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

Somerset County Disaster Risk

Somerset County, Maine

FEMA Risk Rating

Relatively Low

National Percentile

68th

of 3,144 counties

State Rank

#6

of 16 (1 = highest risk)

Flood Risk

62th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Relatively Low

Higher than 62% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Very Low

Higher than 22% of US counties

Tornado

Tornado and severe thunderstorm risk

Very Low

Higher than 16% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively Low

Higher than 59% of US counties

Hurricane

Tropical cyclone and hurricane risk

Moderate

Higher than 86% of US counties

Risk Overview

About Natural Disaster Risk in Somerset County, Maine

Somerset faces moderate hazard exposure

Somerset County's composite risk score of 67.94 places it in the relatively low category but above the national average, reflecting meaningful exposure to multiple natural hazards. The county experiences elevated risks across earthquakes (59.35), hurricanes (85.90), and floods (61.80), creating a diverse disaster profile typical of inland New England. This regional pattern reflects Somerset's location in a seismic zone vulnerable to Atlantic tropical storm influence.

Mid-range risk among Maine counties

Somerset County's 67.94 composite score ranks it fourth among Maine's 16 counties, exceeding the state average of 56.75 by 11 points. The county sits between lower-risk peers like Waldo (40.62) and higher-risk neighbors like Penobscot (78.02), positioning it as a moderate-concern area requiring balanced disaster preparedness. Its risk profile is comparable to Oxford County (65.90), its geographic neighbor to the south.

Slightly riskier than Oxford to the south

Somerset's 67.94 score marginally exceeds neighboring Oxford County (65.90) to the south, reflecting comparable but distinct hazard patterns. The county faces similar hurricane (85.90 vs. 86.11) and earthquake exposure (59.35 vs. 60.27) but greater flood risk (61.80 vs. 73.25). To the north, Piscataquis County (52.35) presents substantially lower risk, primarily due to its inland location and lower flood exposure.

Hurricanes and earthquakes are priorities

Hurricane risk at 85.90 represents Somerset County's most significant natural hazard threat, with tropical storms capable of affecting the region through direct wind and precipitation impacts. Earthquake risk at 59.35 poses a secondary but substantial concern, particularly for older structures not designed to withstand seismic forces. Flood risk at 61.80 rounds out the top three hazards, affecting river valleys and areas with poor drainage infrastructure.

Earthquake and hurricane protection essential

Earthquake insurance becomes important in Somerset County given the 59.35 score, protecting against foundation damage and structural failure that standard policies exclude. Wind and hail coverage is critical for the 85.90 hurricane risk, and flood insurance should cover properties in river valleys and low-lying areas. Seismic retrofitting of foundations and roof reinforcement provide cost-effective complements to comprehensive insurance coverage.

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
    HurricanePrepare
    86th percentile
  2. #2
    FloodPrepare
    62th percentile
  3. #3
    EarthquakePrepare
    59th percentile

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

Risk Advisory: Somerset County

Risk Verdict

Somerset County ranks at the 68th percentile nationally for natural disaster risk — below the median for U.S. counties. Residents are encouraged to understand which hazards dominate locally and tailor their preparedness accordingly.

Hazard Breakdown

Hurricane risk is Somerset County's dominant natural hazard, ranked at the 86th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 62th percentile nationally. Additional tracked hazards include earthquake (59th percentile), wildfire (22th percentile), tornado (16th percentile).

Preparedness Context

Somerset County ranks at the 86th 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. Flood, the county's second-ranked hazard at the 62th percentile nationally, represents an additional preparedness consideration for Somerset County independent of hurricane season. For extended post-storm outages common in Somerset 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

Compared to other Maine counties, Somerset County runs 11.2 composite risk points higher than the state mean — reflecting above-average hazard concentration in this area.

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, ME?
Somerset 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 Somerset County?
Somerset County is evaluated for five major natural hazard types: hurricane (86th percentile), flooding (62th percentile), earthquake (59th percentile), wildfire (22th percentile), tornado (16th percentile). The highest-risk hazard is hurricane at the 86th 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 Maine average?
Somerset County's composite risk percentile is 68th, compared to the Maine state average of 57th percentile. The state's overall risk rating is Relatively Low. This means Somerset County faces higher natural disaster risk than the typical county in Maine.
Is Somerset County at risk for hurricane?
Yes, Somerset County's hurricane risk is at the 86th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Somerset County is at the 62th 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 Somerset County higher risk than average?
Somerset County's composite risk score of 68th percentile is above the Maine state average of 57th percentile. This elevated risk is driven by hurricane exposure (86th 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.
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.