FEMA Records
18
Below median
Missouri · FEMA + NOAA + National Risk Index
Harrison County, MO
18 FEMA disaster declarations (1973-2020), with a FEMA National Risk Index rating of Very Low. Most common hazard: Severe Storm.
- 18
- FEMA declarations
- 12
- Major disasters
- 29
- NRI risk · Very Low
- Severe Storm
- Top hazard
The verdict
Harrison County has a nationally busy FEMA history: 18 declarations, more than 37% of counties in this registry. But the state comparison tempers that reading: the total is 27% below the Missouri county mean. FEMA's separate National Risk Index places the county safer than 29%; that score models loss and vulnerability rather than counting declarations.
- Safer than 29%
- of U.S. counties for FEMA National Risk Index score
- Very Low
- FEMA National Risk Index rating
- 18
- FEMA declarations vs 21 national county avg
- 6
- 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.
How does Harrison County compare?
Harrison County vs. all counties in this dataset
FEMA disaster declarations, all-time
18 37th percentile higher than 37% of 3,266 counties
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
Harrison County's FEMA Risk Index score
FEMA National Risk Index composite score vs. the Missouri county average
Which hazard drives modeled loss here?
FEMA's modeled annual dollar loss for Harrison County is led by Riverine Flooding (about $2.5M Expected Annual Loss, Historical Loss Ratio Relatively High), while Drought carries the highest National Risk Index rating (Relatively High). 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 Harrison County's hazard record show?
Declaration frequency
Nationally, Harrison County's 18 FEMA records form a high-volume history; within Missouri, however, the count is 27% below the county mean. 12 entries carry the Major Disaster classification. The largest incident group is Severe Storm, appearing 9 times. The full 47-year record averages 0.4 declarations annually. A DR label alone does not say whether Individual Assistance, Public Assistance, or both followed.
FEMA National Risk Index
This county's FEMA National Risk Index composite lands at 29.3/100 (Very Low), a modest reading against the rest of the country. Expected Annual Loss is rated Very Low (roughly $7.2M in annualized losses), tempered or compounded by a Relatively High social-vulnerability score and Relatively Moderate community-resilience score. Of the 18 hazards FEMA models, Drought stands out as the sharpest exposure here, rated Relatively High. FEMA's modeled frequency puts that hazard at 17 modeled event-days per year here, based on 462 historical events on record.
Reading the federal records together
This county has a small entry in FEMA's NFIP paid-claims table: 6 claims and $156.7K 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 Missouri county averages 24.6 federal declaration records, while Harrison County has 18. 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.
54 /100
Historical Activity Index
High historical activity
Harrison County, MO · 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
13/30
18 OpenFEMA declarations, full ingest window (0.9x national county average)
County Disaster Density Moderate
9/25
18 declarations (0.7x state county average of 25)
Major Disaster Share High
17/25
12 of 18 declarations are major disasters (67%)
Hazard Diversity Very High
15/20
6 different disaster types declared in Harrison County
Historical Declaration Activity
Activity Band
High
vs. Missouri Avg
-27%
State avg: 24.6
vs. National Avg
-13%
National avg: 20.7
Avg Per Year
0.4
Over 47 years
FEMA NRI 8-hazard radar - Harrison County
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.
Major Disaster share
67%
Major-heavy
NRI risk score
29
Very Low
Source: FEMA National Risk Index Per-county per-hazard ratings, December 2025 release
How often does each hazard strike Harrison 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 |
|---|---|---|
| Drought | Relatively High | 17 modeled event-days per year |
| Landslide | Relatively Low | roughly once every 3 years |
| Heat Wave | Relatively Low | 8.8 modeled event-days per year |
| Wildfire | Very Low | roughly once every 831 years |
| Tornado | Relatively Low | roughly once every 2 years |
| Hail | Relatively Low | an average of 4.7 times per year |
| Cold Wave | Relatively Low | an average of 4.7 times per year |
| Strong Wind | Relatively Low | an average of 3.5 times per year |
| Winter Weather | Relatively Low | an average of 12 times per year |
| Riverine Flooding | Very Low | roughly once every 2 years |
| Earthquake | Very Low | roughly once every 1,126 years |
| Lightning | Very Low | an average of 47 times per year |
| Ice Storm | Very Low | roughly once every 3 years |
| Hurricane | Very Low | roughly once every 162 years |
Source: FEMA National Risk Index Modeled annualized frequency; drought and heat wave use event-days/year, December 2025 release
Disaster Types
Severe Storm 9
Severe Ice Storm 3
Biological 2
Flood 2
Hurricane 1
Drought 1
What Severe Storm declarations mean here
Severe Storm is the most frequent declaration type on Harrison County's record, 50% 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 - 12 66.7%
of all 18 declarations
Emergency - 6 33.3%
of all 18 declarations
FEMA Declarations Timeline
| Year | Declarations | |
|---|---|---|
| 2020 | 2 | |
| 2019 | 1 | |
| 2015 | 2 | |
| 2011 | 1 | |
| 2010 | 1 | |
| 2009 | 1 | |
| 2008 | 3 | |
| 2007 | 1 | |
| 2005 | 1 | |
| 2004 | 1 | |
| 1993 | 1 | |
| 1976 | 1 | |
| 1974 | 1 | |
| 1973 | 1 | |
Disaster Declarations
How the 18 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.
Download these 18 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.
| DR# | Title | Type | Incident | Date |
|---|---|---|---|---|
| 4490 | COVID-19 PANDEMIC | DR | Biological | 2020-03-26 |
| 3482 | COVID-19 | EM | Biological | 2020-03-13 |
| 4451 | SEVERE STORMS, TORNADOES, AND FLOODING | DR | Severe Storm | 2019-07-09 |
| 4238 | SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING | DR | Severe Storm | 2015-08-07 |
| 4200 | SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING | DR | Severe Storm | 2014-10-31 |
| 3317 | SEVERE WINTER STORM | EM | Severe Storm | 2011-02-03 |
| 1934 | SEVERE STORMS, FLOODING, AND TORNADOES | DR | Severe Storm | 2010-08-17 |
| 3303 | SEVERE WINTER STORM | EM | Severe Ice Storm | 2009-01-30 |
| 1773 | SEVERE STORMS AND FLOODING | DR | Severe Storm | 2008-06-25 |
| 1736 | SEVERE WINTER STORMS | DR | Severe Ice Storm | 2007-12-27 |
| 3281 | SEVERE WINTER STORMS | EM | Severe Ice Storm | 2007-12-12 |
| 1708 | SEVERE STORMS AND FLOODING | DR | Severe Storm | 2007-06-11 |
| 3232 | HURRICANE KATRINA EVACUATION | EM | Hurricane | 2005-09-10 |
| 1524 | SEVERE STORMS, TORNADOES, AND FLOODING | DR | Severe Storm | 2004-06-11 |
| 995 | SEVERE STORMS & FLOODING | DR | Flood | 1993-07-09 |
| 3017 | DROUGHT | EM | Drought | 1976-09-24 |
| 407 | SEVERE STORMS & FLOODING | DR | Flood | 1973-11-01 |
| 372 | HEAVY RAINS, TORNADOES & FLOODING | DR | Severe Storm | 1973-04-19 |
Storm Events in Missouri
Statewide NOAA context only. PlainHazard does not currently attribute these state totals to Harrison County.
| Storm Type | Events | Fatalities | Injuries | Property Damage |
|---|---|---|---|---|
| Thunderstorm Wind | 6,391 | 30 | 52 | $63.4M |
| Hail | 4,411 | 0 | 1 | $86.1M |
| Flash Flood | 2,399 | 47 | 14 | $406.6M |
| Flood | 1,810 | 25 | 7 | $304.6M |
| Drought | 1,033 | 0 | 350 | $53.6M |
Source: NOAA Storm Events Database State-level aggregated data, 2015-2025
NFIP Flood Insurance Claims
Total Claims
6
Total Paid
$156.7K
Avg Per Claim
$26.1K
Source: FEMA National Flood Insurance Program (NFIP) OpenFEMA Claims Data
FEMA National Risk Index
Overall Risk
Very Low
Score: 29.3/100
Expected Annual Loss
Very Low
$7.2M/year
Social Vulnerability
Relatively High
Community Resilience
Relatively Moderate
Hazard Risk Breakdown
Drought Relatively High
Landslide Relatively Low
Heat Wave Relatively Low
Wildfire Very Low
Tornado Relatively Low
Hail Relatively Low
Cold Wave Relatively Low
Strong Wind Relatively Low
Winter Weather Relatively Low
Riverine Flooding Very Low
Earthquake Very Low
Lightning Very Low
Ice Storm Very Low
Hurricane 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: Drought
Drought is the slowest of the modeled hazards and the least visible: it does its damage to agriculture, water supply and soil over seasons rather than hours, so it rarely produces the kind of single-day damage that drives a disaster declaration. FEMA scores it in event-days per year rather than discrete events for exactly that reason.
Worth noting for Harrison County: the model and the federal record do NOT point at the same hazard. Drought carries the highest modeled rating (Relatively High), 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
Harrison County's closest FEMA peer: Blair County, PA
Comparisons use published FEMA declaration fields plus the National Risk Index composite for Harrison County. Record similarity, not a safety rating.
Closest declaration profiles
Harrison County shows 18 FEMA declarations, led by Severe Storm.
Similar Major-disaster share
Harrison County: 12 of 18 of its declarations are Major.
Similar modeled NRI score
Harrison County: NRI composite 29.3 (Very Low).
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 Harrison County - capture-dated entries only.
Further reading for this county
Most disaster-prone counties
With 18 FEMA declarations, Harrison County sits in the high-volume declaration band - see how that count ranks against other U.S. counties.
More PlainHazard guides
- Most disaster-prone counties - U.S. counties ranked by FEMA declaration totals.
- Understanding disaster data - declarations vs storm events vs NRI scores.
- Preparing for natural disasters - household checklist (not county-specific advice).
Related
Frequently Asked Questions
What is the most common disaster type in Harrison County?
The most common disaster type in Harrison County is Severe Storm, with 9 declarations. Other disaster types include Severe Ice Storm (3), Biological (2), Flood (2).
How does Harrison County's FEMA declaration record compare with the Missouri average?
The typical Missouri county has 24.6 FEMA declaration records; Harrison County has 18, or 27% fewer. Against the national county mean of 20.7, this county's total is 13% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Harrison County received?
Harrison County has received 12 major disaster declarations, representing 67% of all 18 disaster declarations.
How many flood insurance claims has Harrison County filed?
Harrison County has 6 National Flood Insurance Program (NFIP) claims totaling $156.7K in payments, with an average of $26.1K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Harrison County?
No. In Harrison County, Drought has the highest National Risk Index rating (Relatively High), while Riverine Flooding leads Expected Annual Loss at about $2.5M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Harrison County?
The most active year for disaster declarations in Harrison County was 2008, with 3 declarations. The county has FEMA disaster data spanning 1973 to 2020.
What is the FEMA National Risk Index score for Harrison County?
According to the FEMA National Risk Index, Harrison County, Missouri has an overall risk score of 29.3 out of 100 (Very Low). On social vulnerability the county rates Relatively High; on community resilience, Relatively Moderate. The Expected Annual Loss (EAL) score is Very Low, representing $7.2M in annualized losses.
Which natural hazard poses the greatest risk to Harrison County?
The top hazard flagged by FEMA's NRI for Harrison County as of the latest release is Drought (risk rating: Relatively High). Other significant hazards include Landslide (Relatively Low) and Heat Wave (Relatively Low). FEMA's modeled event frequency puts drought here at 17 modeled event-days per year, drawn from 462 historical events on record. The underlying methodology weighs historical event frequency against 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 Harrison County
Against a Missouri county mean of 25 declarations, Harrison County, MO records 18, or 27% fewer. PlainHazard classifies that historical total as high activity.
- Major Disaster is the largest group (12 of 18) in a declaration history that remains below its state benchmark; frequency here is not a forecast. Missouri overview
- Nationally the county exceeds 37% of recorded county totals, but its own Missouri 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.
PlainHazard derives this profile from FEMA's Disaster Declarations Summaries and National Risk Index data. The declaration comparison covers 3,266 U.S. counties and county equivalents in this database, refreshed as of 2026-08-03. Read our methodology - how this data is sourced, computed, and verified.
All federal data sources used on this page
- FEMA OpenFEMA, Disaster Declarations Summaries v2 - all federally-declared disasters for this county. fema.gov/openfema/disaster-declarations
- FEMA National Risk Index (NRI) - per-county per-hazard risk ratings and expected annual loss. hazards.fema.gov/nri
- NOAA NCEI Storm Events Database - state-level storm/severe-weather event records, 2015-2025. ncdc.noaa.gov/stormevents
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.