riskbycounty
FEMA National Risk Index

Adams County Disaster Risk

Adams County, Pennsylvania

FEMA Risk Rating

Relatively Low

National Percentile

68th

of 3,144 counties

State Rank

#37

of 67 (1 = highest risk)

Flood Risk

76th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 76% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Relatively Low

Higher than 44% of US counties

Tornado

Tornado and severe thunderstorm risk

Relatively Low

Higher than 46% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 73% of US counties

Hurricane

Tropical cyclone and hurricane risk

Moderate

Higher than 84% of US counties

Risk Advisory: Adams County

Risk Verdict

Adams County shows a relatively low overall disaster risk profile, scoring in the 68th percentile nationally. The county faces moderate hazard exposure relative to other U.S. counties. Standard emergency preparedness is recommended, with attention to the specific hazards that dominate locally.

Hazard Breakdown

Hurricane risk is the dominant hazard for Adams County, scoring in the 84th percentile nationally. It is followed by flood risk at the 76th percentile. Additional hazards include earthquake (73th), tornado (46th), wildfire (44th).

Preparedness Context

With hurricane risk as the top concern, Adams County residents should know your evacuation route, stockpile supplies for at least 72 hours, and review your homeowners and flood insurance policies annually. Secondary risks such as flood also warrant attention in household and community preparedness planning. FEMA recommends all households maintain at least 72 hours of food, water, and medication supplies regardless of specific hazard exposure.

Regional Context

Adams County has a disaster risk profile close to the average county in Pennsylvania. Its composite risk score is within 0.1 points of the state average, meaning its overall hazard exposure is broadly representative of Pennsylvania as a whole.

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Frequently Asked Questions

What is the natural disaster risk in Adams County, PA?
Adams County has a FEMA National Risk Index rating of Relatively Low, placing it in the 68th 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 Adams County?
Adams County is evaluated for five major natural hazard types: hurricane (84th percentile), flooding (76th percentile), earthquake (73th percentile), tornado (46th percentile), wildfire (44th percentile). The highest-risk hazard is hurricane at the 84th 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 Adams County risk compare to the Pennsylvania average?
Adams County's composite risk percentile is 68th, compared to the Pennsylvania state average of 67th percentile. The state's overall risk rating is Relatively Low. This means Adams County faces higher natural disaster risk than the typical county in Pennsylvania.
Is Adams County at risk for hurricane?
Yes, Adams County's hurricane risk is at the 84th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Adams County is at the 76th 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.
Why is Adams County higher risk than average?
Adams County's composite risk score of 68th percentile is above the Pennsylvania state average of 67th percentile. This elevated risk is driven by hurricane exposure (84th percentile), along with flooding and earthquake risk. Geographic location, terrain, climate patterns, and proximity to flood zones or fault lines all influence a county's risk profile.

Counties with Similar Risk

Clearfield County

Pennsylvania

-0.4

Relatively Low

67th percentile

Centre County

Pennsylvania

+0.4

Relatively Low

68th percentile

Bedford County

Pennsylvania

+0.7

Relatively Low

68th percentile

By Logan Johnson, Founder & Data EditorUpdated Reviewed by Logan Johnson, Founder & 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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