PlainHazard

If you are in immediate danger, call 911.

The data below is historical (NOAA Storm Events / FEMA), not a live alert. For current warnings and evacuation orders, check the National Weather Service, Ready.gov, or FEMA.gov.

Iowa · FEMA + NOAA + National Risk Index

Washington County, IA

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

15
FEMA declarations
13
Major disasters
44
NRI risk · Relatively Low
Severe Storm
Top hazard

The verdict

Washington County has a nationally busy FEMA history: 15 declarations, more than 23% of counties in this registry. But the state comparison tempers that reading: the total is 22% below the Iowa county mean. FEMA's separate National Risk Index places the county safer than 44%; that score models loss and vulnerability rather than counting declarations.

Safer than 44%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
15
FEMA declarations vs 21 national county avg
15
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.

View my watchlist

FEMA OpenFEMA declaration desk

County FIPS 19183 · Washington County 15 declarations · rank 2407/3,266

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

  • DECL-MID 15
  • MAJOR-HEAVY 87%
  • RANK-LOWER #2,407
  • PHOTO-FINISH Polk
  • NRI-LOW 44
  • ACT-HIGH High
  • TYPE-LEAD Severe Storm
  • VS-ST-BELOW -22%

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

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

Washington County among counties with fewer federal records

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

declarations

What this shows Washington County carries 15 FEMA declaration records, ranked 2407 of 3,266 counties in this registry.

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

Washington County versus quieter counties in this dataset

Washington County among lower-declaration counties nationally

FEMA disaster declarations, all-time · Washington County

15 23rd percentile higher than 23% 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

Washington County's FEMA Risk Index score

0/100100/100Iowa avg40/10044.2/100
FEMA National Risk Index composite score vs. the Iowa county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Washington County is led by Riverine Flooding (about $6.2M Expected Annual Loss, Historical Loss Ratio Relatively Moderate), while Strong Wind carries the highest National Risk Index rating (Relatively 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 Washington County's hazard record show?

FEMA National Risk Index

FEMA's data shows an elevated National Risk Index composite of 44.2/100 for this county (Relatively Low rating). Expected Annual Loss comes in at Very Low (roughly $13.9M 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, Strong Wind stands out as the sharpest exposure here, rated Relatively High. FEMA's modeled frequency puts that hazard at an average of 6.2 times per year here, based on 236 historical events on record.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 15 claims and $188.7K 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.

Start with the state benchmark: a Iowa county averages 19.3 federal declaration records, while Washington County has 15. The gap is 22% 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.

56 /100

Historical Activity Index

High historical activity

Washington 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
11/30

15 OpenFEMA declarations, full ingest window (0.7x national county average)

County Disaster Density Moderate
10/25

15 declarations (0.8x state county average of 19)

Major Disaster Share Very High
22/25

13 of 15 declarations are major disasters (87%)

Hazard Diversity High
13/20

5 different disaster types declared in Washington County

FEMA NRI 8-hazard radar - Washington County

Washington County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 25, Hurricane 8, Tornado 25, Wildfire 8, Drought 48, Heat Wave 25, Winter Storm 25. 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
Washington County NRI risk profile FIPS 19183 · 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

15

Below median

Major Disaster share

87%

Mostly major

NRI risk score

44

Relatively Low

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

How often does each hazard strike Washington 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 High an average of 6.2 times per year
Hail Relatively Moderate an average of 4.4 times per year
Drought Relatively Moderate 8.4 modeled event-days per year
Heat Wave Relatively Low 8.3 modeled event-days per year
Landslide Very Low roughly once every 7 years
Tornado Relatively Low roughly once every 2 years
Wildfire Very Low roughly once every 1,132 years
Winter Weather Relatively Low an average of 14 times per year
Lightning Relatively Low an average of 44 times per year
Riverine Flooding Relatively Low an average of 1.7 times per year
Ice Storm Relatively Low roughly once every 3 years
Cold Wave Relatively Low an average of 6.1 times per year
Earthquake Very Low roughly once every 1,002 years
Hurricane Very Low roughly once every 174 years

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 4
Biological 2
Severe Ice Storm 1
Hurricane 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Washington County's record, 47% 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 86.7%

of all 15 declarations

Emergency - 2 13.3%

of all 15 declarations

FEMA Declarations Timeline

Year Declarations
2020 3
2014 1
2010 1
2008 2
2007 1
2005 1
2004 1
1998 1
1996 1
1993 1
1990 1
1965 1

Disaster Declarations

How the 15 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 15 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4557 SEVERE STORMS DR Severe Storm 2020-08-17
4483 COVID-19 PANDEMIC DR Biological 2020-03-23
3480 COVID-19 EM Biological 2020-03-13
4187 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING DR Severe Storm 2014-08-05
1930 SEVERE STORMS, FLOODING, AND TORNADOES DR Severe Storm 2010-07-29
1763 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2008-05-27
1737 SEVERE WINTER STORM DR Severe Ice Storm 2008-01-04
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
1121 SEVERE STORMS AND FLOODING DR Severe Storm 1996-06-24
996 SEVERE STORMS & FLOODING DR Flood 1993-07-09
868 SEVERE STORMS & FLOODING DR Flood 1990-05-26
193 FLOODING DR Flood 1965-04-22

Storm Events in Iowa

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

15

Total Paid

$188.7K

Avg Per Claim

$12.6K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 44.2/100

Expected Annual Loss

Very Low

$13.9M/year

Social Vulnerability

Relatively Moderate

Community Resilience

Very High

Hazard Risk Breakdown

Strong Wind Relatively High
Hail Relatively Moderate
Drought Relatively Moderate
Heat Wave Relatively Low
Landslide Very Low
Tornado Relatively Low
Wildfire Very Low
Winter Weather Relatively Low
Lightning Relatively Low
Riverine Flooding Relatively Low
Ice Storm Relatively Low
Cold Wave Relatively Low
Earthquake 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: 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 Washington County the two measures on this page point the same way: Strong Wind is the county's highest-rated modeled hazard (Relatively High), 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

Washington County's closest FEMA peer: Manu'a District, AS

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Washington 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 15 FEMA declarations, Washington 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 Washington County?
The most common disaster type in Washington County is Severe Storm, with 7 declarations. Other disaster types include Flood (4), Biological (2), Severe Ice Storm (1).
How does Washington County's FEMA declaration record compare with the Iowa average?
The typical Iowa county has 19.3 FEMA declaration records; Washington County has 15, or 22% fewer. Against the national county mean of 20.7, this county's total is 28% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Washington County received?
Washington County has received 13 major disaster declarations, representing 87% of all 15 disaster declarations.
How many flood insurance claims has Washington County filed?
Washington County has 15 National Flood Insurance Program (NFIP) claims totaling $188.7K in payments, with an average of $12.6K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Washington County?
No. In Washington County, Strong Wind has the highest National Risk Index rating (Relatively High), while Riverine Flooding leads Expected Annual Loss at about $6.2M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Washington County?
The most active year for disaster declarations in Washington County was 2020, with 3 declarations. The county has FEMA disaster data spanning 1965 to 2020.
What is the FEMA National Risk Index score for Washington County?
According to the FEMA National Risk Index, Washington County, Iowa has an overall risk score of 44.2 out of 100 (Relatively Low). On social vulnerability the county rates Relatively Moderate; on community resilience, Very High. The Expected Annual Loss (EAL) score is Very Low, representing $13.9M in annualized losses.
Which natural hazard poses the greatest risk to Washington County?
Based on FEMA NRI data, the highest-risk natural hazard in Washington County as of the latest release is Strong Wind (risk rating: Relatively High). Other significant hazards include Hail (Relatively Moderate) and Drought (Relatively Moderate). FEMA's modeled event frequency puts strong wind here at an average of 6.2 times per year, drawn from 236 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 Washington County · vintage 2026-08-25 · Methodology · Iowa profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events