Wirt County, West Virginia Natural Disaster Risk
FEMA National Risk Index assessment · WV
Very LowComposite Risk Score
National percentile: 9th
Wirt County faces very low composite natural disaster risk (NRI Risk Index score 9.0, 9th national percentile), driven primarily by landslide and riverine flood exposure. Expected annual loss across all 18 hazard types is $4M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Risk Overview
Wirt County carries a very low composite natural disaster risk, with a National Risk Index score of 9.0 out of 100 — placing it in the 9th national percentile and among the lowest-risk counties in the country. The score blends Expected Annual Loss, Social Vulnerability, and Community Resilience across all 18 FEMA hazard types.
The county's risk is driven primarily by landslide (downhill movement of rock, soil, and debris on unstable slopes) at Low risk — $16K in expected annual loss and about 0.61 events per year; riverine flood (rivers and streams overflowing their banks after heavy rain or snowmelt) at Low risk — $4M in expected annual loss and about 0.71 events per year; and hurricane (tropical cyclones bringing extreme wind, rain, and storm surge) at Very Low risk — $12K in expected annual loss and about 0.03 events per year. Across all hazards, FEMA estimates $4M in expected annual loss for a population of 5K.
Beyond physical exposure, Wirt County has a medium social vulnerability rating (how susceptible the population is to harm) and a low community resilience rating (its capacity to prepare for and recover from disasters). Both measures sit toward the lower end, indicating relatively modest population sensitivity.
History supports the rating: Wirt County has received 21 federal disaster declarations since 1967, including 9 for severe storm events and 4 for flood events. The most recent was Severe Winter Storm (winter storm), declared in January 2026.
Among 55 West Virginia counties, Wirt County ranks #55 for overall natural disaster risk.
Top Hazards
All 18 Hazard Risks
| Landslide | Low | 0.61 / yr | $16K |
| Riverine Flood | Low | 0.71 / yr | $4M |
| Hurricane | Very Low | 0.03 / yr | $12K |
| Drought | Very Low | 6.44 / yr | $13K |
| Ice Storm | Very Low | 0.14 / yr | $17K |
| Heat Wave | Very Low | 3.42 / yr | $46K |
| Earthquake | Very Low | 0.00 / yr | $11K |
| Lightning | Very Low | 45.87 / yr | $36K |
| Strong Wind | Very Low | 0.81 / yr | $61K |
| Winter Weather | Very Low | 8.26 / yr | $5K |
| Tornado | Very Low | 0.03 / yr | $33K |
| Hail | Very Low | 2.55 / yr | $16K |
| Cold Wave | Very Low | 1.00 / yr | $11K |
| Wildfire | Very Low | 0.00 / yr | $192 |
| Avalanche | Very Low | 0.00 / yr | $0 |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Disaster History
Wirt County has received 21 federal disaster declarations since 1967, most recently Severe Winter Storm in January 2026. Most frequent causes: Severe Storm (9), Flood (4), Biological (2).
| Declared | Type | Disaster |
|---|---|---|
| January 2026 | Winter Storm | Severe Winter Storm |
| April 2020 | Biological | Covid-19 Pandemic |
| March 2020 | Biological | Covid-19 |
| April 2018 | Mud/Landslide | Severe Storms, Flooding, Landslides, and Mudslides |
| May 2015 | Flood | Severe Storms, Flooding, Landslides, and Mudslides |
| March 2015 | Severe Storm | Severe Winter Storm, Flooding, Landslides, and Mudslides |
| October 2012 | Hurricane | Hurricane Sandy |
| July 2012 | Severe Storm | Severe Storms and Straight-Line Winds |
| June 2012 | Severe Storm | Severe Storms |
| May 2009 | Severe Storm | Severe Storms, Flooding, Mudslides, and Landslides |
Showing the 10 most recent of 21 declarations.
Source: FEMA Disaster Declarations Summaries (OpenFEMA).
Frequently Asked Questions
What is the overall natural disaster risk for Wirt County?
Wirt County has a composite FEMA National Risk Index score of 9.0 out of 100, placing it in the Very Low category and the 9th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Wirt County?
The three highest-rated hazards are Landslide (Low, $16K EAL), Riverine Flood (Low, $4M EAL), Hurricane (Very Low, $12K EAL). These account for most of the county's expected annual losses.
How does Wirt County compare to other West Virginia counties?
Wirt County ranks #55 of 55 West Virginia counties for overall natural disaster risk, with a very low rating.
How many federally declared disasters has Wirt County had?
FEMA records 21 federal disaster declarations for Wirt County since 1967, most often 9 for severe storm events and 4 for flood events. The most recent was Severe Winter Storm, declared in January 2026.
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. Wirt County's $4M EAL is a statistical average, not a guarantee for any specific year or address.