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Montana · FEMA + NOAA + National Risk Index

Granite County, MT

8 FEMA disaster declarations (1981-2020), with a FEMA National Risk Index rating of Very Low. Most common hazard: Biological.

8
FEMA declarations
5
Major disasters
9
NRI risk · Very Low
Biological
Top hazard

The verdict

Start with the local benchmark for Granite 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 9%.

Safer than 9%
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
7
NFIP flood insurance claims filed

FEMA's National Risk Index and its declaration registry are separate measures. This county's registry includes Fire Management Assistance (FM) records, which are not presidential disaster declarations, alongside Major Disaster (DR) and Emergency (EM) records.

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How does Granite County compare?

Granite 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

Granite County's FEMA Risk Index score

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

0/100100/100Montana avg33/1009.4/100
FEMA National Risk Index composite score vs. the Montana county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Granite County is led by Riverine Flooding (about $1.3M Expected Annual Loss, Historical Loss Ratio Relatively Moderate), while Landslide carries the highest National Risk Index rating (Relatively Moderate). EAL and risk score use different inputs; they need not agree.

Source: FEMA National Risk Index (December 2025 release) - Expected Annual Loss vs composite risk rating by hazard.

What does Granite County's hazard record show?

Declaration frequency

The state comparison is the clearest context for Granite County's moderate federal record. Its 8 declarations sit 27% below the Montana county mean, with 5 Major Disaster entries among them. 2 records concern Biological, the file's most frequent incident type. Spread across 39 years, the registry rate is 0.2 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 9.4/100 (Very Low). Expected Annual Loss is rated Very Low (roughly $4.2M in annualized losses). Two modifiers shape how that exposure becomes real-world harm here: social vulnerability (Relatively Moderate) and community resilience (Relatively Low). Among the 18 modeled hazards, Landslide carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at an average of 1.2 times per year here.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 7 claims and $16.9K 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 Granite 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.

44 /100

Historical Activity Index

Moderate historical activity

Granite 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 High
16/25

5 of 8 declarations are major disasters (63%)

Hazard Diversity High
13/20

5 different disaster types declared in Granite 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

0.2

Over 39 years

FEMA NRI 8-hazard radar - Granite County

Granite 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 25, Drought 8, Heat Wave 8, Winter Storm 25. The simple mean of these eight displayed scores is 11 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 11 8-hazard mean
Granite County NRI risk profile FIPS 30039 · displayed-hazard mean 11/100
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

63%

Major-heavy

NRI risk score

9

Very Low

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

How often does each hazard strike Granite 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
Landslide Relatively Moderate an average of 1.2 times per year
Wildfire Relatively Low roughly once every 180 years
Avalanche Relatively High roughly once every 5 years
Winter Weather Relatively Low an average of 53 times per year
Earthquake Very Low roughly once every 184 years
Cold Wave Relatively Low an average of 2.9 times per year
Ice Storm Relatively Low roughly once every 7 years
Drought Very Low 47 modeled event-days per year
Riverine Flooding Very Low roughly once every 4 years
Lightning Very Low an average of 28 times per year
Hail Very Low roughly once every 2 years
Heat Wave Very Low 0.4 modeled event-days per year
Strong Wind Very Low roughly once every 3 years
Tornado Very Low roughly once every 34 years

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

Disaster Types

Biological 2
Fire 2
Flood 2
Severe Storm 1
Hurricane 1

What Biological declarations mean here

Biological is the most frequent declaration type on Granite County's record, 25% of its declarations. In practice this category is dominated by the COVID-19 declarations of 2020, which were issued across every US state and territory rather than in response to any local hazard event.

This has a direct consequence for how Granite County's number should be read. Because those declarations reached essentially every county in the country, they raise every county's total by a similar amount and tell you nothing about local hazard exposure. A county whose record is led by Biological declarations is, in most cases, a county with a genuinely quiet weather-hazard history, the pandemic records are simply the largest thing in an otherwise short list.

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 - 5 62.5%

of all 8 declarations

Emergency - 2 25.0%

of all 8 declarations

Fire Management - 1 12.5%

of all 8 declarations

FEMA Declarations Timeline

Year Declarations
2020 2
2011 1
2005 1
2000 2
1986 1
1981 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
1996 SEVERE STORMS AND FLOODING DR Severe Storm 2011-06-17
3253 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-13
1340 WILDFIRES DR Fire 2000-08-30
2317 MT-SOUTHWESTERN ZONE TWO FIRE COMPLEX FM Fire 2000-08-05
761 HEAVY RAINS, LANDSLIDES & FLOODING DR Flood 1986-03-15
640 SEVERE STORMS & FLOODING DR Flood 1981-05-27

Storm Events in Montana

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

7

Total Paid

$16.9K

Avg Per Claim

$2.4K

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 9.4/100

Expected Annual Loss

Very Low

$4.2M/year

Social Vulnerability

Relatively Moderate

Community Resilience

Relatively Low

Hazard Risk Breakdown

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

Landslide risk is a function of slope, soil and water, so it is usually a SECOND-ORDER hazard: it is triggered by the rainfall, snowmelt, wildfire burn scars or seismic shaking that came first. That is why a county can carry high landslide exposure whose realized damage is recorded under a flood or storm declaration instead.

Worth noting for Granite County: the model and the federal record do NOT point at the same hazard. Landslide carries the highest modeled rating (Relatively Moderate), while the county's declaration history is led by Biological. 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

Granite County's closest FEMA peer: Christian County, IL

Comparisons use published FEMA declaration fields plus the National Risk Index composite for Granite 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 Granite County - capture-dated entries only.

Further reading for this county

Understanding disaster data

FEMA's National Risk Index flags Landslide 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 Granite County?
The most common disaster type in Granite County is Biological, with 2 declarations. Other disaster types include Fire (2), Flood (2), Severe Storm (1).
How does Granite County's FEMA declaration record compare with the Montana average?
The typical Montana county has 11.0 FEMA declaration records; Granite 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 Granite County received?
Granite County has received 5 major disaster declarations, representing 63% of all 8 disaster declarations.
How many flood insurance claims has Granite County filed?
Granite County has 7 National Flood Insurance Program (NFIP) claims totaling $16.9K in payments, with an average of $2.4K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Granite County?
No. In Granite County, Landslide has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $1.3M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Granite County?
The most active year for disaster declarations in Granite County was 2000, with 2 declarations. The county has FEMA disaster data spanning 1981 to 2020.
What is the FEMA National Risk Index score for Granite County?
According to the FEMA National Risk Index, Granite County, Montana has an overall risk score of 9.4 out of 100 (Very Low). The county's social vulnerability rating is Relatively Moderate and community resilience is Relatively Low. The Expected Annual Loss (EAL) score is Very Low, representing $4.2M in annualized losses.
Which natural hazard poses the greatest risk to Granite County?
FEMA's NRI data points to Granite County as of the latest release is Landslide (risk rating: Relatively Moderate). Other significant hazards include Wildfire (Relatively Low) and Avalanche (Relatively High). FEMA's modeled event frequency puts landslide here at an average of 1.2 times per year. 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 Granite County

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

  • Major Disaster is the largest group (5 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.