Lancaster County, Virginia: Natural Disaster Risk and History
Lancaster County, Virginia has a Very Low natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025): a score of 32.3 out of 100, higher than about 32% of US counties, with drought, hurricanes and coastal flooding scoring highest of its 18 hazards and $7.5 million a year in expected losses.
OpenFEMA lists 23 federal disaster declarations that included Lancaster County since 1972, not counting 2 for COVID-19; the latest is EM-3631-VA (Severe Winter Storm, declared 23 January 2026). NOAA's Storm Prediction Center recorded 10 tornadoes touching Lancaster County from 1950 to 2025.
Live weather alerts for Virginia All official warnings Latest FEMA declarations
Population 10,919 Buildings worth $3.6 billion Area 234 sq mi Risk rank in Virginia 60 of 133 FIPS 51103
All 18 hazards, highest risk first
FEMA National Risk Index| Hazard | Risk rating | Score | Expected loss a year | How often | Events in record |
|---|---|---|---|---|---|
| Drought | Relatively High | 95.6 | $2.0 million | about 3.5 a year | 98 |
| Hurricane | Relatively Moderate | 85.5 | $2.9 million | about once every 5.7 years | 60 |
| Coastal flooding | Relatively Moderate | 60.6 | $394,375 | about 3.7 a year | — |
| Ice storm | Relatively Low | 45.9 | $50,717 | about once a year | 59 |
| Earthquake | Very Low | 42.9 | $131,709 | about once every 826 years | — |
| Strong wind | Relatively Low | 31.6 | $221,321 | about 1.4 a year | 41 |
| Heat wave | Very Low | 29.8 | $96,289 | about 5.1 a year | 77 |
| Landslide | Very Low | 25.1 | $139 | about once every 24 years | — |
| Cold wave | Relatively Low | 24.5 | $223,724 | about once every 1.1 years | 17 |
| Tornado | Very Low | 21.4 | $191,000 | about once every 8.4 years | 10 |
| Wildfire | Very Low | 18.4 | $4,782 | rarer than once in 1,000 years | — |
| Inland flooding | Very Low | 13.7 | $1.2 million | about once every 2.5 years | 11 |
| Lightning | Very Low | 11.7 | $28,436 | about 4 a year | 18,180 strikes |
| Winter weather | Very Low | 10.9 | $6,079 | about 4.8 a year | 92 |
| Hail | Very Low | 10.3 | $23,594 | about 2 a year | 104 |
| Avalanche | Not Applicable | — | — | — | — |
| Tsunami | Insufficient Data | — | — | — | — |
| Volcanic activity | Not Applicable | — | — | — | — |
Score: FEMA's percentile among US counties that face the hazard (higher = more risk). Expected loss: FEMA's modelled average yearly loss to buildings, people (as a statistical value) and crops. How often: FEMA's annualised frequency of the hazard in the county; for some hazards it counts event-days, so it is a rough guide, not a forecast. "Not Applicable" means FEMA does not model that hazard here.
Federal disaster declarations 23
Most common: Hurricane 12, Snowstorm 3, Severe Storm 2, Flood 2.
| Decade | Declarations | Incident types |
|---|---|---|
| 1970s | 3 | Drought, Freezing, Flood |
| 1980s | 1 | Flood |
| 1990s | 6 | Hurricane ×3, Snowstorm ×3 |
| 2000s | 4 | Severe Storm ×2, Hurricane ×2 |
| 2010s | 7 | Hurricane ×7 |
| 2020s | 2 | Winter Storm, Severe Ice Storm |
The last 10
Widest declarations that included Lancaster County
- Severe Winter Storm (2026, EM-3631-VA): 133 Virginia counties designated.
- Hurricane Florence (2018, EM-3403-VA): 133 Virginia counties designated.
- Hurricane Sandy (2012, EM-3359-VA): 133 Virginia counties designated.
Named storms in its declarations: Tropical Storm Michael (2018), Hurricane Florence (2018), Hurricane Sandy (2012), Hurricane Irene (2011), Tropical Depression Ernesto (2006), Hurricane Katrina (2005), Hurricane Isabel (2003), Hurricane Floyd (1999), Hurricane Fran (1996), Tropical Storm Agnes (1972).
Not counted above: 2 COVID-19 ("Biological") declarations — in 2020 every US county was included. Virginia also had 3 statewide declarations with no county list.
Tornado record since 1950 10
| Tornadoes touching the county | 10 |
|---|---|
| Strongest-rated | (E)F2 ×1 |
| Peak month | August (3) |
| Deadliest | 4 Aug 2020, EF2, 15.6 mi path, 0 killed, 5 injured |
| Longest path | 4 Aug 2020, EF2, 15.6 mi path, 0 killed, 5 injured |
| Most recent | 5 Jul 2022, EF0, 11.5 mi path |
| Deaths / injuries on those paths | 0 / 5 |
| Rating | (E)F0 | (E)F1 | (E)F2 | (E)F3 | (E)F4 | (E)F5 | Unrated |
|---|---|---|---|---|---|---|---|
| Count | 4 | 5 | 1 | 0 | 0 | 0 | 0 |
| Decade | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
|---|---|---|---|---|---|---|---|---|
| Count | 0 | 0 | 1 | 0 | 2 | 1 | 4 | 2 |
Deaths and injuries are for each tornado's whole path, which can run beyond this county. F-scale ratings before February 2007, Enhanced Fujita (EF) after.
How Lancaster County compares with its 5 nearest counties
| County | Distance | Overall risk | Score | Top hazard |
|---|---|---|---|---|
| Lancaster County (this page) | — | Very Low | 32.3 | Drought |
| Middlesex County | 15 km | Very Low | 23.8 | Hurricane |
| Northumberland County | 17 km | Very Low | 40.0 | Drought |
| Richmond County | 32 km | Very Low | 10.4 | Drought |
| Mathews County | 35 km | Very Low | 12.2 | Coastal flooding |
| Gloucester County | 36 km | Very Low | 22.6 | Hurricane |
Nearest by distance between county centres. Every county in Virginia, ranked.
Vulnerability and resilience
| Social vulnerability | Very High 87.8 |
|---|---|
| Community resilience | Very High 93.9 |
| Community risk factor | 1.45 |
| Expected annual loss, all hazards | $7.5 million |
FEMA scales expected losses up where social vulnerability is high (people who may find it harder to prepare, evacuate or recover) and down where community resilience is high. A factor above 1 raises the risk score. For social vulnerability a high rating is worse; for resilience a high rating is better.
Prepare for Lancaster County's main hazards
- Right now: National Weather Service alerts for Virginia · all official warnings on Global Incident Tracker.
- Drought: Drought monitor for Virginia
- Hurricane: Is there a hurricane now? · Cyclone preparation
- Coastal flooding: Flood safety: why shallow water kills · Hurricanes and storms now
- Your property's flood zone: FEMA Flood Map Service Center ↗ — this page cannot tell you that.
- Official preparedness guidance: Ready.gov ↗ and your county emergency management office.
What this page shows, and what it misses
FEMA's National Risk Index rates a whole county against every other US county; it is a planning-level estimate for nationwide comparison, not a flood-zone map and not a substitute for a local risk assessment or the risk to one home. Declarations are presidential disaster, emergency and fire management declarations that named this county; state declarations and SBA or USDA designations are not included. Tornadoes are counted when the county is one of up to four listed on the track; 670 tornadoes that crossed a state line carry no county list in NOAA's file and are left out.
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 Lancaster County
What natural disasters is Lancaster County, Virginia most at risk from?
Lancaster County, Virginia has a Very Low natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025): a score of 32.3 out of 100, higher than about 32% of US counties, with drought, hurricanes and coastal flooding scoring highest of its 18 hazards and $7.5 million a year in expected losses.
How many federal disaster declarations has Lancaster County had?
OpenFEMA lists 23 federal disaster declarations that included Lancaster County since 1972, not counting 2 for COVID-19; the latest is EM-3631-VA (Severe Winter Storm, declared 23 January 2026). Another 3 Virginia declarations were made statewide without a county list.
How many tornadoes have hit Lancaster County?
NOAA's Storm Prediction Center recorded 10 tornadoes touching Lancaster County from 1950 to 2025. The deadliest: 4 Aug 2020, EF2, 15.6 mi path, 0 killed, 5 injured (deaths and injuries are for the whole path).
Is the National Risk Index a flood zone map?
No. The National Risk Index is a planning-level estimate for a whole county, built for nationwide comparison. It does not tell you the flood zone or the risk of a single property: for that, look up the address on FEMA's Flood Map Service Center (msc.fema.gov) and ask your local floodplain manager.