FEMA Records
19
Below median
Iowa · FEMA + NOAA + National Risk Index
Sac County, IA
19 FEMA disaster declarations (1965-2022), with a FEMA National Risk Index rating of Very Low. Most common hazard: Severe Storm.
- 19
- FEMA declarations
- 16
- Major disasters
- 27
- NRI risk · Very Low
- Severe Storm
- Top hazard
The verdict
Sac County has a nationally busy FEMA history: 19 declarations, more than 41% of counties in this registry. But the state comparison tempers that reading: the total is 2% below the Iowa county mean. FEMA's separate National Risk Index places the county safer than 27%; that score models loss and vulnerability rather than counting declarations.
- Safer than 27%
- of U.S. counties for FEMA National Risk Index score
- Very Low
- FEMA National Risk Index rating
- 19
- FEMA declarations vs 21 national county avg
- 2
- 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.
FEMA OpenFEMA declaration desk
County FIPS 19161 · Sac County 19 declarations · rank 1767/3,266
DECL-MID · MAJOR-HEAVY · RANK-LOWER · PHOTO-FINISH · NRI-LOW · ACT-HIGH · TYPE-LEAD · VS-ST-BELOW
- DECL-MID 19
- MAJOR-HEAVY 84%
- RANK-LOWER #1,767
- PHOTO-FINISH Bartow
- NRI-LOW Very Low
- ACT-HIGH High
- TYPE-LEAD Severe Storm
- VS-ST-BELOW -2%
Nearest declaration peer: Bartow, GA (0 declaration gap)
FEMA Disaster Declarations Summaries v2 filing stamps for this county register. Read with this county → · Iowa state profile
Sac County in the declaration-count neighbourhood
FEMA declaration records among Sac County and nearest peers by total count
- Los Angeles · largest
Los Angeles · largest
88 declarations
- Bartow · near 19
Bartow · near
19 declarations
- Sac · this county 19
Sac · this county
19 declarations
- Union · near 19
Union · near
19 declarations
- Warren · near 19
Warren · near
19 declarations
- Ujelang · smallest 1
Ujelang · smallest
1 declarations
What this shows Sac County carries 19 FEMA declaration records, ranked 1767 of 3,266 counties in this registry.
How Sac County's FEMA declaration count compares nationally
Sac County vs. all counties in this dataset
FEMA disaster declarations, all-time · Sac County
19 41st percentile higher than 41% of 3,266 counties
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
Sac County's FEMA Risk Index score
Which hazard drives modeled loss here?
FEMA's modeled annual dollar loss for Sac County is led by Riverine Flooding (about $3.4M Expected Annual Loss, Historical Loss Ratio Relatively High), while Drought 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 Sac County's hazard record show?
FEMA National Risk Index
This county's FEMA National Risk Index composite lands at 27.3/100 (Very Low), a modest reading against the rest of the country. Expected Annual Loss is rated Relatively Low (roughly $14.7M in annualized losses), tempered or compounded by a Very Low social-vulnerability score and Very High community-resilience score. Of the 18 hazards FEMA models, Drought stands out as the sharpest exposure here, rated Relatively High. FEMA's modeled frequency puts that hazard at 15 modeled event-days per year here, based on 469 historical events on record.
Reading the federal records together
This county has a small entry in FEMA's NFIP paid-claims table: 2 claims and $0 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 Sac County has 19. The gap is 2% 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.
62 /100
Historical Activity Index
High historical activity
Sac 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
14/30
19 OpenFEMA declarations, full ingest window (0.9x national county average)
County Disaster Density Moderate
12/25
19 declarations (1.0x state county average of 19)
Major Disaster Share Very High
21/25
16 of 19 declarations are major disasters (84%)
Hazard Diversity Very High
15/20
6 different disaster types declared in Sac County
FEMA NRI 8-hazard radar - Sac County
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.
Major Disaster share
84%
Mostly major
NRI risk score
27
Very Low
Source: FEMA National Risk Index Per-county per-hazard ratings, December 2025 release
How often does each hazard strike Sac 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 High | 15 modeled event-days per year |
| Hail | Relatively Moderate | an average of 5.4 times per year |
| Tornado | Relatively Low | roughly once every 2 years |
| Ice Storm | Relatively Low | roughly once every 2 years |
| Cold Wave | Relatively Low | an average of 8.6 times per year |
| Winter Weather | Relatively Low | an average of 16 times per year |
| Strong Wind | Relatively Low | an average of 4.1 times per year |
| Landslide | Very Low | roughly once every 14 years |
| Riverine Flooding | Very Low | an average of 1.6 times per year |
| Heat Wave | Very Low | 5.1 modeled event-days per year |
| Lightning | Very Low | an average of 43 times per year |
| Earthquake | Very Low | roughly once every 2,070 years |
| Wildfire | Very Low | roughly once every 6,388 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 5
Biological 2
Snowstorm 1
Hurricane 1
Severe Ice Storm 1
What Severe Storm declarations mean here
Severe Storm is the most frequent declaration type on Sac 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 - 16 84.2%
of all 19 declarations
Emergency - 3 15.8%
of all 19 declarations
FEMA Declarations Timeline
| Year | Declarations | |
|---|---|---|
| 2022 | 1 | |
| 2020 | 2 | |
| 2019 | 1 | |
| 2014 | 1 | |
| 2013 | 1 | |
| 2011 | 1 | |
| 2010 | 2 | |
| 2007 | 2 | |
| 2005 | 1 | |
| 2004 | 1 | |
| 2001 | 1 | |
| 1998 | 1 | |
| 1996 | 1 | |
| 1993 | 1 | |
| 1992 | 1 | |
Show 1 earlier declaration years
| 1965 | 1 | |
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 |
|---|---|---|---|---|
| 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 |
| 4184 | SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING | DR | Flood | 2014-07-24 |
| 4126 | SEVERE STORMS, TORNADOES, AND FLOODING | DR | Severe Storm | 2013-07-02 |
| 1977 | SEVERE STORMS, TORNADOES, AND STRAIGHT-LINE WINDS | DR | Severe Storm | 2011-05-05 |
| 1880 | SEVERE WINTER STORM | DR | Severe Storm | 2010-03-02 |
| 1877 | SEVERE WINTER STORMS AND SNOWSTORM | DR | Severe Storm | 2010-02-25 |
| 1705 | SEVERE STORMS, FLOODING, AND TORNADOES | DR | Severe Storm | 2007-05-25 |
| 3275 | SNOW | EM | Snowstorm | 2007-03-30 |
| 3239 | HURRICANE KATRINA EVACUATION | EM | Hurricane | 2005-09-10 |
| 1518 | SEVERE STORMS, TORNADOES, AND FLOODING | DR | Severe Storm | 2004-05-25 |
| 1367 | SEVERE STORMS, TORNADOES AND FLOODING | DR | Severe Storm | 2001-05-02 |
| 1230 | SEVERE STORMS, TORNADOES AND FLOODING | DR | Flood | 1998-07-02 |
| 1133 | SEVERE STORMS, AND FLOODING | DR | Severe Storm | 1996-08-21 |
| 996 | SEVERE STORMS & FLOODING | DR | Flood | 1993-07-09 |
| 928 | ICE STORM | DR | Severe Ice Storm | 1991-12-26 |
| 193 | FLOODING | DR | Flood | 1965-04-22 |
Storm Events in Iowa
Statewide NOAA context only. PlainHazard does not currently attribute these state totals to Sac 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
2
Total Paid
$0
Avg Per Claim
$0
Source: FEMA National Flood Insurance Program (NFIP) OpenFEMA Claims Data
FEMA National Risk Index
Overall Risk
Very Low
Score: 27.3/100
Expected Annual Loss
Relatively Low
$14.7M/year
Social Vulnerability
Very Low
Community Resilience
Very High
Hazard Risk Breakdown
Drought Relatively High
Hail Relatively Moderate
Tornado Relatively Low
Ice Storm Relatively Low
Cold Wave Relatively Low
Winter Weather Relatively Low
Strong Wind Relatively Low
Landslide Very Low
Riverine Flooding Very Low
Heat Wave Very Low
Lightning Very Low
Earthquake Very Low
Wildfire Very Low
Hurricane No Rating
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 Sac County: the model and the federal record do NOT point at the same hazard. Drought carries the highest modeled rating (Relatively 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
Sac County's closest FEMA peer: Union County, SD
Comparisons use published FEMA declaration fields plus the National Risk Index composite for Sac County. Record similarity, not a safety rating.
Closest declaration profiles
Sac County shows 19 FEMA declarations, led by Severe Storm.
Similar Major-disaster share
Sac County: 16 of 19 of its declarations are Major.
Similar modeled NRI score
Sac County: NRI composite 27.3 (Very Low).
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 Sac County - capture-dated entries only.
Compare beyond this state
Nationwide peers by NRI score & FEMA declaration volume
Two PlainHazard-derived comparison paths for Sac 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.
Similar NRI composite
Nearest out-of-state counties by FEMA NRI score. This county: 27.3 (Very Low).
Similar declaration volume
Nearest out-of-state counties by FEMA declaration count. This county: 19. NRI peers are excluded so the two link sets stay distinct.
Further reading for this county
Most disaster-prone counties
With 19 FEMA declarations, Sac County sits in the high-volume declaration band - see how that count ranks against other U.S. counties.
More PlainHazard guides
- Most disaster-prone counties - U.S. counties ranked by FEMA declaration totals.
- Understanding disaster data - declarations vs storm events vs NRI scores.
- Preparing for natural disasters - household checklist (not county-specific advice).
Frequently Asked Questions
What is the most common disaster type in Sac County?
The most common disaster type in Sac County is Severe Storm, with 9 declarations. Other disaster types include Flood (5), Biological (2), Snowstorm (1).
How does Sac County's FEMA declaration record compare with the Iowa average?
The typical Iowa county has 19.3 FEMA declaration records; Sac County has 19, or 2% fewer. Against the national county mean of 20.7, this county's total is 8% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Sac County received?
Sac County has received 16 major disaster declarations, representing 84% of all 19 disaster declarations.
How many flood insurance claims has Sac County filed?
Sac County has 2 National Flood Insurance Program (NFIP) claims totaling $0 in payments, with an average of $0 per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Sac County?
No. In Sac County, Drought has the highest National Risk Index rating (Relatively High), while Riverine Flooding leads Expected Annual Loss at about $3.4M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Sac County?
The most active year for disaster declarations in Sac County was 2007, with 2 declarations. The county has FEMA disaster data spanning 1965 to 2022.
What is the FEMA National Risk Index score for Sac County?
According to the FEMA National Risk Index, Sac County, Iowa has an overall risk score of 27.3 out of 100 (Very Low). Social vulnerability here rates Very Low, while community resilience comes in at Very High. The Expected Annual Loss (EAL) score is Relatively Low, representing $14.7M in annualized losses.
Which natural hazard poses the greatest risk to Sac County?
The top hazard flagged by FEMA's NRI for Sac County is Drought (risk rating: Relatively High). Other significant hazards include Hail (Relatively Moderate) and Tornado (Relatively Low). FEMA's modeled event frequency puts drought here at 15 modeled event-days per year, drawn from 469 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.
FEMA OpenFEMA declarations + NRI for Sac County · vintage 2026-08-25 · Methodology · Iowa profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events