Natural disaster risk in King William County, Virginia
Virginia · population 17,810 · FIPS 51101
Overall: very low risk
King William County has a composite risk score of 8.3 out of 100 — higher than 8% of US counties. It ranks 112 of 133 in Virginia (1 = highest risk). Its highest-rated hazards are drought, hurricane, coastal flooding.
Drought now: No: no drought or dryness
No. On the U.S. Drought Monitor map valid 13 October 2026, no part of King William County is in drought or abnormally dry (none of D0 to D4). That has been so for 3 weeks in a row.
Drought in King William County: the last 52 weeks · droughtmonitor.unl.edu
The U.S. Drought Monitor is jointly produced by the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, the National Oceanic and Atmospheric Administration and the National Aeronautics and Space Administration. Map courtesy of NDMC.
Risk, loss, vulnerability and resilience
| Measure | Rating and score |
|---|---|
| Overall risk Expected annual loss, adjusted for social vulnerability and community resilience. |
Very low 8.3 |
| Expected annual loss About $6.3 million a year, on average, across all 18 hazards. |
Very low 18.8 |
| Social vulnerability Higher means people may find it harder to prepare and recover. |
Very low 10.6 |
| Community resilience Higher means a stronger ability to prepare, adapt and recover. |
Relatively high 72.6 |
Risk by hazard
FEMA's risk rating for each of 18 natural hazards in King William County, highest first. "Not applicable" means the hazard is not modelled here.
| Hazard | Risk rating and score |
|---|---|
| Drought | Relatively moderate 86 |
| Hurricane | Relatively low 63 |
| Coastal flooding | Relatively low 50 |
| Earthquake | Very low 36 |
| Landslide | Very low 32 |
| Heat wave | Very low 26 |
| Ice storm | Very low 22 |
| Tornado | Very low 19 |
| Inland (riverine) flooding | Very low 14 |
| Lightning | Very low 13 |
| Strong wind | Very low 12 |
| Hail | Very low 8 |
| Wildfire | Very low 8 |
| Winter weather | Very low 8 |
| Cold wave | Very low 4 |
| Avalanche | Not applicable |
| Tsunami | Insufficient data |
| Volcanic activity | Not applicable |
FEMA disaster declarations for King William County
Federal declarations that designated King William County, since 1 Jan 2024 (the period this site keeps from OpenFEMA). Older declarations are in FEMA's own dataset.
Yes. King William County has been named in 1 FEMA declaration since 1 Jan 2024. The latest is EM-3631-VA (Severe Winter Storm), declared 23 Jan 2026.
| Declaration | Kind | Incident | Declared | Individual assistance here |
|---|---|---|---|---|
| EM-3631-VA | Emergency | Severe Winter Storm | 23 Jan 2026 | No |
All FEMA declarations in Virginia, with estimated apply-by dates · Open FEMA deadlines
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). Dataset: Disaster Declarations Summaries - v2.
How to read these ratings
- Ratings run in five steps: very low, relatively low, relatively moderate, relatively high and very high. They compare a county with every other US county; they are not a measure of danger on their own.
- Scores run from 0 to 100 and are national percentiles. The bar shows the score: a score of 80 means a higher value than 80% of US counties.
- Overall risk combines the expected annual loss with social vulnerability and community resilience.
- Expected annual loss is the average yearly loss to buildings, people and agriculture the model expects from all 18 hazards.
- Social vulnerability describes how hard it may be for people to prepare for and recover from a disaster. Higher is worse.
- Community resilience describes a community's ability to prepare, adapt and recover. Higher is better.
- "Not applicable" means FEMA does not model that hazard there (for example, hurricanes far inland).
About this data
Source: FEMA National Risk Index, version 1.20, released December 2025, published by the Federal Emergency Management Agency (US public domain). About the National Risk Index. The index is a model of relative risk built from historical hazard records, what is exposed and community factors. It is not a forecast, it does not describe any single property, and it is not insurance or financial advice. For decisions about a specific address, check FEMA's flood maps and your local emergency management office.
Questions
What is the natural disaster risk in King William County, Virginia?
FEMA's National Risk Index rates the overall risk in King William County as very low, with a score of 8.3 out of 100 (higher than 8% of US counties). That is a comparison with other US counties, not a forecast.
What are the biggest natural hazards in King William County?
The hazards rated highest for King William County are drought (relatively moderate), hurricane (relatively low), coastal flooding (relatively low).
What is the flood risk in King William County?
FEMA rates inland (river and rain) flooding risk in King William County as very low, and coastal flooding risk as relatively low. For a specific property, check the FEMA flood map and your local floodplain office.
Has King William County had a FEMA disaster declaration?
Yes. King William County has been named in 1 FEMA declaration since 1 Jan 2024. The latest is EM-3631-VA (Severe Winter Storm), declared 23 Jan 2026.
Is King William County in a drought?
No. On the U.S. Drought Monitor map valid 13 October 2026, no part of King William County is in drought or abnormally dry (none of D0 to D4). That has been so for 3 weeks in a row.
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