riskbycounty
FEMA National Risk Index

Sweet Grass County Disaster Risk

Sweet Grass County, Montana

FEMA Risk Rating

Very Low

National Percentile

8th

of 3,144 counties

State Rank

#41

of 56 (1 = highest risk)

Flood Risk

20th

percentile

Hazard Risk Breakdown

Flood

River, coastal, and surface flooding risk

Very Low

Higher than 20% of US counties

Wildfire

Wildland and wildland-urban interface fire risk

Moderate

Higher than 88% of US counties

Tornado

Tornado and severe thunderstorm risk

Very Low

Higher than 4% of US counties

Earthquake

Seismic activity and ground shaking risk

Very Low

Higher than 35% of US counties

Risk Advisory: Sweet Grass County

Risk Verdict

Sweet Grass County has a very low overall disaster risk profile, scoring in the 8th percentile nationally. This county is among the safer counties in the United States from a natural disaster perspective, though no area is entirely risk-free.

Hazard Breakdown

Wildfire risk is the dominant hazard for Sweet Grass County, scoring in the 88th percentile nationally. It is followed by earthquake risk at the 35th percentile. Additional hazards include flood (20th), tornado (4th).

Preparedness Context

With wildfire risk as the top concern, Sweet Grass County residents should create defensible space around your property, sign up for local emergency alerts, and prepare a go-bag with essential documents and medications. Secondary risks such as earthquake 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

Sweet Grass County is notably safer than the average county in Montana. Its composite risk score is 25.2 points lower than the state average, indicating below-average exposure to natural hazards relative to other counties in the state.

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Frequently Asked Questions

What is the natural disaster risk in Sweet Grass County, MT?
Sweet Grass County has a FEMA National Risk Index rating of Very Low, placing it in the 8th 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 Sweet Grass County?
Sweet Grass County is evaluated for five major natural hazard types: wildfire (88th percentile), earthquake (35th percentile), flooding (20th percentile), tornado (4th percentile). The highest-risk hazard is wildfire at the 88th 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 Sweet Grass County risk compare to the Montana average?
Sweet Grass County's composite risk percentile is 8th, compared to the Montana state average of 33th percentile. The state's overall risk rating is Very Low. This means Sweet Grass County faces lower natural disaster risk than the typical county in Montana.
Is Sweet Grass County at risk for wildfire?
Yes, Sweet Grass County's wildfire risk is at the 88th percentile nationally. This places it in the top quartile for this hazard type. For flooding specifically, Sweet Grass County is at the 20th 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 Sweet Grass County a safe place to live?
Sweet Grass County's composite risk score of 8th percentile is below the Montana state average of 33th percentile, indicating relatively lower exposure to natural hazards. However, no county is completely risk-free. The primary hazard type is wildfire at the 88th percentile. Residents should still maintain emergency preparedness plans and appropriate insurance coverage.

Counties with Similar Risk

Mineral County

Montana

-0.8

Very Low

7th percentile

Granite County

Montana

+1.2

Very Low

9th percentile

Powell County

Montana

+1.8

Very Low

10th 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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