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Montana · FEMA + NOAA + National Risk Index

Sweet Grass County, MT

1 FEMA disaster declarations (2022–2022), with a FEMA National Risk Index rating of Very Low. Most common hazard: Flood.

1
FEMA declarations
1
Major disasters
8
NRI risk · Very Low
Flood
Top hazard

FEMA's National Risk Index places Sweet Grass County in the top 92% of U.S. counties for overall natural-hazard risk, and its FEMA disaster-declaration count is higher than 0% of all 2,729 counties tracked.

How does Sweet Grass County compare?

Sweet Grass County
1
Montana county avg
1.8
National county avg
3.7

How disaster-prone is Sweet Grass County?

Sweet Grass County, Montana has recorded 1 FEMA disaster declarations between 2022 and 2022, of which 1 were classified as Major Disaster declarations (DR) requiring federal individual and public assistance. That puts the county's average at - declarations per year, or roughly 45% below the Montana county average of 1.8 and 73% below the national county average of 3.7.

The dominant disaster type on record is Flood, with 1 of 1 declarations falling under this category. FEMA's National Risk Index places this county in the low end of the national distribution, composite score 8.1/100 (Very Low). Expected Annual Loss is rated Very Low (roughly $5.9M in annualized losses). Two modifiers shape how that exposure becomes real-world harm here: social vulnerability (Very Low) and community resilience (Relatively Moderate). Even the county's top-rated hazard, Wildfire, only reaches Relatively Low on FEMA's scale, none of the 18 modeled hazards stand out here.

Taken together, Sweet Grass County's federal disaster history is about as quiet as U.S. counties get, a very low relative risk level on this measure.

Risk Assessment

Risk Level

Very Low

vs. Montana Avg

-45%

State avg: 1.8

vs. National Avg

-73%

National avg: 3.7

Avg Per Year

-

-

FEMA NRI 8-hazard radar - Sweet Grass County

Sweet Grass County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard composite scores for Earthquake 8, Flood 0, Hurricane 0, Tornado 8, Wildfire 25, Drought 8, Heat Wave 8, Winter Storm 25. Overall composite 10 of 100, classified Low. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 10 composite
Sweet Grass County NRI risk profile FIPS 30097 · composite 10/100 (Low)
How to read this radar

The radar plots Sweet Grass County's relative exposure to the eight headline natural hazards used by the FEMA National Risk Index. Each axis is the qualitative NRI risk rating (Very Low through Very High) re-expressed on a 0-100 scale so that the polygon shape lets you compare a county against another at a glance. A rounder polygon means broad multi-hazard exposure; a spiky polygon means one or two dominant hazards drive most of the modeled risk.

FEMA Records

1

Total declarations

NRI Source

FEMA 2023

Latest NRI release

County FIPS

30097

MT state code

Source: FEMA National Risk Index FEMA National Risk Index Per-county per-hazard ratings, 2023 release

Disaster Types

Flood 1

Declaration Types

What DR / EM / FM mean

FEMA categorizes declarations as Major Disasters (DR), Emergencies (EM), or Fire Management Assistance (FM).

Major Disaster - 1 100.0%

of all 1 declarations

FEMA Declarations Timeline

Year Declarations
2022 1

Disaster Declarations

DR# Title Type Incident Date
4655 SEVERE STORM AND FLOODING DR Flood 2022-06-16

Storm Events in Montana

Storm Type Events Fatalities Injuries Property Damage
High Wind 4,035 2 2 $7.7M
Thunderstorm Wind 2,705 5 24 $15.1M
Hail 2,205 0 0 $4.1M
Winter Storm 1,640 21 28 $11.2M
Heavy Snow 904 5 3 $143.0K

Source: NOAA Storm Events Database NOAA Storm Events Database State-level aggregated data, 2015–2025

FEMA National Risk Index

Overall Risk

Very Low

Score: 8.1/100

Expected Annual Loss

Very Low

$5.9M/year

Social Vulnerability

Very Low

Community Resilience

Relatively Moderate

Hazard Risk Breakdown

Wildfire Relatively Low
Avalanche Very Low
Landslide Very Low
Earthquake Very Low
Winter Weather Relatively Low
Cold Wave Relatively Low
Hail Very Low
Lightning Very Low
Drought Very Low
Heat Wave Very Low
Ice Storm Very Low
Tornado Very Low
Strong Wind Very Low
Volcanic Activity No Rating

Source: FEMA National Risk Index (NRI) FEMA National Risk Index (NRI) Ratings reflect relative scores among all US counties. Data: hazards.fema.gov/nri

Counties with Similar Risk in Montana

Frequently Asked Questions

How many natural disasters has Sweet Grass County, Montana had?
Sweet Grass County, Montana has received 1 FEMA disaster declarations from 2022 to 2022. Of these, 1 were major disaster declarations.
What is the most common disaster type in Sweet Grass County?
The most common disaster type in Sweet Grass County is Flood, with 1 declaration.
How does Sweet Grass County's disaster risk compare to the Montana average?
Sweet Grass County has 1 disaster declarations, which is 45% lower than the Montana county average of 1.8 declarations. Compared to the national county average of 3.7, it is 73% lower.
How many major FEMA disaster declarations has Sweet Grass County received?
Sweet Grass County has received 1 major disaster declaration, representing 100% of all 1 disaster declarations. Major disaster declarations typically involve significant damage requiring federal assistance.
What types of storms are most common in Montana?
The most common storm types in Montana include High Wind (4,035 events), Thunderstorm Wind (2,705 events), Hail (2,205 events). NOAA storm event data covers severe weather from 2015 to 2025.
What is the overall disaster risk level for Sweet Grass County?
Sweet Grass County has just 1 FEMA disaster declaration on record, placing it in the very-low-risk band, among the quieter counties in FEMA's declaration history.
What is the FEMA National Risk Index score for Sweet Grass County?
According to the FEMA National Risk Index, Sweet Grass County, Montana has an overall risk score of 8.1 out of 100 (Very Low). The county's social vulnerability rating is Very Low and community resilience is Relatively Moderate. The Expected Annual Loss (EAL) score is Very Low, representing $5.9M in annualized losses.
Which natural hazard poses the greatest risk to Sweet Grass County?
Based on FEMA NRI data, the highest-risk natural hazard in Sweet Grass County is Wildfire (risk rating: Relatively Low). Other significant hazards include Avalanche (Very Low) and Landslide (Very Low). These scores are based on FEMA's analysis of historical event frequency, exposed assets, and community vulnerability.
Data Sources & Methodology

Disaster declaration data comes from the FEMA OpenFEMA Disaster Declarations Summaries v2 API, which includes all federally declared disasters, emergencies, and fire management assistance grants.

Storm event data is sourced from the NOAA Storm Events Database (2015–2025), which tracks significant weather events including thunderstorms, tornadoes, floods, and winter storms.

This data is provided for informational purposes only. FEMA disaster declarations represent federal response actions and may not capture all local emergencies or weather events.

What this means for Sweet Grass County

Sweet Grass County, MT has 1 FEMA disaster declarations on record, a very low historical disaster load, 45% below the Montana county average.

  • Its most common federal declaration type is major disaster (1 of 1) - know the hazards most likely here before they happen. Montana overview
  • See how this county ranks against the rest of the country for disaster frequency. Most-disaster rankings
  • Read how to read FEMA declarations, NRI risk scores, and what they do and don't tell you. Disaster-data guide

Historical declaration counts describe past federal response, not a forecast. For current threats, follow the National Weather Service and local officials; in an emergency call 911.

All federal data sources used on this page
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainHazard Editorial

Verify with FEMA → · Verify with FEMA NRI → · Verify with NOAA →

Every figure on PlainHazard is rendered directly from FEMA federal disaster data, no number is typed in by an editor. This page draws directly on FEMA federal disaster data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.