million | Wildfire | 6 | 8 |
| 10 | Lincoln County | Very Low | 25.9 | $4.8 million | Wildfire | 6 | 7 |
| 11 | Storey County | Very Low | 25.2 | $11 million | Wildfire | 11 | 0 |
| 12 | Lander County | Very Low | 17.0 | $4.1 million | Wildfire | 4 | 3 |
| 13 | White Pine County | Very Low | 12.5 | $5.5 million | Winter weather | 5 | 9 |
| 14 | Mineral County | Very Low | 9.8 | $4.0 million | Earthquake | 5 | 1 |
| 15 | Pershing County | Very Low | 6.0 | $2.3 million | Wildfire | 2 | 0 |
| 16 | Eureka County | Very Low | 5.2 | $4.2 million | Wildfire | 6 | 3 |
| 17 | Esmeralda County | Very Low | 2.1 | $1.3 million | Earthquake | 1 | 1 |
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 Nevada
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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 Nevada
Which county in Nevada has the highest natural disaster risk?
Of Nevada's 17 counties, 1 has a Very High natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025); the highest is Clark County (score 99.6 of 100), and expected losses across the state total $1.4 billion a year.
Which Nevada counties are most at risk from tornadoes?
By FEMA's National Risk Index tornado risk score: Washoe County, Clark County, Douglas County. These are planning-level estimates for whole counties, not maps of individual properties.
Which Nevada counties are most at risk from inland flooding?
By FEMA's National Risk Index inland flooding risk score: Clark County, Washoe County, Nye County. These are planning-level estimates for whole counties, not maps of individual properties.
How many FEMA disaster declarations has Nevada had?
OpenFEMA lists 114 federal disaster, emergency and fire management declarations for Nevada since 1954 (not counting COVID-19); the latest is FM-5678-NV, Bull Fire, declared 2 October 2026.