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Iowa · FEMA + NOAA + National Risk Index

Worth 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
14
Major disasters
10
NRI risk · Very Low
Severe Storm
Top hazard

The verdict

Worth 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 10%; that score models loss and vulnerability rather than counting declarations.

Safer than 10%
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
5
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 19195 · Worth County 16 declarations · rank 2250/3,266

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

  • DECL-MID 16
  • MAJOR-HEAVY 88%
  • RANK-LOWER #2,250
  • 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

Worth County among counties with fewer federal records

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

declarations

What this shows Worth County carries 16 FEMA declaration records, ranked 2250 of 3,266 counties in this registry.

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

Worth County versus quieter counties in this dataset

Worth County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Worth 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

Worth County's FEMA Risk Index score

0/100100/100Iowa avg40/1009.9/100
FEMA National Risk Index composite score vs. the Iowa county average

What does Worth County's hazard record show?

FEMA National Risk Index

FEMA's National Risk Index places this county in the low end of the national distribution, composite score 9.9/100 (Very Low). Expected Annual Loss is rated Very Low (roughly $7.0M in annualized losses). Two modifiers shape how that exposure becomes real-world harm here: social vulnerability (Very Low) and community resilience (Relatively High). Among the 18 modeled hazards, Drought carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at 22 modeled event-days per year here, based on 588 historical events on record.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 5 claims and $7.3K 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 Worth 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

Worth 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
22/25

14 of 16 declarations are major disasters (88%)

Hazard Diversity High
13/20

5 different disaster types declared in Worth County

FEMA NRI 8-hazard radar - Worth County

Worth 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 48, Heat Wave 8, Winter Storm 25. The simple mean of these eight displayed scores is 16 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 16 8-hazard mean
Worth County NRI risk profile FIPS 19195 · displayed-hazard mean 16/100
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

88%

Mostly major

NRI risk score

10

Very Low

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

How often does each hazard strike Worth 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 Moderate 22 modeled event-days per year
Winter Weather Relatively Low an average of 20 times per year
Cold Wave Relatively Low an average of 11 times per year
Tornado Relatively Low roughly once every 3 years
Hail Very Low an average of 4.4 times per year
Strong Wind Relatively Low an average of 3.7 times per year
Landslide Very Low roughly once every 23 years
Ice Storm Very Low roughly once every 1 years
Riverine Flooding Very Low an average of 1.1 times per year
Heat Wave Very Low 3.4 modeled event-days per year
Earthquake Very Low roughly once every 2,315 years
Wildfire Very Low roughly once every 8,205 years
Lightning Very Low an average of 40 times 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 7
Flood 5
Biological 2
Hurricane 1
Severe Ice Storm 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Worth County's record, 44% 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 87.5%

of all 16 declarations

Emergency - 2 12.5%

of all 16 declarations

FEMA Declarations Timeline

Year Declarations
2024 1
2022 1
2020 2
2019 1
2013 1
2008 1
2007 1
2005 1
2004 1
1999 1
1993 1
1992 1
1990 1
1969 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
4642 SEVERE STORMS, STRAIGHT-LINE WINDS, AND TORNADOES DR Severe Storm 2022-02-23
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
4126 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2013-07-02
1763 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2008-05-27
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
1282 SEVERE STORMS AND FLOODING DR Severe Storm 1999-07-22
996 SEVERE STORMS & FLOODING DR Flood 1993-07-09
928 ICE STORM DR Severe Ice Storm 1991-12-26
879 SEVERE STORMS & FLOODING DR Flood 1990-09-06
269 HEAVY RAINS & FLOODING DR Flood 1969-08-14
193 FLOODING DR Flood 1965-04-22

Storm Events in Iowa

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

5

Total Paid

$7.3K

Avg Per Claim

$1.5K

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 9.9/100

Expected Annual Loss

Very Low

$7.0M/year

Social Vulnerability

Very Low

Community Resilience

Relatively High

Hazard Risk Breakdown

Drought Relatively Moderate
Winter Weather Relatively Low
Cold Wave Relatively Low
Tornado Relatively Low
Hail Very Low
Strong Wind Relatively Low
Landslide Very Low
Ice Storm Very Low
Riverine Flooding Very Low
Heat Wave Very Low
Earthquake Very Low
Wildfire Very Low
Lightning 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 Worth County: the model and the federal record do NOT point at the same hazard. Drought 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

Worth County's closest FEMA peer: Eastern District, AS

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Worth 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, Worth 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 Worth County?
The most common disaster type in Worth County is Severe Storm, with 7 declarations. Other disaster types include Flood (5), Biological (2), Hurricane (1).
How does Worth County's FEMA declaration record compare with the Iowa average?
The typical Iowa county has 19.3 FEMA declaration records; Worth 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 Worth County received?
Worth County has received 14 major disaster declarations, representing 88% of all 16 disaster declarations.
How many flood insurance claims has Worth County filed?
Worth County has 5 National Flood Insurance Program (NFIP) claims totaling $7.3K in payments, with an average of $1.5K per claim.
What was the worst year for disasters in Worth County?
The most active year for disaster declarations in Worth County was 2020, with 2 declarations. The county has FEMA disaster data spanning 1965 to 2024.
What is the FEMA National Risk Index score for Worth County?
According to the FEMA National Risk Index, Worth County, Iowa has an overall risk score of 9.9 out of 100 (Very Low). On social vulnerability the county rates Very Low; on community resilience, Relatively High. The Expected Annual Loss (EAL) score is Very Low, representing $7.0M in annualized losses.
Which natural hazard poses the greatest risk to Worth County?
FEMA's NRI data points to Worth County as of the latest release is Drought (risk rating: Relatively Moderate). Other significant hazards include Winter Weather (Relatively Low) and Cold Wave (Relatively Low). FEMA's modeled event frequency puts drought here at 22 modeled event-days per year, drawn from 588 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 Worth County · vintage 2026-08-25 · Methodology · Iowa profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events