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South Dakota · FEMA + NOAA + National Risk Index

Miner County, SD

20 FEMA disaster declarations (1976-2024), with a FEMA National Risk Index rating of Very Low. Most common hazard: Severe Storm.

20
FEMA declarations
17
Major disasters
3
NRI risk · Very Low
Severe Storm
Top hazard

The verdict

Two federal records point in the busier direction for Miner County. Its 20 FEMA declarations are 5% above the South Dakota county mean and exceed the count for 46% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it safer than 3%, based on modeled expected annual loss, social vulnerability, and community resilience.

Safer than 3%
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
8
severe storm declarations, the most common hazard here

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 46097 · Miner County 20 declarations · rank 1728/3,266

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

  • DECL-HEAVY 20
  • MAJOR-HEAVY 85%
  • RANK-LOWER #1,728
  • PHOTO-FINISH Monona
  • NRI-LOW Very Low
  • ACT-HIGH High
  • TYPE-LEAD Severe Storm
  • VS-ST-ABOVE +5%

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

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

Miner County in the declaration-count neighbourhood

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

declarations

What this shows Miner County carries 20 FEMA declaration records, ranked 1728 of 3,266 counties in this registry.

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

How Miner County's FEMA declaration count compares nationally

Miner County vs. all counties in this dataset

FEMA disaster declarations, all-time · Miner 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

Miner County's FEMA Risk Index score

0/100100/100South Dakota avg27/1003.4/100
FEMA National Risk Index composite score vs. the South Dakota county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Miner County is led by Riverine Flooding (about $1.1M Expected Annual Loss, Historical Loss Ratio Relatively High), while Drought 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 Miner County's hazard record show?

FEMA National Risk Index

This county sits at the very bottom of FEMA's National Risk Index nationally, a composite score of 3.4/100 (rated Very Low). Projected losses are minimal, Expected Annual Loss reads Very Low (roughly $4.7M in annualized losses), and the county's exposure is shaped by a Very Low social-vulnerability profile and Very High community resilience. Among the 18 modeled hazards, Drought carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at 11 modeled event-days per year here, based on 266 historical events on record.

Reading the federal records together

No paid-claim row for this county appears in the NFIP county table used by PlainHazard. That absence is not evidence that flooding never occurred: the register observes claims under federal flood-insurance policies, not uninsured losses, emergency reports, or every flood outside the program. The FEMA declaration history below is therefore the available federal-action record on this page.

The declaration register points in the busier direction. Miner County's 20 federal records stand 5% above the South Dakota county mean of 19.0. 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.

63 /100

Historical Activity Index

High historical activity

Miner County, SD · 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 High
13/25

20 declarations (1.1x state county average of 19)

Major Disaster Share Very High
21/25

17 of 20 declarations are major disasters (85%)

Hazard Diversity Very High
15/20

6 different disaster types declared in Miner County

FEMA NRI 8-hazard radar - Miner County

Miner County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 8, Hurricane 0, Tornado 25, Wildfire 8, Drought 48, Heat Wave 8, Winter Storm 25. The simple mean of these eight displayed scores is 16 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 16 8-hazard mean
Miner County NRI risk profile FIPS 46097 · displayed-hazard mean 16/100
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

85%

Mostly major

NRI risk score

3

Very Low

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

How often does each hazard strike Miner 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 Moderate 11 modeled event-days per year
Ice Storm Relatively Low roughly once every 2 years
Wildfire Very Low roughly once every 1,559 years
Hail Relatively Low an average of 5.3 times per year
Winter Weather Relatively Low an average of 18 times per year
Cold Wave Relatively Low an average of 9.7 times per year
Tornado Relatively Low roughly once every 3 years
Heat Wave Very Low 5.1 modeled event-days per year
Strong Wind Very Low an average of 3.6 times per year
Earthquake Very Low roughly once every 2,841 years
Landslide Very Low roughly once every 18 years
Riverine Flooding Very Low roughly once every 3 years
Lightning Very Low an average of 36 times 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 8
Flood 7
Biological 2
Coastal Storm 1
Snowstorm 1
Drought 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Miner County's record, 40% 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 - 17 85.0%

of all 20 declarations

Emergency - 3 15.0%

of all 20 declarations

FEMA Declarations Timeline

Year Declarations
2024 1
2022 1
2020 3
2019 1
2011 1
2010 2
2007 1
2006 1
2005 1
1997 2
1996 1
1995 1
1993 1
1992 1
1984 1
Show 1 earlier declaration years
1976 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
4807 SEVERE STORMS, STRAIGHT-LINE WINDS, AND FLOODING DR Flood 2024-08-15
4656 SEVERE STORM, STRAIGHT-LINE WINDS, TORNADOES, AND FLOODING DR Severe Storm 2022-06-29
4527 COVID-19 PANDEMIC DR Biological 2020-04-05
3475 COVID-19 EM Biological 2020-03-13
4469 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2019-11-18
4440 SEVERE WINTER STORM, SNOWSTORM, AND FLOODING DR Flood 2019-06-07
1984 FLOODING DR Flood 2011-05-13
1938 SEVERE STORMS AND FLOODING DR Severe Storm 2010-09-23
1915 FLOODING DR Flood 2010-05-13
1702 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2007-05-22
1620 SEVERE WINTER STORM DR Severe Storm 2005-12-20
3234 HURRICANE KATRINA EVACUATION EM Coastal Storm 2005-09-10
1173 SEVERE FLOODING, SEVER WINTER STORMS,HEAVY RAINS HIGH WINDS DR Flood 1997-04-07
1156 SEVERE WINTER STORMS AND BLIZZARD CONDITIONS DR Severe Storm 1997-01-10
1075 SEVERE WINTER STORM DR Snowstorm 1996-01-05
1052 FLOODING DR Flood 1995-05-26
999 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1993-07-19
948 SEVERE STORMS, TORNADOES & FLOODING DR Severe Storm 1992-07-02
717 SEVERE STORMS & FLOODING DR Flood 1984-07-19
3015 DROUGHT EM Drought 1976-06-17

Storm Events in South Dakota

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 5,388 7 21 $10.7M
Hail 4,801 0 3 $4.5M
High Wind 2,277 0 1 $35.0K
Winter Weather 2,125 20 50 $133.0K
Flood 1,523 5 0 $196.2M

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 3.4/100

Expected Annual Loss

Very Low

$4.7M/year

Social Vulnerability

Very Low

Community Resilience

Very High

Hazard Risk Breakdown

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

Miner County's closest FEMA peer: Pennington County, MN

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Miner 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, Miner 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 Miner County?
The most common disaster type in Miner County is Severe Storm, with 8 declarations. Other disaster types include Flood (7), Biological (2), Coastal Storm (1).
How does Miner County's FEMA declaration record compare with the South Dakota average?
FEMA lists 20 declaration records for Miner County. That is 5% above the South Dakota county mean of 19.0. Its count is also 3% below 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 Miner County received?
Miner County has received 17 major disaster declarations, representing 85% of all 20 disaster declarations.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Miner County?
No. In Miner County, Drought has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $1.1M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Miner County?
The most active year for disaster declarations in Miner County was 2020, with 3 declarations. The county has FEMA disaster data spanning 1976 to 2024.
What is the FEMA National Risk Index score for Miner County?
According to the FEMA National Risk Index, Miner County, South Dakota has an overall risk score of 3.4 out of 100 (Very Low). On social vulnerability the county rates Very Low; on community resilience, Very High. The Expected Annual Loss (EAL) score is Very Low, representing $4.7M in annualized losses.
Which natural hazard poses the greatest risk to Miner County?
Based on FEMA NRI data, the highest-risk natural hazard in Miner County is Drought (risk rating: Relatively Moderate). Other significant hazards include Ice Storm (Relatively Low) and Wildfire (Very Low). FEMA's modeled event frequency puts drought here at 11 modeled event-days per year, drawn from 266 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.

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 Miner County · vintage 2026-08-25 · Methodology · South Dakota profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events