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Iowa · FEMA + NOAA + National Risk Index

Winnebago County, IA

16 FEMA disaster declarations (1965-2024), with a FEMA National Risk Index rating of Very Low. Most common hazard: Severe Storm.

16
FEMA declarations
13
Major disasters
31
NRI risk · Very Low
Severe Storm
Top hazard

The verdict

Winnebago County has a nationally busy FEMA history: 16 declarations, more than 27% of counties in this registry. But the state comparison tempers that reading: the total is 17% below the Iowa county mean. FEMA's separate National Risk Index places the county safer than 31%; that score models loss and vulnerability rather than counting declarations.

Safer than 31%
of U.S. counties for FEMA National Risk Index score
Very Low
FEMA National Risk Index rating
16
FEMA declarations vs 21 national county avg
2
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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FEMA OpenFEMA declaration desk

County FIPS 19189 · Winnebago County 16 declarations · rank 2347/3,266

DECL-MID · MAJOR-HEAVY · RANK-LOWER · PHOTO-FINISH · NRI-LOW · ACT-HIGH · TYPE-LEAD · VS-ST-BELOW

  • DECL-MID 16
  • MAJOR-HEAVY 81%
  • RANK-LOWER #2,347
  • PHOTO-FINISH Greene
  • NRI-LOW Very Low
  • ACT-HIGH High
  • TYPE-LEAD Severe Storm
  • VS-ST-BELOW -17%

Nearest declaration peer: Greene, GA (0 declaration gap)

FEMA Disaster Declarations Summaries v2 filing stamps for this county register. Read with this county → · Iowa state profile

Winnebago County among counties with fewer federal records

FEMA declaration records among Winnebago County and nearest peers by total count

declarations

What this shows Winnebago County carries 16 FEMA declaration records, ranked 2347 of 3,266 counties in this registry.

Source FEMA OpenFEMA Disaster Declarations Summaries v2 As of 2026-08-25

Winnebago County versus quieter counties in this dataset

Winnebago County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Winnebago County

16 27th percentile higher than 27% 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 · 2026-08-25

Winnebago County's FEMA Risk Index score

0/100100/100Iowa avg40/10030.7/100
FEMA National Risk Index composite score vs. the Iowa county average

What does Winnebago County's hazard record show?

FEMA National Risk Index

FEMA's data shows an elevated National Risk Index composite of 30.7/100 for this county (Very Low rating). Expected Annual Loss comes in at Very Low (roughly $9.6M in annualized losses). Social vulnerability (Relatively Moderate) and community resilience (Very High) both factor into how that raw exposure plays out on the ground. 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 14 modeled event-days per year here, based on 357 historical events on record.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 2 claims and $186 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 Iowa county averages 19.3 federal declaration records, while Winnebago County has 16. The gap is 17% 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.

57 /100

Historical Activity Index

High historical activity

Winnebago County, IA · 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
12/30

16 OpenFEMA declarations, full ingest window (0.8x national county average)

County Disaster Density Moderate
10/25

16 declarations (0.8x state county average of 19)

Major Disaster Share Very High
20/25

13 of 16 declarations are major disasters (81%)

Hazard Diversity Very High
15/20

6 different disaster types declared in Winnebago County

FEMA NRI 8-hazard radar - Winnebago County

Winnebago County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 8, Hurricane 0, Tornado 25, Wildfire 8, Drought 70, Heat Wave 8, Winter Storm 48. The simple mean of these eight displayed scores is 22 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 22 8-hazard mean
Winnebago County NRI risk profile FIPS 19189 · displayed-hazard mean 22/100
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

16

Below median

Major Disaster share

81%

Mostly major

NRI risk score

31

Very Low

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

How often does each hazard strike Winnebago 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 14 modeled event-days per year
Cold Wave Relatively Moderate an average of 11 times per year
Winter Weather Relatively Moderate an average of 20 times per year
Hail Relatively Low an average of 4.4 times per year
Tornado Relatively Low roughly once every 3 years
Strong Wind Relatively Low an average of 3.7 times per year
Landslide Very Low roughly once every 20 years
Riverine Flooding Very Low an average of 1.2 times per year
Ice Storm Very Low roughly once every 2 years
Lightning Very Low an average of 40 times per year
Wildfire Very Low roughly once every 9,593 years
Earthquake Very Low roughly once every 2,451 years
Heat Wave Very Low 3.5 modeled event-days per year

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

Disaster Types

Severe Storm 6
Flood 5
Biological 2
Snowstorm 1
Hurricane 1
Severe Ice Storm 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Winnebago 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 - 13 81.3%

of all 16 declarations

Emergency - 3 18.8%

of all 16 declarations

FEMA Declarations Timeline

Year Declarations
2024 1
2020 2
2019 1
2018 1
2014 1
2013 1
2008 1
2007 2
2005 1
2004 1
1998 1
1993 1
1992 1
1965 1

Disaster Declarations

How the 16 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 16 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4796 SEVERE STORMS, FLOODING, STRAIGHT-LINE WINDS, AND TORNADOES DR Severe Storm 2024-06-24
4483 COVID-19 PANDEMIC DR Biological 2020-03-23
3480 COVID-19 EM Biological 2020-03-13
4421 SEVERE STORMS AND FLOODING DR Flood 2019-03-23
4386 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING DR Severe Storm 2018-08-20
4184 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING DR Flood 2014-07-24
4126 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2013-07-02
1763 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2008-05-27
3275 SNOW EM Snowstorm 2007-03-30
1688 SEVERE WINTER STORMS DR Severe Storm 2007-03-14
3239 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-10
1518 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2004-05-25
1230 SEVERE STORMS, TORNADOES AND FLOODING DR Flood 1998-07-02
996 SEVERE STORMS & FLOODING DR Flood 1993-07-09
928 ICE STORM DR Severe Ice Storm 1991-12-26
193 FLOODING DR Flood 1965-04-22

Storm Events in Iowa

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 4,928 6 227 $40.5M
Hail 3,736 0 0 $4.3M
Heavy Rain 2,394 0 0 $292.0K
Drought 1,556 0 0 $0
Winter Storm 1,543 3 4 $2.8M

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

NFIP Flood Insurance Claims

Total Claims

2

Total Paid

$186

Avg Per Claim

$93

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 30.7/100

Expected Annual Loss

Very Low

$9.6M/year

Social Vulnerability

Relatively Moderate

Community Resilience

Very High

Hazard Risk Breakdown

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

Winnebago County's closest FEMA peer: Dakota County, NE

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Winnebago County: nearest out-of-state National Risk Index composite and nearest FEMA declaration count (floor ≥5 records). Record similarity only, not a forecast of the next hazard.

Further reading for this county

Most disaster-prone counties

With 16 FEMA declarations, Winnebago 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 Winnebago County?
The most common disaster type in Winnebago County is Severe Storm, with 6 declarations. Other disaster types include Flood (5), Biological (2), Snowstorm (1).
How does Winnebago County's FEMA declaration record compare with the Iowa average?
The typical Iowa county has 19.3 FEMA declaration records; Winnebago County has 16, or 17% fewer. Against the national county mean of 20.7, this county's total is 23% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Winnebago County received?
Winnebago County has received 13 major disaster declarations, representing 81% of all 16 disaster declarations.
How many flood insurance claims has Winnebago County filed?
Winnebago County has 2 National Flood Insurance Program (NFIP) claims totaling $186 in payments, with an average of $93 per claim.
What was the worst year for disasters in Winnebago County?
The most active year for disaster declarations in Winnebago County was 2007, with 2 declarations. The county has FEMA disaster data spanning 1965 to 2024.
What is the FEMA National Risk Index score for Winnebago County?
According to the FEMA National Risk Index, Winnebago County, Iowa has an overall risk score of 30.7 out of 100 (Very Low). On social vulnerability the county rates Relatively Moderate; on community resilience, Very High. The Expected Annual Loss (EAL) score is Very Low, representing $9.6M in annualized losses.
Which natural hazard poses the greatest risk to Winnebago County?
Based on FEMA NRI data, the highest-risk natural hazard in Winnebago County is Drought (risk rating: Relatively High). Other significant hazards include Cold Wave (Relatively Moderate) and Winter Weather (Relatively Moderate). FEMA's modeled event frequency puts drought here at 14 modeled event-days per year, drawn from 357 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.

FEMA OpenFEMA declarations + NRI for Winnebago County · vintage 2026-08-25 · Methodology · Iowa profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events