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Wisconsin · FEMA + NOAA + National Risk Index

Pierce County, WI

13 FEMA disaster declarations (1965-2020), with a FEMA National Risk Index rating of Very Low. Most common hazard: Severe Storm.

13
FEMA declarations
10
Major disasters
42
NRI risk · Very Low
Severe Storm
Top hazard

The verdict

Two federal records point in the busier direction for Pierce County. Its 13 FEMA declarations are 6% above the Wisconsin county mean and exceed the count for 17% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it safer than 42%, based on modeled expected annual loss, social vulnerability, and community resilience.

Safer than 42%
of U.S. counties for FEMA National Risk Index score
Very Low
FEMA National Risk Index rating
13
FEMA declarations vs 21 national county avg
126
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 Pierce County compare?

Pierce County vs. all counties in this dataset

FEMA disaster declarations, all-time

13 17th percentile higher than 17% 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

Pierce County's FEMA Risk Index score

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

0/100100/100Wisconsin avg59/10042.3/100
FEMA National Risk Index composite score vs. the Wisconsin county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Pierce County is led by Riverine Flooding (about $8.9M Expected Annual Loss, Historical Loss Ratio Relatively High), while Strong Wind 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 Pierce County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 126 paid claims, totaling $2.8M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $22.6K 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. Pierce County's 13 federal records stand 6% 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

FEMA's data shows an elevated National Risk Index composite of 42.3/100 for this county (Very Low rating). Expected Annual Loss comes in at Relatively Low (roughly $18.8M in annualized losses). Social vulnerability (Very Low) and community resilience (Relatively Moderate) both factor into how that raw exposure plays out on the ground. Among the 18 modeled hazards, Strong Wind carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at an average of 4.2 times per year here, based on 162 historical events on record.

Declaration frequency

The FEMA register is busy by both local and national comparisons. It contains 13 entries for Pierce County, including 10 Major Disaster records, 6% above the Wisconsin county mean. Across the 55-year span, that works out to 0.2 declarations a year. Severe Storm leads the file with 4 entries. Declaration type records the federal action taken, not every assistance program approved.

56 /100

Historical Activity Index

High historical activity

Pierce 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
9/30

13 OpenFEMA declarations, full ingest window (0.6x national county average)

County Disaster Density High
13/25

13 declarations (1.1x state county average of 12)

Major Disaster Share Very High
19/25

10 of 13 declarations are major disasters (77%)

Hazard Diversity Very High
15/20

6 different disaster types declared in Pierce County

Historical Declaration Activity

Activity Band

High

vs. Wisconsin Avg

+6%

State avg: 12.3

vs. National Avg

-37%

National avg: 20.7

Avg Per Year

0.2

Over 55 years

FEMA NRI 8-hazard radar - Pierce County

Pierce County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 25, Hurricane 0, Tornado 48, Wildfire 8, Drought 25, Heat Wave 8, Winter Storm 25. The simple mean of these eight displayed scores is 18 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 18 8-hazard mean
Pierce County NRI risk profile FIPS 55093 · displayed-hazard mean 18/100
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

13

Low volume

Major Disaster share

77%

Mostly major

NRI risk score

42

Very Low

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

How often does each hazard strike Pierce 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
Strong Wind Relatively Moderate an average of 4.2 times per year
Landslide Relatively Low roughly once every 4 years
Hail Relatively Moderate an average of 5.6 times per year
Tornado Relatively Moderate roughly once every 3 years
Cold Wave Relatively Low an average of 8.6 times per year
Riverine Flooding Relatively Low roughly once every 2 years
Lightning Relatively Low an average of 36 times per year
Winter Weather Relatively Low an average of 17 times per year
Drought Relatively Low 3.8 modeled event-days per year
Heat Wave Very Low 3.6 modeled event-days per year
Ice Storm Very Low roughly once every 3 years
Wildfire Very Low roughly once every 15,137 years
Earthquake Very Low roughly once every 4,717 years

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

Disaster Types

Flood 4
Severe Storm 4
Biological 2
Hurricane 1
Drought 1
Tornado 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Pierce County's record, 31% 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 - 10 76.9%

of all 13 declarations

Emergency - 3 23.1%

of all 13 declarations

FEMA Declarations Timeline

Year Declarations
2020 2
2005 1
2001 1
1998 1
1993 1
1992 1
1980 1
1978 1
1976 1
1975 1
1969 1
1965 1

Disaster Declarations

How the 13 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 13 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
3249 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-13
1369 FLOODING, SEVERE STORMS AND TORNADOES DR Flood 2001-05-11
1236 SEVERE STORMS,STRAIGH LINE WINDS, TORNADOES,RAIN,AND FLOODI DR Severe Storm 1998-07-24
994 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1993-07-02
964 SEVERE STORMS & FLOODING DR Flood 1992-09-30
626 SEVERE STORMS & FLOODING DR Flood 1980-07-24
559 SEVERE STORMS, FLOODING, HAIL & TORNADOES DR Severe Storm 1978-07-07
3014 DROUGHT EM Drought 1976-06-17
482 HEAVY RAINS, TORNADOES & FLASH FLOODS DR Severe Storm 1975-09-15
260 FLOODING DR Flood 1969-05-01
192 TORNADOES, SEVERE STORMS & FLOODING DR Tornado 1965-04-21

Storm Events in Wisconsin

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

126

Total Paid

$2.8M

Avg Per Claim

$22.6K

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 42.3/100

Expected Annual Loss

Relatively Low

$18.8M/year

Social Vulnerability

Very Low

Community Resilience

Relatively Moderate

Hazard Risk Breakdown

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

Strong Wind covers damaging non-thunderstorm, non-tornadic wind, the kind produced by steep pressure gradients and downslope events. It is a broad, frequent, low-drama hazard: roofs, signage, power lines and high-profile vehicles, spread across a wide area rather than concentrated on a path.

For Pierce County the two measures on this page point the same way: Strong Wind is the county's highest-rated modeled hazard (Relatively Moderate), and Severe Storm declarations also lead its federal record. Where the model and the declaration history agree, the reading is comparatively straightforward, the hazard is both expected and repeatedly realised.

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

Pierce County's closest FEMA peer: Stearns County, MN

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

Further reading for this county

Understanding disaster data

Pierce County's NFIP claims file (126 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 Pierce County?
The most common disaster type in Pierce County is Severe Storm, with 4 declarations. Other disaster types include Flood (4), Biological (2), Hurricane (1).
How does Pierce County's FEMA declaration record compare with the Wisconsin average?
FEMA lists 13 declaration records for Pierce County. That is 6% above the Wisconsin county mean of 12.3. Its count is also 37% 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 Pierce County received?
Pierce County has received 10 major disaster declarations, representing 77% of all 13 disaster declarations.
How many flood insurance claims has Pierce County filed?
Pierce County has 126 National Flood Insurance Program (NFIP) claims totaling $2.8M in payments, with an average of $22.6K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Pierce County?
No. In Pierce County, Strong Wind has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $8.9M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Pierce County?
The most active year for disaster declarations in Pierce County was 2020, with 2 declarations. The county has FEMA disaster data spanning 1965 to 2020.
What is the FEMA National Risk Index score for Pierce County?
According to the FEMA National Risk Index, Pierce County, Wisconsin has an overall risk score of 42.3 out of 100 (Very Low). Social vulnerability here rates Very Low, while community resilience comes in at Relatively Moderate. The Expected Annual Loss (EAL) score is Relatively Low, representing $18.8M in annualized losses.
Which natural hazard poses the greatest risk to Pierce County?
The top hazard flagged by FEMA's NRI for Pierce County as of the latest release is Strong Wind (risk rating: Relatively Moderate). Other significant hazards include Landslide (Relatively Low) and Hail (Relatively Moderate). FEMA's modeled event frequency puts strong wind here at an average of 4.2 times per year, drawn from 162 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 Pierce County

Pierce County, WI has 13 federal declaration records, 6% 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 10 of 13 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 17% 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.