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Illinois · FEMA + NOAA + National Risk Index

Boone County, IL

11 FEMA disaster declarations (1967-2020), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Snowstorm.

11
FEMA declarations
5
Major disasters
57
NRI risk · Relatively Low
Snowstorm
Top hazard

The verdict

Boone County has a nationally busy FEMA history: 11 declarations, more than 12% of counties in this registry. But the state comparison tempers that reading: the total is 14% below the Illinois county mean. FEMA's separate National Risk Index places the county in the riskiest 43%; that score models loss and vulnerability rather than counting declarations.

Riskiest 43%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
11
FEMA declarations vs 21 national county avg
46
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 Boone County compare?

Boone County vs. all counties in this dataset

FEMA disaster declarations, all-time

11 12th percentile higher than 12% 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

Boone County's FEMA Risk Index score

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

0/100100/100Illinois avg55/10057.3/100
FEMA National Risk Index composite score vs. the Illinois county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Boone County is led by Riverine Flooding (about $11.3M Expected Annual Loss, Historical Loss Ratio Relatively High), while Hail 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 Boone County's hazard record show?

FEMA National Risk Index

This county carries a high composite score on FEMA's National Risk Index, 57.3/100, rated Relatively Low. Its Expected Annual Loss rating is Relatively Low (roughly $21.4M in annualized losses), and a Relatively Low social-vulnerability profile combined with Relatively High community resilience shapes how much of that raw exposure becomes realized harm. Among the 18 modeled hazards, Hail carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at an average of 4.7 times per year here, based on 177 historical events on record.

Declaration frequency

Nationally, Boone County's 11 FEMA records form a high-volume history; within Illinois, however, the count is 14% below the county mean. 5 entries carry the Major Disaster classification. The largest incident group is Snowstorm, appearing 5 times. The full 53-year record averages 0.2 declarations annually. A DR label alone does not say whether Individual Assistance, Public Assistance, or both followed.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 46 claims and $271.3K 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 Illinois county averages 12.9 federal declaration records, while Boone County has 11. The gap is 14% 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.

43 /100

Historical Activity Index

Moderate historical activity

Boone County, IL · 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) Moderate
8/30

11 OpenFEMA declarations, full ingest window (0.5x national county average)

County Disaster Density Moderate
11/25

11 declarations (0.9x state county average of 13)

Major Disaster Share Moderate
11/25

5 of 11 declarations are major disasters (45%)

Hazard Diversity High
13/20

5 different disaster types declared in Boone County

Historical Declaration Activity

Activity Band

High

vs. Illinois Avg

-14%

State avg: 12.9

vs. National Avg

-47%

National avg: 20.7

Avg Per Year

0.2

Over 53 years

FEMA NRI 8-hazard radar - Boone County

Boone County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 25, Hurricane 8, Tornado 48, Wildfire 8, Drought 25, Heat Wave 25, Winter Storm 48. The simple mean of these eight displayed scores is 24 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 24 8-hazard mean
Boone County NRI risk profile FIPS 17007 · displayed-hazard mean 24/100
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

11

Low volume

Major Disaster share

45%

Mixed major share

NRI risk score

57

Relatively Low

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

How often does each hazard strike Boone 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
Hail Relatively Moderate an average of 4.7 times per year
Tornado Relatively Moderate roughly once every 4 years
Cold Wave Relatively Moderate an average of 5.6 times per year
Lightning Relatively Moderate an average of 40 times per year
Riverine Flooding Relatively Low roughly once every 1 years
Strong Wind Relatively Moderate an average of 6.2 times per year
Drought Relatively Low 10 modeled event-days per year
Heat Wave Relatively Low 3 modeled event-days per year
Earthquake Very Low roughly once every 935 years
Winter Weather Relatively Low an average of 15 times per year
Ice Storm Relatively Low roughly once every 1 years
Landslide Very Low roughly once every 26 years
Hurricane Very Low roughly once every 170 years
Wildfire Very Low roughly once every 24,753 years

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

Disaster Types

Snowstorm 5
Biological 2
Flood 2
Hurricane 1
Tornado 1

What Snowstorm declarations mean here

Snowstorm is the most frequent declaration type on Boone County's record, 45% of its declarations. Snow-related declarations work on a narrower basis than most other hazards: they are generally issued to reimburse the cost of snow removal and emergency protective measures, rather than to repair destroyed property.

The qualifying test is unusual too. FEMA assesses snowfall against record levels for the affected area, so the same storm total can qualify in a county where it is historically extreme and not qualify a few hundred miles north where it is an ordinary winter. A low snowstorm declaration count is therefore not evidence of mild winters.

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).

Emergency - 6 54.5%

of all 11 declarations

Major Disaster - 5 45.5%

of all 11 declarations

FEMA Declarations Timeline

Year Declarations
2020 2
2011 1
2008 1
2007 1
2005 1
2001 1
1993 1
1979 1
1973 1
1967 1

Disaster Declarations

How the 11 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 11 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4489 COVID-19 PANDEMIC DR Biological 2020-03-26
3435 COVID-19 EM Biological 2020-03-13
1960 SEVERE WINTER STORM AND SNOWSTORM DR Snowstorm 2011-03-17
3283 RECORD SNOW AND NEAR RECORD SNOW EM Snowstorm 2008-03-13
3269 SNOW EM Snowstorm 2006-12-29
3230 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-07
3161 ILLINOIS WINTER SNOW STORMS EM Snowstorm 2001-01-17
997 SEVERE STORMS & FLOODING DR Flood 1993-07-09
3068 BLIZZARDS & SNOWSTORMS EM Snowstorm 1979-01-16
373 SEVERE STORMS & FLOODING DR Flood 1973-04-26
227 TORNADOES DR Tornado 1967-04-25

Storm Events in Illinois

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 7,218 9 67 $46.0M
Hail 3,195 0 0 $27.1M
Winter Weather 1,363 14 49 $1.8M
Flood 1,221 14 11 $84.3M
Flash Flood 1,133 11 3 $1.1B

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

NFIP Flood Insurance Claims

Total Claims

46

Total Paid

$271.3K

Avg Per Claim

$5.9K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 57.3/100

Expected Annual Loss

Relatively Low

$21.4M/year

Social Vulnerability

Relatively Low

Community Resilience

Relatively High

Hazard Risk Breakdown

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

Hail is among the most expensive hazards in the model relative to how little it threatens life. It concentrates on roofs, vehicles and crops, and a single severe storm can generate an insurance loss across a metropolitan area without a single injury.

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

Boone County's closest FEMA peer: Loving County, TX

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

Further reading for this county

Most disaster-prone counties

With 11 FEMA declarations, Boone County sits in the high-volume declaration band - see how that count ranks against other U.S. counties.

More PlainHazard guides

Frequently Asked Questions

What is the most common disaster type in Boone County?
The most common disaster type in Boone County is Snowstorm, with 5 declarations. Other disaster types include Biological (2), Flood (2), Hurricane (1).
How does Boone County's FEMA declaration record compare with the Illinois average?
The typical Illinois county has 12.9 FEMA declaration records; Boone County has 11, or 14% fewer. Against the national county mean of 20.7, this county's total is 47% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Boone County received?
Boone County has received 5 major disaster declarations, representing 45% of all 11 disaster declarations.
How many flood insurance claims has Boone County filed?
Boone County has 46 National Flood Insurance Program (NFIP) claims totaling $271.3K in payments, with an average of $5.9K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Boone County?
No. In Boone County, Hail has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $11.3M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Boone County?
The most active year for disaster declarations in Boone County was 2020, with 2 declarations. The county has FEMA disaster data spanning 1967 to 2020.
What is the FEMA National Risk Index score for Boone County?
According to the FEMA National Risk Index, Boone County, Illinois has an overall risk score of 57.3 out of 100 (Relatively Low). Social vulnerability here rates Relatively Low, while community resilience comes in at Relatively High. The Expected Annual Loss (EAL) score is Relatively Low, representing $21.4M in annualized losses.
Which natural hazard poses the greatest risk to Boone County?
The top hazard flagged by FEMA's NRI for Boone County is Hail (risk rating: Relatively Moderate). Other significant hazards include Tornado (Relatively Moderate) and Cold Wave (Relatively Moderate). FEMA's modeled event frequency puts hail here at an average of 4.7 times per year, drawn from 177 historical events on record. 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.

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 Boone County

Against a Illinois county mean of 13 declarations, Boone County, IL records 11, or 14% fewer. PlainHazard classifies that historical total as high activity.

  • Emergency is the largest group (6 of 11) in a declaration history that remains below its state benchmark; frequency here is not a forecast. Illinois overview
  • Nationally the county exceeds 12% of recorded county totals, but its own Illinois 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.