Dinwiddie County, Virginia Natural Disaster Risk
FEMA National Risk Index assessment · VA
Very LowComposite Risk Score
National percentile: 19th
Dinwiddie County faces very low composite natural disaster risk (NRI Risk Index score 19.3, 19th national percentile), driven primarily by drought and hurricane exposure. Expected annual loss across all 18 hazard types is $7M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Risk Overview
Overall natural disaster risk in Dinwiddie County is very low, with a National Risk Index score of 19.3 out of 100 — placing it in the 19th 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 drought (extended dry periods that stress water supplies and agriculture) at High risk — $2M in expected annual loss and about 6.49 events per year; hurricane (tropical cyclones bringing extreme wind, rain, and storm surge) at Low risk — $432K in expected annual loss and about 0.15 events per year; and earthquake (ground shaking from sudden movement along geologic faults) at Very Low risk — $372K in expected annual loss and about 0.00 events per year. Across all hazards, FEMA estimates $7M in expected annual loss for a population of 28K.
Beyond physical exposure, Dinwiddie County has a low 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.
The federal record bears this out: Dinwiddie County has received 22 federal disaster declarations since 1972, including 8 for hurricane events and 4 for severe storm events. The most recent was Severe Winter Storm (winter storm), declared in January 2026.
Among 133 Virginia counties, Dinwiddie County ranks #79 for overall natural disaster risk.
Top Hazards
All 18 Hazard Risks
| Drought | High | 6.49 / yr | $2M |
| Hurricane | Low | 0.15 / yr | $432K |
| Earthquake | Very Low | 0.00 / yr | $372K |
| Winter Weather | Low | 5.05 / yr | $51K |
| Heat Wave | Low | 5.42 / yr | $261K |
| Ice Storm | Low | 1.24 / yr | $42K |
| Tornado | Low | 0.26 / yr | $456K |
| Lightning | Low | 43.84 / yr | $89K |
| Cold Wave | Very Low | 0.47 / yr | $268K |
| Riverine Flood | Very Low | 0.50 / yr | $3M |
| Wildfire | Very Low | 0.00 / yr | $9K |
| Strong Wind | Low | 0.98 / yr | $200K |
| Hail | Very Low | 2.39 / yr | $50K |
| Landslide | Very Low | 0.17 / yr | $35 |
| 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
Dinwiddie County has received 22 federal disaster declarations since 1972, most recently Severe Winter Storm in January 2026. Most frequent causes: Hurricane (8), Severe Storm (4), Snowstorm (3).
| Declared | Type | Disaster |
|---|---|---|
| January 2026 | Winter Storm | Severe Winter Storm |
| May 2021 | Severe Ice Storm | Severe Winter Storms |
| April 2020 | Biological | Covid-19 Pandemic |
| March 2020 | Biological | Covid-19 |
| December 2018 | Hurricane | Tropical Storm Michael |
| September 2018 | Hurricane | Hurricane Florence |
| October 2012 | Hurricane | Hurricane Sandy |
| July 2012 | Severe Storm | Severe Storms and Straight-Line Winds |
| September 2011 | Hurricane | Hurricane Irene |
| September 2006 | Severe Storm | Tropical Depression Ernesto, Severe Storms and Flooding |
Showing the 10 most recent of 22 declarations.
Source: FEMA Disaster Declarations Summaries (OpenFEMA).
Frequently Asked Questions
What is the overall natural disaster risk for Dinwiddie County?
Dinwiddie County has a composite FEMA National Risk Index score of 19.3 out of 100, placing it in the Very Low category and the 19th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Dinwiddie County?
The three highest-rated hazards are Drought (High, $2M EAL), Hurricane (Low, $432K EAL), Earthquake (Very Low, $372K EAL). These account for most of the county's expected annual losses.
How does Dinwiddie County compare to other Virginia counties?
Dinwiddie County ranks #79 of 133 Virginia counties for overall natural disaster risk, with a very low rating.
How many federally declared disasters has Dinwiddie County had?
FEMA records 22 federal disaster declarations for Dinwiddie County since 1972, most often 8 for hurricane events and 4 for severe storm 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. Dinwiddie County's $7M EAL is a statistical average, not a guarantee for any specific year or address.