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Wisconsin · FEMA + NOAA + National Risk Index

Dane County, WI

19 FEMA disaster declarations (1976-2020), with a FEMA National Risk Index rating of Relatively Moderate. Most common hazard: Severe Storm.

19
FEMA declarations
14
Major disasters
94
NRI risk · Relatively Moderate
Severe Storm
Top hazard

The verdict

Two federal records point in the busier direction for Dane County. Its 19 FEMA declarations are 54% above the Wisconsin county mean and exceed the count for 41% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it in the riskiest 6%, based on modeled expected annual loss, social vulnerability, and community resilience.

Riskiest 6%
of U.S. counties for FEMA National Risk Index score
Relatively Moderate
FEMA National Risk Index rating
19
FEMA declarations vs 21 national county avg
333
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 Dane County compare?

Dane County vs. all counties in this dataset

FEMA disaster declarations, all-time

19 41st percentile higher than 41% 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

Dane County's FEMA Risk Index score

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

0/100100/100Wisconsin avg59/10093.9/100
FEMA National Risk Index composite score vs. the Wisconsin county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Dane County is led by Riverine Flooding (about $84.0M Expected Annual Loss, Historical Loss Ratio Relatively High), while Cold Wave carries the highest National Risk Index rating (Very 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 Dane County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 333 paid claims, totaling $8.7M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $26.1K 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. Dane County's 19 federal records stand 54% 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.

FEMA National Risk Index

This county sits among the highest-risk counties nationally on FEMA's National Risk Index, a composite score of 93.9/100 (Relatively Moderate). Expected Annual Loss is rated Relatively Moderate (roughly $182.0M in annualized losses). Social vulnerability reads Very Low and community resilience Very High, both critical modifiers of realized harm here. Of the 18 hazards FEMA models, Cold Wave stands out as the sharpest exposure here, rated Very High. FEMA's modeled frequency puts that hazard at an average of 5.7 times per year here, based on 109 historical events on record.

Declaration frequency

The FEMA register is busy by both local and national comparisons. It contains 19 entries for Dane County, including 14 Major Disaster records, 54% above the Wisconsin county mean. Across the 44-year span, that works out to 0.4 declarations a year. Severe Storm leads the file with 8 entries. Declaration type records the federal action taken, not every assistance program approved.

69 /100

Historical Activity Index

High historical activity

Dane 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
14/30

19 OpenFEMA declarations, full ingest window (0.9x national county average)

County Disaster Density Very High
19/25

19 declarations (1.5x state county average of 12)

Major Disaster Share High
18/25

14 of 19 declarations are major disasters (74%)

Hazard Diversity Very High
18/20

7 different disaster types declared in Dane County

Historical Declaration Activity

Activity Band

High

vs. Wisconsin Avg

+54%

State avg: 12.3

vs. National Avg

-8%

National avg: 20.7

Avg Per Year

0.4

Over 44 years

FEMA NRI 8-hazard radar - Dane County

Dane County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 25, Flood 70, Hurricane 8, Tornado 70, Wildfire 8, Drought 25, Heat Wave 48, Winter Storm 92. The simple mean of these eight displayed scores is 43 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 43 8-hazard mean
Dane County NRI risk profile FIPS 55025 · displayed-hazard mean 43/100
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

19

Below median

Major Disaster share

74%

Major-heavy

NRI risk score

94

Relatively Moderate

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

How often does each hazard strike Dane 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
Cold Wave Very High an average of 5.7 times per year
Hail Relatively High an average of 3.8 times per year
Tornado Relatively High roughly once every 1 years
Heat Wave Relatively Moderate 3.5 modeled event-days per year
Riverine Flooding Relatively High an average of 2.1 times per year
Winter Weather Relatively High an average of 16 times per year
Strong Wind Relatively High an average of 4.4 times per year
Lightning Relatively High an average of 37 times per year
Landslide Relatively Moderate roughly once every 2 years
Ice Storm Relatively High roughly once every 2 years
Earthquake Relatively Low roughly once every 1,517 years
Wildfire Very Low roughly once every 4,725 years
Drought Relatively Low 3.4 modeled event-days per year
Hurricane Very Low roughly once every 129 years

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

Disaster Types

Severe Storm 8
Snowstorm 3
Biological 2
Flood 2
Tornado 2
Hurricane 1
Drought 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Dane County's record, 42% 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 73.7%

of all 19 declarations

Emergency - 5 26.3%

of all 19 declarations

FEMA Declarations Timeline

Year Declarations
2020 2
2019 1
2011 1
2008 2
2007 1
2005 1
2004 1
2001 1
2000 1
1993 1
1992 1
1991 1
1990 1
1984 1
1978 1
Show 1 earlier declaration years
1976 2

Disaster Declarations

How the 19 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 19 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4520 COVID-19 PANDEMIC DR Biological 2020-04-04
3454 COVID-19 EM Biological 2020-03-13
4402 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, FLOODING, AND LANDSLIDES DR Flood 2018-10-18
1966 SEVERE WINTER STORM AND SNOWSTORM DR Snowstorm 2011-04-05
1768 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2008-06-14
3285 RECORD SNOW AND NEAR RECORD SNOW EM Snowstorm 2008-03-19
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
3163 SNOW EM Snowstorm 2001-01-24
1332 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2000-06-24
994 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1993-07-02
963 SEVERE STORMS & TORNADOES DR Tornado 1992-09-18
912 SEVERE STORMS & HAIL DR Severe Storm 1991-08-06
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 Dane 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

333

Total Paid

$8.7M

Avg Per Claim

$26.1K

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

FEMA National Risk Index

Overall Risk

Relatively Moderate

Score: 93.9/100

Expected Annual Loss

Relatively Moderate

$182.0M/year

Social Vulnerability

Very Low

Community Resilience

Very High

Hazard Risk Breakdown

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

Cold Wave measures exposure to extreme cold rather than to snow. Its harm is concentrated in health effects, burst infrastructure and energy demand spikes, and it falls hardest where the building stock and the grid were not built with sustained cold in mind.

Worth noting for Dane County: the model and the federal record do NOT point at the same hazard. Cold Wave carries the highest modeled rating (Very 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

Dane County's closest FEMA peer: Pinal County, AZ

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

Further reading for this county

Understanding disaster data

Dane County's NFIP claims file (333 claims) and FEMA declaration history measure different federal records - this guide separates them from modeled NRI risk.

More PlainHazard guides

Frequently Asked Questions

What is the most common disaster type in Dane County?
The most common disaster type in Dane County is Severe Storm, with 8 declarations. Other disaster types include Snowstorm (3), Biological (2), Flood (2).
How does Dane County's FEMA declaration record compare with the Wisconsin average?
FEMA lists 19 declaration records for Dane County. That is 54% above the Wisconsin county mean of 12.3. Its count is also 8% 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 Dane County received?
Dane County has received 14 major disaster declarations, representing 74% of all 19 disaster declarations.
How many flood insurance claims has Dane County filed?
Dane County has 333 National Flood Insurance Program (NFIP) claims totaling $8.7M in payments, with an average of $26.1K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Dane County?
No. In Dane County, Cold Wave has the highest National Risk Index rating (Very High), while Riverine Flooding leads Expected Annual Loss at about $84.0M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Dane County?
The most active year for disaster declarations in Dane County was 1976, with 2 declarations. The county has FEMA disaster data spanning 1976 to 2020.
What is the FEMA National Risk Index score for Dane County?
According to the FEMA National Risk Index, Dane County, Wisconsin has an overall risk score of 93.9 out of 100 (Relatively Moderate). On social vulnerability the county rates Very Low; on community resilience, Very High. The Expected Annual Loss (EAL) score is Relatively Moderate, representing $182.0M in annualized losses.
Which natural hazard poses the greatest risk to Dane County?
Based on FEMA NRI data, the highest-risk natural hazard in Dane County as of the latest release is Cold Wave (risk rating: Very High). Other significant hazards include Hail (Relatively High) and Tornado (Relatively High). FEMA's modeled event frequency puts cold wave here at an average of 5.7 times per year, drawn from 109 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 Dane County

Dane County, WI has 19 federal declaration records, 54% more than the Wisconsin county mean of 12; its history sits in PlainHazard's high activity band.

  • Within this above-state-average declaration file, major disaster leads with 14 of 19 records; the category describes past federal action, not the next likely hazard. Wisconsin overview
  • The state benchmark and national rank point the same way: this count tops the Wisconsin mean and the totals for 41% 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.

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.