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Tennessee · FEMA + NOAA + National Risk Index

Grainger County, TN

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

20
FEMA declarations
14
Major disasters
19
NRI risk · Very Low
Severe Storm
Top hazard

The verdict

Grainger County has a nationally busy FEMA history: 20 declarations, more than 46% of counties in this registry. But the state comparison tempers that reading: the total is 7% below the Tennessee county mean. FEMA's separate National Risk Index places the county safer than 19%; that score models loss and vulnerability rather than counting declarations.

Safer than 19%
of U.S. counties for FEMA National Risk Index score
Very Low
FEMA National Risk Index rating
20
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 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 47057 · Grainger County 20 declarations · rank 1653/3,266

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

  • DECL-HEAVY 20
  • MAJOR-MID 70%
  • RANK-LOWER #1,653
  • PHOTO-FINISH Monona
  • NRI-LOW Very Low
  • ACT-HIGH High
  • TYPE-LEAD Severe Storm
  • VS-ST-BELOW -7%

Nearest declaration peer: Monona, IA (0 declaration gap)

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

Grainger County in the declaration-count neighbourhood

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

declarations

What this shows Grainger County carries 20 FEMA declaration records, ranked 1653 of 3,266 counties in this registry.

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

How Grainger County's FEMA declaration count compares nationally

Grainger County vs. all counties in this dataset

FEMA disaster declarations, all-time · Grainger County

20 46th percentile higher than 46% 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

Grainger County's FEMA Risk Index score

0/100100/100Tennessee avg53/10018.6/100
FEMA National Risk Index composite score vs. the Tennessee county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Grainger County is led by Riverine Flooding (about $2.9M Expected Annual Loss, Historical Loss Ratio Relatively High), while Landslide carries the highest National Risk Index rating (Relatively Moderate). 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 Grainger County's hazard record show?

FEMA National Risk Index

This county's FEMA National Risk Index composite lands at 18.6/100 (Very Low), a modest reading against the rest of the country. Expected Annual Loss is rated Very Low (roughly $5.2M in annualized losses), tempered or compounded by a Relatively High social-vulnerability score and Very Low community-resilience score. Among the 18 modeled hazards, Landslide carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at an average of 1.1 times per year here.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 2 claims and $24.5K 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 Tennessee county averages 21.4 federal declaration records, while Grainger County has 20. The gap is 7% 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.

64 /100

Historical Activity Index

High historical activity

Grainger 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) Moderate
14/30

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

County Disaster Density Moderate
12/25

20 declarations (0.9x state county average of 21)

Major Disaster Share High
18/25

14 of 20 declarations are major disasters (70%)

Hazard Diversity Very High
20/20

10 different disaster types declared in Grainger County

FEMA NRI 8-hazard radar - Grainger County

Grainger County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 25, Flood 8, Hurricane 8, Tornado 25, Wildfire 8, Drought 25, Heat Wave 8, Winter Storm 25. The simple mean of these eight displayed scores is 17 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 17 8-hazard mean
Grainger County NRI risk profile FIPS 47057 · displayed-hazard mean 17/100
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

20

Above median

Major Disaster share

70%

Major-heavy

NRI risk score

19

Very Low

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

How often does each hazard strike Grainger 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 Moderate an average of 1.1 times per year
Earthquake Relatively Low roughly once every 245 years
Wildfire Very Low roughly once every 448 years
Strong Wind Relatively Low an average of 5 times per year
Lightning Relatively Low an average of 52 times per year
Drought Relatively Low 16 modeled event-days per year
Tornado Relatively Low roughly once every 13 years
Hail Relatively Low an average of 3 times per year
Ice Storm Relatively Low roughly once every 4 years
Riverine Flooding Very Low roughly once every 2 years
Winter Weather Relatively Low an average of 5.1 times per year
Cold Wave Relatively Low roughly once every 2 years
Hurricane Very Low roughly once every 174 years
Heat Wave Very Low 0.5 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 6
Flood 4
Winter Storm 2
Biological 2
Tropical Storm 1
Tornado 1
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 Grainger County's record, 30% 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 70.0%

of all 20 declarations

Emergency - 5 25.0%

of all 20 declarations

Fire Management - 1 5.0%

of all 20 declarations

FEMA Declarations Timeline

Year Declarations
2026 2
2025 2
2021 1
2020 2
2019 1
2015 1
2011 2
2005 1
2003 1
2002 1
2001 1
1998 1
1994 1
1993 1
1984 1
Show 1 earlier declaration years
1973 1

Disaster Declarations

How the 20 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 20 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
4832 TROPICAL STORM HELENE DR Tropical Storm 2024-10-02
4601 SEVERE STORMS, TORNADOES, AND FLOODING DR Tornado 2021-05-08
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
4211 SEVERE WINTER STORM AND FLOODING DR Severe Ice Storm 2015-04-02
4005 SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, AND DR Severe Storm 2011-07-20
1965 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2011-03-31
3217 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-05
1456 SEVERE STORMS AND FLOODING DR Severe Storm 2003-03-20
1408 SEVERE STORMS AND FLOODING DR Severe Storm 2002-04-05
2348 TN-GREENEVILLE FIRE COMPLEX-11/03/00 FM Fire 2000-11-03
1215 SEVERE STORMS, TORNADOES AND FLOODING DR Severe Storm 1998-04-20
1022 EXTENSIVE RAINFALL AND FLASH FLOODING DR Flood 1994-04-14
3095 SEVERE SNOWFALL, WINTER STORM EM Snowstorm 1993-03-14
708 SEVERE STORMS & FLOODING DR Flood 1984-05-25
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 Grainger 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

2

Total Paid

$24.5K

Avg Per Claim

$12.3K

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 18.6/100

Expected Annual Loss

Very Low

$5.2M/year

Social Vulnerability

Relatively High

Community Resilience

Very Low

Hazard Risk Breakdown

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

Grainger County's closest FEMA peer: Buena Vista (city), VA

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Grainger 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 20 FEMA declarations, Grainger 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 Grainger County?
The most common disaster type in Grainger County is Severe Storm, with 6 declarations. Other disaster types include Flood (4), Winter Storm (2), Biological (2).
How does Grainger County's FEMA declaration record compare with the Tennessee average?
The typical Tennessee county has 21.4 FEMA declaration records; Grainger County has 20, or 7% fewer. Against the national county mean of 20.7, this county's total is 3% lower. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Grainger County received?
Grainger County has received 14 major disaster declarations, representing 70% of all 20 disaster declarations.
How many flood insurance claims has Grainger County filed?
Grainger County has 2 National Flood Insurance Program (NFIP) claims totaling $24.5K in payments, with an average of $12.3K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Grainger County?
No. In Grainger County, Landslide has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $2.9M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Grainger County?
The most active year for disaster declarations in Grainger County was 2011, with 2 declarations. The county has FEMA disaster data spanning 1973 to 2026.
What is the FEMA National Risk Index score for Grainger County?
According to the FEMA National Risk Index, Grainger County, Tennessee has an overall risk score of 18.6 out of 100 (Very Low). On social vulnerability the county rates Relatively High; on community resilience, Very Low. The Expected Annual Loss (EAL) score is Very Low, representing $5.2M in annualized losses.
Which natural hazard poses the greatest risk to Grainger County?
The top hazard flagged by FEMA's NRI for Grainger County is Landslide (risk rating: Relatively Moderate). Other significant hazards include Earthquake (Relatively Low) and Wildfire (Very Low). FEMA's modeled event frequency puts landslide here at an average of 1.1 times per year. 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 Grainger County · vintage 2026-08-25 · Methodology · Tennessee profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events