riskbycounty
FEMA NRI 1.19.0Updated Nov 2023 · Coverage 2014–2023Methodology

Louisa County Disaster Risk

Louisa County, Virginia

FEMA Risk Rating

Very Low

National Percentile

32th

of 3,144 counties

State Rank

#61

of 133 (1 = highest risk)

Flood Risk

38th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Very Low

Higher than 38% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Very Low

Higher than 23% of US counties

Tornado

Tornado and severe thunderstorm risk

Very Low

Higher than 33% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 76% of US counties

Hurricane

Tropical cyclone and hurricane risk

Relatively Low

Higher than 80% of US counties

Risk Overview

About Natural Disaster Risk in Louisa County, Virginia

Louisa: Low Risk Despite Hazards

Louisa County's composite risk score of 32.19 and Very Low rating keep it slightly below the national disaster risk average. Your county faces fewer cumulative natural hazard threats than most U.S. counties.

Nearly Meets Virginia's Average

At 32.19, Louisa County sits just below Virginia's state average of 33.27, reflecting roughly average disaster risk within the commonwealth. Your county is comparable to other Virginia counties in overall hazard exposure.

Higher Risk Than Central Virginia Peers

Louisa's 32.19 score exceeds safer nearby counties like Lexington City (3.72) but matches Lancaster County (32.28). Your county faces notably higher hazard exposure than its western and southern neighbors.

Earthquakes and Hurricanes Lead Hazards

Louisa County faces elevated earthquake risk (76.37) and significant hurricane exposure (79.85), both driven by regional seismic activity and Atlantic weather patterns. Tornadoes (33.30) and wildfires (22.71) present secondary concerns; flooding is moderate at 38.49.

Hurricane and Earthquake Coverage Needed

Your county's elevated hurricane (79.85) and earthquake (76.37) risks warrant comprehensive coverage—add flood protection to your homeowners policy and consider earthquake insurance. Review your wind and storm damage coverage regularly given the persistent Atlantic hurricane exposure.

Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor

Preparedness Guide

What to Prepare for in Louisa County

Top Hazards by Exposure

  1. #1
    HurricanePrepare
    80th percentile
  2. #2
    EarthquakePrepare
    76th percentile
  3. #3
    FloodPrepare
    38th percentile

Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)

Local Resources

Risk Advisory: Louisa County

Risk Verdict

At the 32th percentile nationally, Louisa County experiences relatively limited natural hazard pressure compared to most of the country. At the 32th percentile nationally, Louisa County's natural hazard profile is comparatively favorable — community resilience is reinforced when individual households maintain a reviewed emergency plan.

Hazard Breakdown

Hurricane risk is Louisa County's dominant natural hazard, ranked at the 80th percentile nationally under FEMA's National Risk Index. Earthquake ranks second at the 76th percentile nationally. Additional tracked hazards include flood (38th percentile), tornado (33th percentile), wildfire (23th percentile).

Preparedness Context

Louisa County ranks at the 80th percentile nationally for hurricane risk. For coastal counties, wind-resistant shutters or impact-rated windows represent the highest single structural investment for reducing property damage. Louisa County's earthquake exposure at the 76th percentile nationally adds a hazard layer that can persist or intensify after hurricane-force winds have passed, particularly in low-lying inland areas. For extended post-storm outages common in Louisa County's hurricane zone, a portable generator (operated outdoors only) and a supply of non-perishable food for at least seven days provides meaningful household resilience.

Regional Context

The county's composite score diverges by only 1.1 points from the Virginia average, making Louisa County's hazard profile broadly typical for this part of the state.

Is your household prepared for Louisa County's hazards?

Review FEMA's county-specific preparedness checklists and emergency planning guides.

FEMA Ready Guide →

Frequently Asked Questions

What is the natural disaster risk in Louisa County, VA?
Louisa County has a FEMA National Risk Index rating of Very Low, placing it in the 32th percentile nationally out of 3,144 counties. This composite score reflects the county's overall exposure to natural hazards including floods, wildfires, tornadoes, earthquakes, and hurricanes, weighted by expected annual loss and social vulnerability.
What types of natural hazards affect Louisa County?
Louisa County is evaluated for five major natural hazard types: hurricane (80th percentile), earthquake (76th percentile), flooding (38th percentile), tornado (33th percentile), wildfire (23th percentile). The highest-risk hazard is hurricane at the 80th percentile nationally. These scores are derived from FEMA's National Risk Index, which analyzes expected annual loss, social vulnerability, and community resilience for each hazard type.
How does Louisa County risk compare to the Virginia average?
Louisa County's composite risk percentile is 32th, compared to the Virginia state average of 33th percentile. The state's overall risk rating is Very Low. This means Louisa County faces lower natural disaster risk than the typical county in Virginia.
Is Louisa County at risk for hurricane?
Yes, Louisa County's hurricane risk is at the 80th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Louisa County is at the 38th percentile.
How is natural disaster risk measured?
FEMA's National Risk Index (NRI) calculates risk scores for 18 natural hazard types across all U.S. counties and census tracts. The composite score combines Expected Annual Loss (estimated dollar losses from each hazard), Social Vulnerability (demographic factors affecting disaster impact), and Community Resilience (ability to recover). Percentile scores rank each county against all 3,144 U.S. counties, and risk ratings range from Very Low to Very High.
Is Louisa County a safe place to live?
Louisa County's composite risk score of 32th percentile is below the Virginia state average of 33th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is hurricane at the 80th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.

Counties with Similar Risk

Lancaster County

Virginia

+0.1

Very Low

32th percentile

Campbell County

Virginia

-0.2

Very Low

32th percentile

Prince Edward County

Virginia

+0.2

Very Low

32th percentile

By Evan Brooks, Data EditorUpdated Reviewed by Evan Brooks, Data Editor

Data Source

Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.

Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.

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