FEMA Records
26
High volume
Missouri · FEMA + NOAA + National Risk Index
Lewis County, MO
26 FEMA disaster declarations (1965-2020), with a FEMA National Risk Index rating of Very Low. Most common hazard: Severe Storm.
- 26
- FEMA declarations
- 19
- Major disasters
- 27
- NRI risk · Very Low
- Severe Storm
- Top hazard
The verdict
Two federal records point in the busier direction for Lewis County. Its 26 FEMA declarations are 6% above the Missouri county mean and exceed the count for 75% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it safer than 27%, based on modeled expected annual loss, social vulnerability, and community resilience.
- Safer than 27%
- of U.S. counties for FEMA National Risk Index score
- Very Low
- FEMA National Risk Index rating
- 26
- FEMA declarations vs 21 national county avg
- 143
- 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 Lewis County compare?
Lewis County vs. all counties in this dataset
FEMA disaster declarations, all-time
26 Top 25% higher than 75% 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
Lewis 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 Lewis County is led by Riverine Flooding (about $3.9M Expected Annual Loss, Historical Loss Ratio Very High), while Heat Wave 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 Lewis County's hazard record show?
Reading the federal records together
The NFIP claims register shows a middle-volume loss record here: 143 paid claims, totaling $3.5M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $24.6K average describes payments on recorded claims only, leaving uninsured damage and properties without a claim outside the measure.
The declaration register points in the busier direction. Lewis County's 26 federal records stand 6% above the Missouri county mean of 24.6. That comparison describes how often federal action was recorded, including any Major Disaster, Emergency, and Fire Management entries shown on this page; it does not convert the count into future probability.
Declaration frequency
The FEMA register is busy by both local and national comparisons. It contains 26 entries for Lewis County, including 19 Major Disaster records, 6% above the Missouri county mean. Across the 55-year span, that works out to 0.5 declarations a year. Severe Storm leads the file with 15 entries. Declaration type records the federal action taken, not every assistance program approved.
FEMA National Risk Index
This county's FEMA National Risk Index composite lands at 27.4/100 (Very Low), a modest reading against the rest of the country. Expected Annual Loss is rated Very Low (roughly $8.1M in annualized losses), tempered or compounded by a Relatively Moderate social-vulnerability score and Relatively Low community-resilience score. Among the 18 modeled hazards, Heat Wave carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at 8.4 modeled event-days per year here, based on 128 historical events on record.
63 /100
Historical Activity Index
High historical activity
Lewis 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) High
19/30
26 OpenFEMA declarations, full ingest window (1.3x national county average)
County Disaster Density High
13/25
26 declarations (1.1x state county average of 25)
Major Disaster Share High
18/25
19 of 26 declarations are major disasters (73%)
Hazard Diversity High
13/20
5 different disaster types declared in Lewis County
Historical Declaration Activity
Activity Band
High
vs. Missouri Avg
+6%
State avg: 24.6
vs. National Avg
+25%
National avg: 20.7
Avg Per Year
0.5
Over 55 years
FEMA NRI 8-hazard radar - Lewis 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
73%
Major-heavy
NRI risk score
27
Very Low
Source: FEMA National Risk Index Per-county per-hazard ratings, December 2025 release
How often does each hazard strike Lewis 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 |
|---|---|---|
| Heat Wave | Relatively Moderate | 8.4 modeled event-days per year |
| Landslide | Relatively Low | roughly once every 5 years |
| Drought | Relatively Low | 6.7 modeled event-days per year |
| Hail | Relatively Low | an average of 3.4 times per year |
| Strong Wind | Relatively Moderate | an average of 4 times per year |
| Lightning | Relatively Low | an average of 47 times per year |
| Earthquake | Very Low | roughly once every 628 years |
| Riverine Flooding | Relatively Low | an average of 1.5 times per year |
| Wildfire | Very Low | roughly once every 1,506 years |
| Cold Wave | Relatively Low | an average of 4.4 times per year |
| Tornado | Relatively Low | roughly once every 3 years |
| Winter Weather | Very Low | an average of 10 times per year |
| Ice Storm | Very Low | roughly once every 1 years |
| Hurricane | Very Low | roughly once every 100 years |
Source: FEMA National Risk Index Modeled annualized frequency; drought and heat wave use event-days/year, December 2025 release
Disaster Types
Severe Storm 15
Flood 5
Severe Ice Storm 3
Biological 2
Hurricane 1
What Severe Storm declarations mean here
Severe Storm is the most frequent declaration type on Lewis County's record, 58% 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 - 19 73.1%
of all 26 declarations
Emergency - 7 26.9%
of all 26 declarations
FEMA Declarations Timeline
| Year | Declarations | |
|---|---|---|
| 2020 | 2 | |
| 2019 | 1 | |
| 2016 | 1 | |
| 2015 | 2 | |
| 2013 | 1 | |
| 2011 | 3 | |
| 2010 | 1 | |
| 2009 | 3 | |
| 2008 | 2 | |
| 2005 | 1 | |
| 2003 | 1 | |
| 2002 | 2 | |
| 1995 | 1 | |
| 1993 | 1 | |
| 1987 | 1 | |
Show 3 earlier declaration years
| 1974 | 1 | |
| 1973 | 1 | |
| 1965 | 1 | |
Disaster Declarations
How the 26 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.
Download these 26 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 |
| 3374 | SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING | EM | Flood | 2016-01-02 |
| 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 |
| 4130 | SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING | DR | Severe Storm | 2013-07-18 |
| 3325 | FLOODING | EM | Flood | 2011-06-30 |
| 1961 | SEVERE WINTER STORM AND SNOWSTORM | DR | Severe Storm | 2011-03-23 |
| 3317 | SEVERE WINTER STORM | EM | Severe Storm | 2011-02-03 |
| 1934 | SEVERE STORMS, FLOODING, AND TORNADOES | DR | Severe Storm | 2010-08-17 |
| 1847 | SEVERE STORMS, TORNADOES, AND FLOODING | DR | Severe Storm | 2009-06-19 |
| 3303 | SEVERE WINTER STORM | EM | Severe Ice Storm | 2009-01-30 |
| 1809 | SEVERE STORMS, FLOODING, AND A TORNADO | DR | Severe Storm | 2008-11-13 |
| 1773 | SEVERE STORMS AND FLOODING | DR | Severe Storm | 2008-06-25 |
| 3281 | SEVERE WINTER STORMS | EM | Severe Ice Storm | 2007-12-12 |
| 3232 | HURRICANE KATRINA EVACUATION | EM | Hurricane | 2005-09-10 |
| 1463 | SEVERE STORMS, TORNADOES, AND FLOODING | DR | Severe Storm | 2003-05-06 |
| 1412 | SEVERE STORMS, TORNADOES AND FLOODING | DR | Severe Storm | 2002-05-06 |
| 1403 | SEVERE WINTER ICE STORM | DR | Severe Ice Storm | 2002-02-06 |
Show 6 earlier declaration records
| DR# | Title | Type | Incident | Date |
|---|---|---|---|---|
| 1054 | SEVERE STORMS, TORNADOES, HAIL, FLOODING | DR | Severe Storm | 1995-06-02 |
| 995 | SEVERE STORMS & FLOODING | DR | Flood | 1993-07-09 |
| 779 | SEVERE STORMS & FLOODING | DR | Flood | 1986-10-14 |
| 407 | SEVERE STORMS & FLOODING | DR | Flood | 1973-11-01 |
| 372 | HEAVY RAINS, TORNADOES & FLOODING | DR | Severe Storm | 1973-04-19 |
| 198 | FLOODING | DR | Severe Storm | 1965-06-14 |
Storm Events in Missouri
Statewide NOAA context only. PlainHazard does not currently attribute these state totals to Lewis 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
143
Total Paid
$3.5M
Avg Per Claim
$24.6K
Source: FEMA National Flood Insurance Program (NFIP) OpenFEMA Claims Data
FEMA National Risk Index
Overall Risk
Very Low
Score: 27.4/100
Expected Annual Loss
Very Low
$8.1M/year
Social Vulnerability
Relatively Moderate
Community Resilience
Relatively Low
Hazard Risk Breakdown
Heat Wave Relatively Moderate
Landslide Relatively Low
Drought Relatively Low
Hail Relatively Low
Strong Wind Relatively Moderate
Lightning Relatively Low
Earthquake Very Low
Riverine Flooding Relatively Low
Wildfire Very Low
Cold Wave Relatively Low
Tornado Relatively Low
Winter Weather 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: Heat Wave
Heat Wave is measured in event-days per year rather than discrete events, and it is the hazard whose harm is most consistently undercounted: its toll is health and mortality, concentrated among people without cooling, rather than visible damage to property.
Worth noting for Lewis County: the model and the federal record do NOT point at the same hazard. Heat 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
Lewis County's closest FEMA peer: Greene County, VA
Comparisons use published FEMA declaration fields plus the National Risk Index composite for Lewis County. Record similarity, not a safety rating.
Closest declaration profiles
Lewis County shows 26 FEMA declarations, led by Severe Storm.
Similar Major-disaster share
Lewis County: 19 of 26 of its declarations are Major.
Similar modeled NRI score
Lewis County: NRI composite 27.4 (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 Lewis County - capture-dated entries only.
Further reading for this county
Understanding disaster data
Lewis County's NFIP claims file (143 claims) and FEMA declaration history measure different federal records - this guide separates them from modeled NRI risk.
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 Lewis County?
The most common disaster type in Lewis County is Severe Storm, with 15 declarations. Other disaster types include Flood (5), Severe Ice Storm (3), Biological (2).
How does Lewis County's FEMA declaration record compare with the Missouri average?
FEMA lists 26 declaration records for Lewis County. That is 6% above the Missouri county mean of 24.6. Its count is also 25% above the national county mean of 20.7. A larger declaration history records more federal actions; it is not a forecast of the county's next hazard.
How many major FEMA disaster declarations has Lewis County received?
Lewis County has received 19 major disaster declarations, representing 73% of all 26 disaster declarations.
How many flood insurance claims has Lewis County filed?
Lewis County has 143 National Flood Insurance Program (NFIP) claims totaling $3.5M in payments, with an average of $24.6K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Lewis County?
No. In Lewis County, Heat Wave has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $3.9M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Lewis County?
The most active year for disaster declarations in Lewis County was 2009, with 3 declarations. The county has FEMA disaster data spanning 1965 to 2020.
What is the FEMA National Risk Index score for Lewis County?
According to the FEMA National Risk Index, Lewis County, Missouri has an overall risk score of 27.4 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 $8.1M in annualized losses.
Which natural hazard poses the greatest risk to Lewis County?
Based on FEMA NRI data, the highest-risk natural hazard in Lewis County as of the latest release is Heat Wave (risk rating: Relatively Moderate). Other significant hazards include Landslide (Relatively Low) and Drought (Relatively Low). FEMA's modeled event frequency puts heat wave here at 8.4 modeled event-days per year, drawn from 128 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 Lewis County
Lewis County, MO has 26 federal declaration records, 6% more than the Missouri county mean of 25; its history sits in PlainHazard's high activity band.
- Within this above-state-average declaration file, major disaster leads with 19 of 26 records; the category describes past federal action, not the next likely hazard. Missouri overview
- The state benchmark and national rank point the same way: this count tops the Missouri mean and the totals for 75% of 3,266 U.S. counties. Most-disaster rankings
- Use the data guide to separate this mid-volume insurance-claims file from declaration counts and modeled NRI risk. Disaster-data guide
An above-average declaration count records past federal responses; it does not predict the next event. Current warnings come from the National Weather Service and local emergency officials.
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.