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Montana · FEMA + NOAA + National Risk Index

Fallon County, MT

8 FEMA disaster declarations (2000-2020), with a FEMA National Risk Index rating of Very Low. Most common hazard: Severe Storm.

8
FEMA declarations
6
Major disasters
5
NRI risk · Very Low
Severe Storm
Top hazard

The verdict

Start with the local benchmark for Fallon County: 8 FEMA declaration records are 27% below the Montana county mean, even though the count is higher than 6% of counties in the national registry. On FEMA's distinct National Risk Index model, which combines expected loss with vulnerability and resilience, the county ranks safer than 5%.

Safer than 5%
of U.S. counties for FEMA National Risk Index score
Very Low
FEMA National Risk Index rating
8
FEMA declarations vs 21 national county avg
1
NFIP flood insurance claims filed

FEMA's National Risk Index and its declaration registry are separate measures. This county's registry includes Major Disaster (DR) and Emergency (EM) records; an EM authorizes a narrower set of federal assistance than a DR.

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How does Fallon County compare?

Fallon County vs. all counties in this dataset

FEMA disaster declarations, all-time

8 6th percentile higher than 6% of 3,266 counties

This county 0 90 all U.S. counties FEMA tracks, bucketed by value

Each bar is a band; taller bars hold more counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source FEMA Disaster Declarations Summaries v2 · 2026-08-03

Fallon County's FEMA Risk Index score

FEMA National Risk Index composite score vs. the Montana county average

0/100100/100Montana avg33/1005.4/100
FEMA National Risk Index composite score vs. the Montana county average

What does Fallon County's hazard record show?

Declaration frequency

The state comparison is the clearest context for Fallon County's moderate federal record. Its 8 declarations sit 27% below the Montana county mean, with 6 Major Disaster entries among them. 3 records concern Severe Storm, the file's most frequent incident type. Spread across 20 years, the registry rate is 0.4 per year. FEMA reports authorized programs separately from the DR, EM, and FM codes.

FEMA National Risk Index

FEMA's National Risk Index places this county in the low end of the national distribution, composite score 5.4/100 (Very Low). Expected Annual Loss is rated Very Low (roughly $4.3M in annualized losses). Two modifiers shape how that exposure becomes real-world harm here: social vulnerability (Very Low) and community resilience (Relatively Low). Among the 18 modeled hazards, Cold Wave carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at an average of 8.2 times per year here, based on 155 historical events on record.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 1 claim and $0 paid in total. PlainHazard calls 1-49 claims a light registry record, a label for this dataset rather than a finding that flood exposure is low. A short claims history can also reflect insurance take-up, the period covered, or losses that were never insured.

Start with the state benchmark: a Montana county averages 11.0 federal declaration records, while Fallon County has 8. The gap is 27% below that mean. Fewer entries indicate a quieter history of recorded federal actions, not immunity from a hazard and not a prediction about what happens next.

47 /100

Historical Activity Index

Moderate historical activity

Fallon County, MT · PlainHazard-derived composite from federal records

This 0–100 index is an explicit PlainHazard composite from FEMA declaration history only on the county surface (this DB has no county-level NOAA damage row) . It is not FEMA's National Risk Index, not a forecast, and not a safety, insurance, or preparedness rating. Open the calculator · Methodology

FEMA Declarations (1953–present) Low
6/30

8 OpenFEMA declarations, full ingest window (0.4x national county average)

County Disaster Density Moderate
9/25

8 declarations (0.7x state county average of 11)

Major Disaster Share Very High
19/25

6 of 8 declarations are major disasters (75%)

Hazard Diversity High
13/20

5 different disaster types declared in Fallon County

Historical Declaration Activity

Activity Band

Moderate

vs. Montana Avg

-27%

State avg: 11.0

vs. National Avg

-61%

National avg: 20.7

Avg Per Year

0.4

Over 20 years

FEMA NRI 8-hazard radar - Fallon County

Fallon County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 8, Hurricane 0, Tornado 8, Wildfire 8, Drought 8, Heat Wave 8, Winter Storm 48. The simple mean of these eight displayed scores is 12 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 12 8-hazard mean
Fallon County NRI risk profile FIPS 30025 · displayed-hazard mean 12/100
How to read this radar

Each axis: NRI risk rating (Very Low-Very High) on a 0-100 scale. Rounder = broad exposure; spiky = one or two hazards dominate.

FEMA Records

8

Low volume

Major Disaster share

75%

Mostly major

NRI risk score

5

Very Low

Source: FEMA National Risk Index Per-county per-hazard ratings, December 2025 release

How often does each hazard strike Fallon County?

FEMA's National Risk Index models a historical event count and an annualized frequency for each hazard type. Most hazards are expressed as modeled occurrences per year; FEMA expresses drought and heat-wave frequency as event-days per year. These modeled frequencies are not forecasts.

Hazard NRI Risk Rating Recurrence
Cold Wave Relatively Moderate an average of 8.2 times per year
Winter Weather Relatively Low an average of 16 times per year
Wildfire Very Low roughly once every 467 years
Hail Very Low an average of 2.2 times per year
Drought Very Low 55 modeled event-days per year
Ice Storm Very Low roughly once every 6 years
Landslide Very Low roughly once every 2 years
Heat Wave Very Low 1.9 modeled event-days per year
Tornado Very Low roughly once every 6 years
Lightning Very Low an average of 32 times per year
Strong Wind Very Low an average of 1.3 times per year
Earthquake Very Low roughly once every 7,353 years
Riverine Flooding Very Low roughly once every 2 years

Source: FEMA National Risk Index Modeled annualized frequency; drought and heat wave use event-days/year, December 2025 release

Disaster Types

Severe Storm 3
Biological 2
Tornado 1
Hurricane 1
Fire 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Fallon County's record, 38% of its declarations. In FEMA's vocabulary this covers convective weather: thunderstorm straight-line winds, large hail, and the multi-day outbreaks that often carry embedded tornadoes. Activity is heaviest in spring and summer, though the season varies by region.

These events behave differently from a hurricane on paper. Damage tends to be distributed along a storm track rather than concentrated on a coastline, and a declaration typically follows an outbreak that crossed several counties over a few days, not a single point of impact. Because the qualifying threshold is the cost of uninsured public and individual losses rather than storm intensity, two similar storms can produce a declaration in one year and none in another.

Declaration counts describe past federal action. They are a record of what was declared, not a forecast of future hazard probability.

Declaration Types

What DR / EM / FM mean

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

Major Disaster - 6 75.0%

of all 8 declarations

Emergency - 2 25.0%

of all 8 declarations

FEMA Declarations Timeline

Year Declarations
2020 2
2016 1
2011 1
2008 1
2005 1
2001 1
2000 1

Disaster Declarations

How the 8 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 8 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4508 COVID-19 PANDEMIC DR Biological 2020-03-31
3476 COVID-19 EM Biological 2020-03-13
4275 TORNADO DR Tornado 2016-08-03
1996 SEVERE STORMS AND FLOODING DR Severe Storm 2011-06-17
1767 SEVERE WINTER STORM DR Severe Storm 2008-06-13
3253 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-13
1350 SEVERE WINTER STORMS DR Severe Storm 2000-12-06
1340 WILDFIRES DR Fire 2000-08-30

Storm Events in Montana

Statewide NOAA context only. PlainHazard does not currently attribute these state totals to Fallon County.

Storm Type Events Fatalities Injuries Property Damage
High Wind 3,735 1 2 $5.3M
Thunderstorm Wind 2,396 5 24 $15.1M
Hail 2,015 0 0 $4.1M
Winter Storm 1,502 13 18 $11.2M
Heavy Snow 796 5 3 $143.0K

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

NFIP Flood Insurance Claims

Total Claims

1

Total Paid

$0

Avg Per Claim

$0

Source: FEMA National Flood Insurance Program (NFIP) OpenFEMA Claims Data

FEMA National Risk Index

Overall Risk

Very Low

Score: 5.4/100

Expected Annual Loss

Very Low

$4.3M/year

Social Vulnerability

Very Low

Community Resilience

Relatively Low

Hazard Risk Breakdown

Cold Wave Relatively Moderate
Winter Weather Relatively Low
Wildfire Very Low
Hail Very Low
Drought Very Low
Ice Storm Very Low
Landslide Very Low
Heat Wave Very Low
Tornado Very Low
Lightning Very Low
Strong Wind Very Low
Earthquake Very Low
Riverine Flooding Very Low

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

The model's sharpest exposure here: Cold Wave

Cold Wave measures exposure to extreme cold rather than to snow. Its harm is concentrated in health effects, burst infrastructure and energy demand spikes, and it falls hardest where the building stock and the grid were not built with sustained cold in mind.

Worth noting for Fallon County: the model and the federal record do NOT point at the same hazard. Cold Wave carries the highest modeled rating (Relatively Moderate), while the county's declaration history is led by Severe Storm. That is not a contradiction, the two measure genuinely different things. Declarations record federal ACTION, which requires damage costly enough to exceed state and local capacity; the Risk Index models EXPECTED annual loss across all 18 hazards whether or not any declaration ever followed. A hazard can be the county's largest modeled exposure and never once have driven a declaration.

National Risk Index ratings are modeled estimates of expected annual loss, not predictions of what will happen in any given year.

Data-matched county comparisons

Fallon County's closest FEMA peer: Wayne County, IL

Comparisons use published FEMA declaration fields plus the National Risk Index composite for Fallon County. Record similarity, not a safety rating.

How these peers are chosen

Cohort: Published U.S. county equivalents outside the source state or territory. Each metric keeps six ETL candidates; three unique destinations are shown after de-duplicating across axes. Declaration-volume ranking combines count and Major-disaster share and prefers a different leading incident type; Major-share ranks the Major fraction adjusted for volume; NRI ranks the modeled composite score only.

Retained FEMA snapshot feed for Fallon County - capture-dated entries only.

Further reading for this county

Understanding disaster data

FEMA's National Risk Index flags Cold Wave as the top modeled exposure here (Relatively Moderate); the guide explains how that model differs from declaration counts.

More PlainHazard guides

Frequently Asked Questions

What is the most common disaster type in Fallon County?
The most common disaster type in Fallon County is Severe Storm, with 3 declarations. Other disaster types include Biological (2), Tornado (1), Hurricane (1).
How does Fallon County's FEMA declaration record compare with the Montana average?
The typical Montana county has 11.0 FEMA declaration records; Fallon County has 8, or 27% fewer. Against the national county mean of 20.7, this county's total is 61% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Fallon County received?
Fallon County has received 6 major disaster declarations, representing 75% of all 8 disaster declarations.
How many flood insurance claims has Fallon County filed?
Fallon County has 1 National Flood Insurance Program (NFIP) claims totaling $0 in payments, with an average of $0 per claim.
What was the worst year for disasters in Fallon County?
The most active year for disaster declarations in Fallon County was 2020, with 2 declarations. The county has FEMA disaster data spanning 2000 to 2020.
What is the FEMA National Risk Index score for Fallon County?
According to the FEMA National Risk Index, Fallon County, Montana has an overall risk score of 5.4 out of 100 (Very Low). On social vulnerability the county rates Very Low; on community resilience, Relatively Low. The Expected Annual Loss (EAL) score is Very Low, representing $4.3M in annualized losses.
Which natural hazard poses the greatest risk to Fallon County?
FEMA's NRI data points to Fallon County as of the latest release is Cold Wave (risk rating: Relatively Moderate). Other significant hazards include Winter Weather (Relatively Low) and Wildfire (Very Low). FEMA's modeled event frequency puts cold wave here at an average of 8.2 times per year, drawn from 155 historical events on record. FEMA derives these ratings from historical event frequency, the assets exposed, and the community's vulnerability profile.
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.

Flood insurance data comes from the FEMA National Flood Insurance Program (NFIP) OpenFEMA claims dataset.

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 Fallon County

Against a Montana county mean of 11 declarations, Fallon County, MT records 8, or 27% fewer. PlainHazard classifies that historical total as moderate activity.

  • Major Disaster is the largest group (6 of 8) in a declaration history that remains below its state benchmark; frequency here is not a forecast. Montana overview
  • Nationally the county exceeds 6% of recorded county totals, but its own Montana benchmark is higher. The ranking keeps those two contexts separate. Most-disaster rankings
  • A short NFIP claims file cannot establish low flood exposure; the data guide explains the limits of each federal measure. Disaster-data guide

A below-average federal record is not a safety guarantee. Use National Weather Service alerts and local emergency-management notices for present conditions, not this historical comparison.

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. See our editorial standards & corrections policy, the methodology behind these numbers, or national statistics report, the data & editorial changelog, or report a data error.