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Iowa · FEMA + NOAA + National Risk Index

Tama County, IA

21 FEMA disaster declarations (1965-2024), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Flood.

21
FEMA declarations
19
Major disasters
45
NRI risk · Relatively Low
Flood
Top hazard

The verdict

Two federal records point in the busier direction for Tama County. Its 21 FEMA declarations are 9% above the Iowa county mean and exceed the count for 52% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it safer than 45%, based on modeled expected annual loss, social vulnerability, and community resilience.

Safer than 45%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
21
FEMA declarations vs 21 national county avg
145
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 19171 · Tama County 21 declarations · rank 1525/3,266

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

  • DECL-HEAVY 21
  • MAJOR-HEAVY 90%
  • RANK-LOWER #1,525
  • PHOTO-FINISH Montgomery
  • NRI-LOW 45
  • ACT-HIGH High
  • TYPE-LEAD Flood
  • VS-ST-ABOVE +9%

Nearest declaration peer: Montgomery, IN (0 declaration gap)

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

Tama County in the declaration-count neighbourhood

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

declarations

What this shows Tama County carries 21 FEMA declaration records, ranked 1525 of 3,266 counties in this registry.

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

How Tama County's FEMA declaration count compares nationally

Tama County vs. all counties in this dataset

FEMA disaster declarations, all-time · Tama County

21 Top 48% higher than 52% 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

Tama County's FEMA Risk Index score

0/100100/100Iowa avg40/10045.3/100
FEMA National Risk Index composite score vs. the Iowa county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Tama County is led by Riverine Flooding (about $4.6M Expected Annual Loss, Historical Loss Ratio Relatively Moderate), 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 Tama County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 145 paid claims, totaling $1.5M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $10.6K 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. Tama County's 21 federal records stand 9% above the Iowa county mean of 19.3. 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 45.3/100 for this county (Relatively Low rating). Expected Annual Loss comes in at Very Low (roughly $12.6M in annualized losses). Social vulnerability (Relatively Moderate) and community resilience (Relatively High) both factor into how that raw exposure plays out on the ground. 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 17 modeled event-days per year here, based on 455 historical events on record.

62 /100

Historical Activity Index

High historical activity

Tama 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) High
15/30

21 OpenFEMA declarations, full ingest window (1.0x national county average)

County Disaster Density High
14/25

21 declarations (1.1x state county average of 19)

Major Disaster Share Very High
23/25

19 of 21 declarations are major disasters (90%)

Hazard Diversity High
10/20

4 different disaster types declared in Tama County

FEMA NRI 8-hazard radar - Tama County

Tama 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 25, Drought 70, Heat Wave 8, Winter Storm 25. The simple mean of these eight displayed scores is 24 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 24 8-hazard mean
Tama County NRI risk profile FIPS 19171 · displayed-hazard mean 24/100
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

21

Above median

Major Disaster share

90%

Mostly major

NRI risk score

45

Relatively Low

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

How often does each hazard strike Tama 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 17 modeled event-days per year
Strong Wind Relatively High an average of 6.4 times per year
Wildfire Relatively Low roughly once every 545 years
Landslide Relatively Low roughly once every 6 years
Hail Relatively Low an average of 5.7 times per year
Winter Weather Relatively Low an average of 15 times per year
Tornado Relatively Low roughly once every 1 years
Cold Wave Relatively Low an average of 7.9 times per year
Riverine Flooding Relatively Low an average of 1.5 times per year
Ice Storm Relatively Low roughly once every 2 years
Earthquake Very Low roughly once every 1,600 years
Heat Wave Very Low 4.8 modeled event-days per year
Hurricane Very Low roughly once every 109 years
Lightning Very Low an average of 44 times per year

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

Disaster Types

Flood 10
Severe Storm 8
Biological 2
Hurricane 1

What Flood declarations mean here

Flood is the most frequent declaration type on Tama County's record, 48% of its declarations. Federal flood declarations cover two mechanisms that behave very differently: riverine flooding, which builds over days as a watershed drains and is usually forecast well in advance, and flash flooding, which can arrive in under an hour from rainfall that fell somewhere upstream.

Flood is also the one hazard class where a second federal dataset exists for the same events. The National Flood Insurance Program records what was actually paid on insured losses, so it measures a narrower thing than the declaration count: uninsured damage, and flooding outside mapped special flood hazard areas, never enters it. Reading the two together is more informative than either alone.

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 - 19 90.5%

of all 21 declarations

Emergency - 2 9.5%

of all 21 declarations

FEMA Declarations Timeline

Year Declarations
2024 1
2020 3
2019 1
2014 1
2013 1
2011 1
2008 1
2007 1
2005 1
2004 1
1998 1
1993 2
1991 1
1990 1
1974 1
Show 2 earlier declaration years
1969 2
1965 1

Disaster Declarations

How the 21 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 21 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4784 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2024-05-24
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
4421 SEVERE STORMS AND FLOODING DR Flood 2019-03-23
4187 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND FLOODING DR Severe Storm 2014-08-05
4126 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2013-07-02
4016 SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING DR Severe Storm 2011-08-24
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
1230 SEVERE STORMS, TORNADOES AND FLOODING DR Flood 1998-07-02
996 SEVERE STORMS & FLOODING DR Flood 1993-07-09
986 SEVERE STORMS & FLOODING DR Flood 1993-04-26
911 SEVERE STORMS & FLOODING DR Flood 1991-07-12
868 SEVERE STORMS & FLOODING DR Flood 1990-05-26
443 SEVERE STORMS & FLOODING DR Flood 1974-06-24
269 HEAVY RAINS & FLOODING DR Flood 1969-08-14
259 FLOODING DR Flood 1969-04-25
Show 1 earlier declaration records
DR# Title Type Incident Date
193 FLOODING DR Flood 1965-04-22

Storm Events in Iowa

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

145

Total Paid

$1.5M

Avg Per Claim

$10.6K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 45.3/100

Expected Annual Loss

Very Low

$12.6M/year

Social Vulnerability

Relatively Moderate

Community Resilience

Relatively High

Hazard Risk Breakdown

Drought Relatively High
Strong Wind Relatively High
Wildfire Relatively Low
Landslide Relatively Low
Hail Relatively Low
Winter Weather Relatively Low
Tornado Relatively Low
Cold Wave Relatively Low
Riverine Flooding Relatively Low
Ice Storm Relatively Low
Earthquake Very Low
Heat Wave Very Low
Hurricane 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 Tama 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 Flood. 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

Tama County's closest FEMA peer: Nuckolls County, NE

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Tama 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

Understanding disaster data

Tama County's NFIP claims file (145 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 Tama County?
The most common disaster type in Tama County is Flood, with 10 declarations. Other disaster types include Severe Storm (8), Biological (2), Hurricane (1).
How does Tama County's FEMA declaration record compare with the Iowa average?
FEMA lists 21 declaration records for Tama County. That is 9% above the Iowa county mean of 19.3. Its count is also 1% above 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 Tama County received?
Tama County has received 19 major disaster declarations, representing 90% of all 21 disaster declarations.
How many flood insurance claims has Tama County filed?
Tama County has 145 National Flood Insurance Program (NFIP) claims totaling $1.5M in payments, with an average of $10.6K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Tama County?
No. In Tama County, Drought has the highest National Risk Index rating (Relatively High), while Riverine Flooding leads Expected Annual Loss at about $4.6M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Tama County?
The most active year for disaster declarations in Tama County was 2020, with 3 declarations. The county has FEMA disaster data spanning 1965 to 2024.
What is the FEMA National Risk Index score for Tama County?
According to the FEMA National Risk Index, Tama County, Iowa has an overall risk score of 45.3 out of 100 (Relatively Low). The county's social vulnerability rating is Relatively Moderate and community resilience is Relatively High. The Expected Annual Loss (EAL) score is Very Low, representing $12.6M in annualized losses.
Which natural hazard poses the greatest risk to Tama County?
FEMA's NRI data points to Tama County as of the latest release is Drought (risk rating: Relatively High). Other significant hazards include Strong Wind (Relatively High) and Wildfire (Relatively Low). FEMA's modeled event frequency puts drought here at 17 modeled event-days per year, drawn from 455 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 Tama County · vintage 2026-08-25 · Methodology · Iowa profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events