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Wisconsin · FEMA + NOAA + National Risk Index

Iowa County, WI

17 FEMA disaster declarations (1976-2026), with a FEMA National Risk Index rating of Very Low. Most common hazard: Severe Storm.

17
FEMA declarations
14
Major disasters
23
NRI risk · Very Low
Severe Storm
Top hazard

The verdict

Two federal records point in the busier direction for Iowa County. Its 17 FEMA declarations are 38% above the Wisconsin county mean and exceed the count for 32% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it safer than 23%, based on modeled expected annual loss, social vulnerability, and community resilience.

Safer than 23%
of U.S. counties for FEMA National Risk Index score
Very Low
FEMA National Risk Index rating
17
FEMA declarations vs 21 national county avg
25
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 55049 · Iowa County 17 declarations · rank 2144/3,266

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

  • DECL-MID 17
  • MAJOR-HEAVY 82%
  • RANK-LOWER #2,144
  • PHOTO-FINISH Curry
  • NRI-LOW Very Low
  • ACT-HIGH High
  • TYPE-LEAD Severe Storm
  • VS-ST-ABOVE +38%

Nearest declaration peer: Curry, OR (0 declaration gap)

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

Iowa County among counties with fewer federal records

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

declarations

What this shows Iowa County carries 17 FEMA declaration records, ranked 2144 of 3,266 counties in this registry.

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

Iowa County versus quieter counties in this dataset

Iowa County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Iowa County

17 32nd percentile higher than 32% 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

Iowa County's FEMA Risk Index score

0/100100/100Wisconsin avg59/10023.4/100
FEMA National Risk Index composite score vs. the Wisconsin county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Iowa County is led by Riverine Flooding (about $4.9M Expected Annual Loss, Historical Loss Ratio Relatively High), 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 Iowa County's hazard record show?

FEMA National Risk Index

This county's FEMA National Risk Index composite lands at 23.4/100 (Very Low), a modest reading against the rest of the country. Expected Annual Loss is rated Very Low (roughly $10.8M in annualized losses), tempered or compounded by a Very Low social-vulnerability score and Very High community-resilience score. 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 roughly once every 1 years here.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 25 claims and $215.7K 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.

The declaration register points in the busier direction. Iowa County's 17 federal records stand 38% above the Wisconsin county mean of 12.3. 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.

68 /100

Historical Activity Index

High historical activity

Iowa County, WI · 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

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

County Disaster Density High
17/25

17 declarations (1.4x state county average of 12)

Major Disaster Share Very High
21/25

14 of 17 declarations are major disasters (82%)

Hazard Diversity Very High
18/20

7 different disaster types declared in Iowa County

FEMA NRI 8-hazard radar - Iowa County

Iowa County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 8, Hurricane 8, Tornado 25, Wildfire 8, Drought 8, Heat Wave 25, Winter Storm 25. The simple mean of these eight displayed scores is 14 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 14 8-hazard mean
Iowa County NRI risk profile FIPS 55049 · displayed-hazard mean 14/100
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

17

Below median

Major Disaster share

82%

Mostly major

NRI risk score

23

Very Low

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

How often does each hazard strike Iowa 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 roughly once every 1 years
Hail Relatively Moderate an average of 3.5 times per year
Cold Wave Relatively Low an average of 5.8 times per year
Tornado Relatively Low roughly once every 2 years
Heat Wave Relatively Low 3.7 modeled event-days per year
Strong Wind Relatively Low an average of 4.2 times per year
Riverine Flooding Very Low roughly once every 1 years
Ice Storm Relatively Low roughly once every 2 years
Drought Very Low 5.2 modeled event-days per year
Winter Weather Very Low an average of 16 times per year
Wildfire Very Low roughly once every 5,861 years
Earthquake Very Low roughly once every 1,927 years
Lightning Very Low an average of 38 times per year
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
Flood 2
Biological 2
Snowstorm 1
Hurricane 1
Tornado 1
Drought 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Iowa County's record, 53% 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 - 14 82.4%

of all 17 declarations

Emergency - 3 17.6%

of all 17 declarations

FEMA Declarations Timeline

Year Declarations
2026 1
2020 2
2018 1
2013 1
2011 1
2008 1
2007 1
2005 1
2004 1
2000 1
1993 1
1990 1
1984 1
1978 1
1976 2

Disaster Declarations

How the 17 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 17 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4923 SEVERE STORMS, TORNADOES, AND FLOODING DR Flood 2026-06-30
4520 COVID-19 PANDEMIC DR Biological 2020-04-04
3454 COVID-19 EM Biological 2020-03-13
4343 SEVERE STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUD DR Severe Storm 2017-10-07
4141 SEVERE STORMS, FLOODING, AND MUDSLIDES DR Severe Storm 2013-08-08
1966 SEVERE WINTER STORM AND SNOWSTORM DR Snowstorm 2011-04-05
1768 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2008-06-14
1719 SEVERE STORMS AND FLOODING DR Severe Storm 2007-08-26
3249 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-13
1526 SEVERE STORMS AND FLOODING DR Severe Storm 2004-06-18
1332 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2000-06-24
994 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1993-07-02
874 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1990-07-13
710 SEVERE STORMS & TORNADOES DR Tornado 1984-06-12
559 SEVERE STORMS, FLOODING, HAIL & TORNADOES DR Severe Storm 1978-07-07
3014 DROUGHT EM Drought 1976-06-17
496 SEVERE STORMS, ICING, WIND & FLOODING DR Flood 1976-03-23

Storm Events in Wisconsin

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 3,504 5 23 $45.0M
Hail 2,620 0 0 $57.8M
Winter Weather 1,939 43 152 $2.1M
Winter Storm 1,338 15 86 $2.3M
Flood 740 12 4 $115.6M

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

NFIP Flood Insurance Claims

Total Claims

25

Total Paid

$215.7K

Avg Per Claim

$8.6K

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 23.4/100

Expected Annual Loss

Very Low

$10.8M/year

Social Vulnerability

Very Low

Community Resilience

Very High

Hazard Risk Breakdown

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

Iowa County's closest FEMA peer: Faulk County, SD

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Iowa 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 17 FEMA declarations, Iowa 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 Iowa County?
The most common disaster type in Iowa County is Severe Storm, with 9 declarations. Other disaster types include Flood (2), Biological (2), Snowstorm (1).
How does Iowa County's FEMA declaration record compare with the Wisconsin average?
FEMA lists 17 declaration records for Iowa County. That is 38% above the Wisconsin county mean of 12.3. Its count is also 18% below 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 Iowa County received?
Iowa County has received 14 major disaster declarations, representing 82% of all 17 disaster declarations.
How many flood insurance claims has Iowa County filed?
Iowa County has 25 National Flood Insurance Program (NFIP) claims totaling $215.7K in payments, with an average of $8.6K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Iowa County?
No. In Iowa County, Landslide has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $4.9M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Iowa County?
The most active year for disaster declarations in Iowa County was 1976, with 2 declarations. The county has FEMA disaster data spanning 1976 to 2026.
What is the FEMA National Risk Index score for Iowa County?
According to the FEMA National Risk Index, Iowa County, Wisconsin has an overall risk score of 23.4 out of 100 (Very Low). On social vulnerability the county rates Very Low; on community resilience, Very High. The Expected Annual Loss (EAL) score is Very Low, representing $10.8M in annualized losses.
Which natural hazard poses the greatest risk to Iowa County?
Based on FEMA NRI data, the highest-risk natural hazard in Iowa County is Landslide (risk rating: Relatively Moderate). Other significant hazards include Hail (Relatively Moderate) and Cold Wave (Relatively Low). FEMA's modeled event frequency puts landslide here at roughly once every 1 years. 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.

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