Nye County, Nevada Natural Disaster Risk
FEMA National Risk Index assessment · NV
LowComposite Risk Score
National percentile: 78th
Nye County faces low composite natural disaster risk (NRI Risk Index score 78.3, 78th national percentile), driven primarily by heat wave and earthquake exposure. Expected annual loss across all 18 hazard types is $24M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Risk Overview
FEMA's National Risk Index rates Nye County at low composite risk, with a National Risk Index score of 78.3 out of 100 — placing it in the 78th national percentile and below the national average for natural-disaster risk. The score blends Expected Annual Loss, Social Vulnerability, and Community Resilience across all 18 FEMA hazard types.
Risk here concentrates in heat wave (prolonged periods of extreme heat that threaten health and infrastructure) at High risk — $6M in expected annual loss and about 4.43 events per year; earthquake (ground shaking from sudden movement along geologic faults) at Medium risk — $4M in expected annual loss and about 0.04 events per year; and lightning (electrical discharges from storms that ignite fires and cause casualties) at High risk — $548K in expected annual loss and about 26.38 events per year. Across all hazards, FEMA estimates $24M in expected annual loss for a population of 51K.
Beyond physical exposure, Nye County has a very high social vulnerability rating (how susceptible the population is to harm) and a very low community resilience rating (its capacity to prepare for and recover from disasters). That combination — a more vulnerable population with limited resilience — can amplify the human cost of any given event.
History supports the rating: Nye County has received 5 federal disaster declarations since 2005, including 2 for biological events and 2 for snowstorm events. The most recent was Covid-19 Pandemic (biological), declared in April 2020.
Among 17 Nevada counties, Nye County ranks #5 for overall natural disaster risk.
Top Hazards
All 18 Hazard Risks
| Heat Wave | High | 4.43 / yr | $6M |
| Earthquake | Medium | 0.04 / yr | $4M |
| Lightning | High | 26.38 / yr | $548K |
| Riverine Flood | Medium | 1.82 / yr | $13M |
| Wildfire | Low | 0.00 / yr | $275K |
| Avalanche | Low | 0.03 / yr | $4K |
| Winter Weather | Medium | 9.47 / yr | $79K |
| Landslide | Very Low | 13.31 / yr | $2K |
| Drought | Low | 127.86 / yr | $76K |
| Strong Wind | Low | 0.09 / yr | $291K |
| Volcanic Activity | Very Low | 0.00 / yr | $4 |
| Cold Wave | Very Low | 0.13 / yr | $49K |
| Hail | Very Low | 0.01 / yr | $16K |
| Tornado | Very Low | 0.14 / yr | $925 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Hurricane | Very Low | 0.00 / yr | $0 |
| Ice Storm | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
Disaster History
Nye County has received 5 federal disaster declarations since 2005, most recently Covid-19 Pandemic in April 2020. Most frequent causes: Biological (2), Snowstorm (2), Hurricane (1).
| Declared | Type | Disaster |
|---|---|---|
| April 2020 | Biological | Covid-19 Pandemic |
| March 2020 | Biological | Covid-19 |
| September 2005 | Hurricane | Hurricane Katrina Evacuation |
| February 2005 | Snowstorm | Snow |
| February 2005 | Snowstorm | Record and/Or Near Record Snow |
Source: FEMA Disaster Declarations Summaries (OpenFEMA).
Frequently Asked Questions
What is the overall natural disaster risk for Nye County?
Nye County has a composite FEMA National Risk Index score of 78.3 out of 100, placing it in the Low category and the 78th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Nye County?
The three highest-rated hazards are Heat Wave (High, $6M EAL), Earthquake (Medium, $4M EAL), Lightning (High, $548K EAL). These account for most of the county's expected annual losses.
How does Nye County compare to other Nevada counties?
Nye County ranks #5 of 17 Nevada counties for overall natural disaster risk, with a low rating.
How many federally declared disasters has Nye County had?
FEMA records 5 federal disaster declarations for Nye County since 2005, most often 2 for biological events and 2 for snowstorm events. The most recent was Covid-19 Pandemic, declared in April 2020.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Nye County's $24M EAL is a statistical average, not a guarantee for any specific year or address.