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Tennessee · FEMA + NOAA + National Risk Index

Rhea County, TN

21 FEMA disaster declarations (1973-2026), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Severe Storm.

21
FEMA declarations
15
Major disasters
49
NRI risk · Relatively Low
Severe Storm
Top hazard

The verdict

Rhea County has a nationally busy FEMA history: 21 declarations, more than 52% of counties in this registry. But the state comparison tempers that reading: the total is 2% below the Tennessee county mean. FEMA's separate National Risk Index places the county safer than 49%; that score models loss and vulnerability rather than counting declarations.

Safer than 49%
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
82
NFIP flood insurance claims filed

FEMA's National Risk Index and its declaration registry are separate measures. This county's registry includes Fire Management Assistance (FM) records, which are not presidential disaster declarations, alongside Major Disaster (DR) and Emergency (EM) records.

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FEMA OpenFEMA declaration desk

County FIPS 47143 · Rhea County 21 declarations · rank 1548/3,266

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

  • DECL-HEAVY 21
  • MAJOR-MID 71%
  • RANK-LOWER #1,548
  • PHOTO-FINISH Montgomery
  • NRI-LOW 49
  • ACT-HIGH High
  • TYPE-LEAD Severe Storm
  • VS-ST-BELOW -2%

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

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

Rhea County in the declaration-count neighbourhood

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

declarations

What this shows Rhea County carries 21 FEMA declaration records, ranked 1548 of 3,266 counties in this registry.

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

How Rhea County's FEMA declaration count compares nationally

Rhea County vs. all counties in this dataset

FEMA disaster declarations, all-time · Rhea 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

Rhea County's FEMA Risk Index score

0/100100/100Tennessee avg53/10049.2/100
FEMA National Risk Index composite score vs. the Tennessee county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Rhea County is led by Riverine Flooding (about $8.5M Expected Annual Loss, Historical Loss Ratio Relatively Low), while Landslide carries the highest National Risk Index rating (Relatively Low). 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 Rhea County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 82 paid claims, totaling $1.7M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $20.6K average describes payments on recorded claims only, leaving uninsured damage and properties without a claim outside the measure.

Start with the state benchmark: a Tennessee county averages 21.4 federal declaration records, while Rhea County has 21. 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.

FEMA National Risk Index

FEMA's data shows an elevated National Risk Index composite of 49.2/100 for this county (Relatively Low rating). Expected Annual Loss comes in at Very Low (roughly $13.5M in annualized losses). Social vulnerability (Relatively Moderate) and community resilience (Relatively Low) both factor into how that raw exposure plays out on the ground. Even the county's top-rated hazard, Landslide, only reaches Relatively Low on FEMA's scale, none of the 18 modeled hazards stand out here. FEMA's modeled frequency puts that hazard at roughly once every 2 years here.

65 /100

Historical Activity Index

High historical activity

Rhea County, TN · 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 Moderate
12/25

21 declarations (1.0x state county average of 21)

Major Disaster Share High
18/25

15 of 21 declarations are major disasters (71%)

Hazard Diversity Very High
20/20

8 different disaster types declared in Rhea County

FEMA NRI 8-hazard radar - Rhea County

Rhea County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 25, Flood 25, Hurricane 8, Tornado 25, Wildfire 8, Drought 25, Heat Wave 8, Winter Storm 25. The simple mean of these eight displayed scores is 19 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 19 8-hazard mean
Rhea County NRI risk profile FIPS 47143 · displayed-hazard mean 19/100
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

71%

Major-heavy

NRI risk score

49

Relatively Low

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

How often does each hazard strike Rhea 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
Landslide Relatively Low roughly once every 2 years
Earthquake Relatively Low roughly once every 237 years
Strong Wind Relatively Moderate an average of 4.9 times per year
Riverine Flooding Relatively Low an average of 1.1 times per year
Lightning Relatively Moderate an average of 61 times per year
Cold Wave Relatively Low roughly once every 2 years
Tornado Relatively Low roughly once every 6 years
Wildfire Very Low roughly once every 525 years
Hurricane Very Low roughly once every 58 years
Winter Weather Relatively Low an average of 3.8 times per year
Drought Relatively Low 25 modeled event-days per year
Ice Storm Relatively Low roughly once every 2 years
Hail Relatively Low an average of 3.4 times per year
Heat Wave Very Low 1.7 modeled event-days 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 10
Flood 3
Winter Storm 2
Biological 2
Severe Ice Storm 1
Hurricane 1
Fire 1
Snowstorm 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Rhea County's record, 48% 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 - 15 71.4%

of all 21 declarations

Emergency - 5 23.8%

of all 21 declarations

Fire Management - 1 4.8%

of all 21 declarations

FEMA Declarations Timeline

Year Declarations
2026 2
2025 1
2023 2
2020 2
2019 1
2017 1
2015 1
2011 1
2005 2
2003 2
2002 1
1998 2
1993 1
1991 1
1973 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
4898 SEVERE WINTER STORM DR Winter Storm 2026-02-06
3635 SEVERE WINTER STORM EM Winter Storm 2026-01-24
3625 SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING EM Severe Storm 2025-04-02
4742 SEVERE STORMS, STRAIGHT-LINE WINDS, AND TORNADO DR Severe Storm 2023-09-27
4712 SEVERE STORMS, STRAIGHT-LINE WINDS, AND TORNADO DR Severe Storm 2023-05-17
4514 COVID-19 PANDEMIC DR Biological 2020-04-02
3473 COVID-19 EM Biological 2020-03-13
4427 SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES DR Flood 2019-04-17
4320 SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING DR Severe Storm 2017-06-23
4211 SEVERE WINTER STORM AND FLOODING DR Severe Ice Storm 2015-04-02
1974 SEVERE STORMS, TORNADOES, STRAIGHT-LINE WINDS, AND ASSOCIATED FLOODING DR Severe Storm 2011-05-01
3217 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-05
1568 SEVERE STORMS AND FLOODING DR Severe Storm 2004-10-07
1464 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2003-05-08
1456 SEVERE STORMS AND FLOODING DR Severe Storm 2003-03-20
2387 TN - CHATTANOOGA FIRE COMPLEX - 11/03/01 FM Fire 2001-11-03
1215 SEVERE STORMS, TORNADOES AND FLOODING DR Severe Storm 1998-04-20
1197 SEVERE STORMS AND FLOODING DR Severe Storm 1998-01-13
3095 SEVERE SNOWFALL, WINTER STORM EM Snowstorm 1993-03-14
889 SEVERE STORMS & FLOODING DR Flood 1991-01-04
Show 1 earlier declaration records
DR# Title Type Incident Date
366 HEAVY RAINS & FLOODING DR Flood 1973-03-21

Storm Events in Tennessee

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 6,558 22 58 $107.0M
Hail 1,690 0 0 $545.5K
Heat 1,343 9 15 $0
Flash Flood 1,264 55 3 $334.4M
Winter Weather 1,088 5 0 $261.0K

Source: NOAA Storm Events Database State-level aggregated data, 2015-2025

NFIP Flood Insurance Claims

Total Claims

82

Total Paid

$1.7M

Avg Per Claim

$20.6K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 49.2/100

Expected Annual Loss

Very Low

$13.5M/year

Social Vulnerability

Relatively Moderate

Community Resilience

Relatively Low

Hazard Risk Breakdown

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

Landslide risk is a function of slope, soil and water, so it is usually a SECOND-ORDER hazard: it is triggered by the rainfall, snowmelt, wildfire burn scars or seismic shaking that came first. That is why a county can carry high landslide exposure whose realized damage is recorded under a flood or storm declaration instead.

Worth noting for Rhea County: the model and the federal record do NOT point at the same hazard. Landslide carries the highest modeled rating (Relatively Low), 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

Rhea County's closest FEMA peer: Yates County, NY

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Rhea 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

Rhea County's NFIP claims file (82 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 Rhea County?
The most common disaster type in Rhea County is Severe Storm, with 10 declarations. Other disaster types include Flood (3), Winter Storm (2), Biological (2).
How does Rhea County's FEMA declaration record compare with the Tennessee average?
The typical Tennessee county has 21.4 FEMA declaration records; Rhea County has 21, or 2% fewer. Against the national county mean of 20.7, this county's total is 1% higher. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Rhea County received?
Rhea County has received 15 major disaster declarations, representing 71% of all 21 disaster declarations.
How many flood insurance claims has Rhea County filed?
Rhea County has 82 National Flood Insurance Program (NFIP) claims totaling $1.7M in payments, with an average of $20.6K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Rhea County?
No. In Rhea County, Landslide has the highest National Risk Index rating (Relatively Low), while Riverine Flooding leads Expected Annual Loss at about $8.5M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Rhea County?
The most active year for disaster declarations in Rhea County was 1998, with 2 declarations. The county has FEMA disaster data spanning 1973 to 2026.
What is the FEMA National Risk Index score for Rhea County?
According to the FEMA National Risk Index, Rhea County, Tennessee has an overall risk score of 49.2 out of 100 (Relatively Low). On social vulnerability the county rates Relatively Moderate; on community resilience, Relatively Low. The Expected Annual Loss (EAL) score is Very Low, representing $13.5M in annualized losses.
Which natural hazard poses the greatest risk to Rhea County?
Based on FEMA NRI data, the highest-risk natural hazard in Rhea County is Landslide (risk rating: Relatively Low). Other significant hazards include Earthquake (Relatively Low) and Strong Wind (Relatively Moderate). FEMA's modeled event frequency puts landslide here at roughly once every 2 years. FEMA derives these ratings from historical event frequency, the assets exposed, and the community's vulnerability profile.
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 Rhea County · vintage 2026-08-25 · Methodology · Tennessee profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events