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

Flathead County Disaster Risk

Flathead County, Montana

FEMA Risk Rating

Relatively Moderate

National Percentile

86th

of 3,144 counties

State Rank

#1

of 56 (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

Relatively High

Higher than 95% of US counties

Tornado

Tornado and severe thunderstorm risk

Very Low

Higher than 5% of US counties

Earthquake

Seismic activity and ground shaking risk

Relatively High

Higher than 96% of US counties

Risk Overview

About Natural Disaster Risk in Flathead County, Montana

Flathead's Risk Among Nation's Highest

Flathead County's composite risk score of 86.45 places it in America's highest-risk tier, earning a "Relatively Moderate" rating. Your county faces substantial natural disaster exposure from multiple concurrent hazards.

Montana's Highest-Risk County

At 86.45, Flathead ranks as Montana's riskiest county, far exceeding the state average of 33.31. Your county concentrates the state's most significant natural disaster exposure.

Significantly Riskier Than All Neighbors

Flathead County (86.45) substantially exceeds every neighboring jurisdiction, including Gallatin (80.98) to the south and all eastern and central counties. Your northwestern location in Montana's most hazard-prone region drives this elevated profile.

Earthquake and Wildfire Converge

Earthquake risk at 95.77 and wildfire at 95.45 are nearly tied as Flathead's dominant threats, both exceeding 95. Flood risk (79.80) rounds out your triple threat, while tornadoes (4.61) present minimal danger.

Bundle Earthquake, Fire, and Flood Coverage

Flathead County residents must prioritize earthquake, wildfire, and flood insurance as essential protection—not optional add-ons. Given your county's exceptional risk profile, comprehensive coverage is critical to protecting your home and finances.

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

Preparedness Guide

What to Prepare for in Flathead County

Top Hazards by Exposure

  1. #1
    EarthquakePrepare
    96th percentile
  2. #2
    WildfirePrepare
    95th percentile
  3. #3
    FloodPrepare
    80th percentile

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

Risk Advisory: Flathead County

Risk Verdict

Natural hazard risk in Flathead County is higher than the majority of U.S. counties, with a national composite rank of 86th. Flathead County's elevated composite score reflects cumulative multi-hazard exposure; households should prepare for the county's two or three primary hazard types.

Hazard Breakdown

Earthquake risk is Flathead County's dominant natural hazard, ranked at the 96th percentile nationally under FEMA's National Risk Index. Wildfire ranks second at the 95th percentile nationally. Additional tracked hazards include flood (80th percentile), tornado (5th percentile).

Preparedness Context

At the 96th percentile nationally for earthquake risk, Flathead County is in a zone where a post-earthquake communications plan matters almost as much as pre-earthquake structural preparation — phone networks are typically congested for hours after a significant event. Wildfire at the 95th percentile nationally is a separate hazard dimension for Flathead County that requires different protective strategies from earthquake preparedness. For Flathead County households, the three highest-impact earthquake preparedness actions are: (1) anchor heavy furniture and water heaters, (2) store three days of water at one gallon per person per day, and (3) identify a family reunification plan for the post-quake communication blackout period.

Regional Context

A composite score 53.1 points above the Montana state average puts Flathead County in a higher-risk category than most counties in the state.

Is your household prepared for Flathead 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 Flathead County, MT?
Flathead County has a FEMA National Risk Index rating of Relatively Moderate, placing it in the 86th 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 Flathead County?
Flathead County is evaluated for five major natural hazard types: earthquake (96th percentile), wildfire (95th percentile), flooding (80th percentile), tornado (5th percentile). The highest-risk hazard is earthquake at the 96th 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 Flathead County risk compare to the Montana average?
Flathead County's composite risk percentile is 86th, compared to the Montana state average of 33th percentile. The state's overall risk rating is Very Low. This means Flathead County faces higher natural disaster risk than the typical county in Montana.
Is Flathead County at risk for earthquake?
Yes, Flathead County's earthquake risk is at the 96th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Flathead County is at the 80th 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 Flathead County higher risk than average?
Flathead County's composite risk score of 86th percentile is above the Montana state average of 33th percentile. This elevated risk is driven by earthquake exposure (96th percentile), along with wildfire and flooding 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.