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

Somerset County Disaster Risk

Somerset County, Pennsylvania

FEMA Risk Rating

Relatively Low

National Percentile

64th

of 3,144 counties

State Rank

#42

of 67 (1 = highest risk)

Flood Risk

80th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 80% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Very Low

Higher than 41% of US counties

Tornado

Tornado and severe thunderstorm risk

Very Low

Higher than 35% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 54% of US counties

Hurricane

Tropical cyclone and hurricane risk

Relatively Low

Higher than 73% of US counties

Risk Overview

About Natural Disaster Risk in Somerset County, Pennsylvania

Somerset County faces below-average disaster risk

Somerset County's composite risk score of 64.22 falls slightly below Pennsylvania's state average of 67.45, placing it in the relatively low-risk category. The county experiences moderate flood risk (79.99) and hurricane exposure (73.17), but remains well-protected from wildfires (40.78) and tornadoes (35.46).

Lower-middle risk among state counties

Somerset County ranks in the lower half of Pennsylvania's risk distribution, scoring below the state average in most hazard categories. Its flood risk (79.99) is elevated, but wildfire (40.78), tornado (35.46), and earthquake (54.17) risks all remain below state averages.

Safer than Northumberland and Schuylkill

Somerset County's 64.22 score places it comfortably below Northumberland (79.17) and Schuylkill (85.31), though slightly riskier than Snyder (54.29) and Perry (53.12). Its elevated flood risk reflects its location in southwestern Pennsylvania's river valleys and mountainous terrain.

Floods are the dominant threat

Somerset County's primary hazard is flood risk (79.99), driven by regional waterways and precipitation patterns in the county's mountainous and valley topography. Secondary concerns include hurricane risk (73.17), earthquake risk (54.17), and moderate wildfire risk (40.78); tornadoes remain relatively uncommon (35.46).

Prioritize flood coverage for peace of mind

Somerset County residents should secure flood insurance to protect against the county's 79.99 flood risk, as standard homeowners policies don't cover flood damage. Additionally, ensure your policy includes wind coverage for hurricane protection, and verify earthquake coverage if your property is in a seismic zone.

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

Preparedness Guide

What to Prepare for in Somerset County

Top Hazards by Exposure

  1. #1
    FloodPrepare
    80th percentile
  2. #2
    HurricanePrepare
    73th percentile
  3. #3
    EarthquakePrepare
    54th percentile

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

Risk Advisory: Somerset County

Risk Verdict

Somerset County sits below the national average for natural disaster exposure, ranking at the 64th percentile across all U.S. counties. Understanding the specific hazards behind Somerset County's ranking helps residents prioritize where to direct emergency planning efforts.

Hazard Breakdown

Flood risk is Somerset County's dominant natural hazard, ranked at the 80th percentile nationally under FEMA's National Risk Index. Hurricane ranks second at the 73th percentile nationally. Additional tracked hazards include earthquake (54th percentile), wildfire (41th percentile), tornado (35th percentile).

Preparedness Context

With flood ranked as the primary hazard at the 80th percentile nationally, Somerset County households should build a go-bag that includes important documents, medications, and supplies to sustain the family for at least three days if evacuation is needed. Alongside flooding, hurricane exposure at the 73th percentile means households benefit from a multi-hazard preparedness plan rather than focusing on flood alone. A waterproof container for documents (insurance policies, ID, prescriptions) and a clear household communication plan for when phone networks are congested are the two highest-value low-cost preparedness steps for Somerset County households.

Regional Context

Somerset County's composite risk score is within 3.2 points of the Pennsylvania county average — a close alignment that reflects a broadly representative hazard environment for this part of the state.

Is your household prepared for Somerset 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 Somerset County, PA?
Somerset County has a FEMA National Risk Index rating of Relatively Low, placing it in the 64th 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 Somerset County?
Somerset County is evaluated for five major natural hazard types: flooding (80th percentile), hurricane (73th percentile), earthquake (54th percentile), wildfire (41th percentile), tornado (35th percentile). The highest-risk hazard is flooding 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 Somerset County risk compare to the Pennsylvania average?
Somerset County's composite risk percentile is 64th, compared to the Pennsylvania state average of 67th percentile. The state's overall risk rating is Relatively Low. This means Somerset County faces lower natural disaster risk than the typical county in Pennsylvania.
Is Somerset County at risk for flooding?
Yes, Somerset County's flooding risk is at the 80th percentile nationally. This places it in the top quartile for this hazard type.
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 Somerset County a safe place to live?
Somerset County's composite risk score of 64th percentile is below the Pennsylvania state average of 67th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is flooding at the 80th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.
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.