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North Carolina · FEMA + NOAA + National Risk Index

Alleghany County, NC

20 FEMA disaster declarations (1989-2026), with a FEMA National Risk Index rating of Very Low. Most common hazard: Hurricane.

20
FEMA declarations
10
Major disasters
35
NRI risk · Very Low
Hurricane
Top hazard

The verdict

Alleghany 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 17% below the North Carolina county mean. FEMA's separate National Risk Index places the county safer than 35%; that score models loss and vulnerability rather than counting declarations.

Safer than 35%
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
13
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 37005 · Alleghany County 20 declarations · rank 1716/3,266

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

  • DECL-HEAVY 20
  • MAJOR-MID 50%
  • RANK-LOWER #1,716
  • PHOTO-FINISH Monona
  • NRI-LOW Very Low
  • ACT-HIGH High
  • TYPE-LEAD Hurricane
  • VS-ST-BELOW -17%

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

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

Alleghany County in the declaration-count neighbourhood

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

declarations

What this shows Alleghany County carries 20 FEMA declaration records, ranked 1716 of 3,266 counties in this registry.

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

How Alleghany County's FEMA declaration count compares nationally

Alleghany County vs. all counties in this dataset

FEMA disaster declarations, all-time · Alleghany 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

Alleghany County's FEMA Risk Index score

0/100100/100North Carolina avg67/10034.7/100
FEMA National Risk Index composite score vs. the North Carolina county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Alleghany County is led by Riverine Flooding (about $3.0M 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 Alleghany County's hazard record show?

FEMA National Risk Index

FEMA's data shows an elevated National Risk Index composite of 34.7/100 for this county (Very Low rating). Expected Annual Loss comes in at Very Low (roughly $6.6M in annualized losses). Social vulnerability (Very High) and community resilience (Very Low) both factor into how that raw exposure plays out on the ground. 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 roughly once every 1 years here.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 13 claims and $475.4K 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 North Carolina county averages 24.0 federal declaration records, while Alleghany County has 20. The gap is 17% 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.

55 /100

Historical Activity Index

High historical activity

Alleghany County, NC · 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
10/25

20 declarations (0.8x state county average of 24)

Major Disaster Share High
13/25

10 of 20 declarations are major disasters (50%)

Hazard Diversity Very High
18/20

7 different disaster types declared in Alleghany County

FEMA NRI 8-hazard radar - Alleghany County

Alleghany County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 25, Hurricane 25, Tornado 25, Wildfire 8, Drought 48, Heat Wave 0, Winter Storm 48. The simple mean of these eight displayed scores is 23 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 23 8-hazard mean
Alleghany County NRI risk profile FIPS 37005 · displayed-hazard mean 23/100
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

50%

Major-heavy

NRI risk score

35

Very Low

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

How often does each hazard strike Alleghany 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 roughly once every 1 years
Drought Relatively Moderate 15 modeled event-days per year
Ice Storm Relatively Moderate roughly once every 1 years
Cold Wave Relatively Moderate an average of 4.6 times per year
Hurricane Relatively Low roughly once every 31 years
Wildfire Very Low roughly once every 819 years
Earthquake Very Low roughly once every 660 years
Riverine Flooding Relatively Low roughly once every 1 years
Lightning Relatively Low an average of 48 times per year
Tornado Relatively Low roughly once every 17 years
Strong Wind Relatively Low an average of 2.7 times per year
Winter Weather Very Low an average of 12 times per year
Hail Very Low an average of 4.3 times per year

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

Disaster Types

Hurricane 9
Tropical Storm 3
Severe Storm 2
Biological 2
Snowstorm 2
Winter Storm 1
Flood 1

What Hurricane declarations mean here

Hurricane is the most frequent declaration type on Alleghany County's federal record, 45% of its declarations. Atlantic tropical systems run on a defined season, 1 June to 30 November, with most activity concentrated between August and October; Pacific and territorial basins run on their own calendars. A single named storm routinely produces one declaration number covering a long corridor of counties at once, well inland as well as on the coast, which is why an affected county's count can jump by several in one year without several separate events having occurred.

One practical distinction matters when reading these records: a tropical declaration usually bundles wind, storm surge and inland rainfall flooding under a single incident, but the insurance behind them is split. Wind damage falls to property insurers, while flood and surge damage is covered only under a separate National Flood Insurance Program policy. That is why a county can show heavy declaration activity and a comparatively small NFIP claims record, or the reverse.

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).

Emergency - 10 50.0%

of all 20 declarations

Major Disaster - 10 50.0%

of all 20 declarations

FEMA Declarations Timeline

Year Declarations
2026 1
2024 3
2023 1
2021 1
2020 3
2019 1
2018 2
2013 1
2010 1
2005 1
2004 2
1996 1
1993 1
1989 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
3637 SEVERE WINTER STORM EM Winter Storm 2026-01-24
4827 TROPICAL STORM HELENE DR Tropical Storm 2024-09-28
3617 HURRICANE HELENE EM Tropical Storm 2024-09-26
3608 TROPICAL STORM DEBBY EM Tropical Storm 2024-08-06
3586 HURRICANE IAN EM Hurricane 2022-10-01
4588 TROPICAL STORM ETA DR Severe Storm 2021-03-03
3534 HURRICANE ISAIAS EM Hurricane 2020-08-02
4487 COVID-19 PANDEMIC DR Biological 2020-03-25
3471 COVID-19 EM Biological 2020-03-13
3423 HURRICANE DORIAN EM Hurricane 2019-09-03
4393 HURRICANE FLORENCE DR Hurricane 2018-09-14
3401 HURRICANE FLORENCE EM Hurricane 2018-09-10
4146 SEVERE STORMS, FLOODING, LANDSLIDES, AND MUDSLIDES DR Flood 2013-09-25
1871 SEVERE WINTER STORMS AND FLOODING DR Severe Storm 2010-02-02
3222 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-05
1553 HURRICANE IVAN DR Hurricane 2004-09-18
1546 TROPICAL STORM FRANCES DR Hurricane 2004-09-10
1087 BLIZZARD OF 96 DR Snowstorm 1996-01-13
3110 SEVERE SNOWFALL & WINTER STORM EM Snowstorm 1993-03-17
844 HURRICANE HUGO DR Hurricane 1989-09-25

Storm Events in North Carolina

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 7,123 11 60 $62.9M
Flash Flood 1,881 105 6 $2.3B
Hail 1,623 0 0 $122.5M
Winter Weather 1,272 6 2 $425.0K
Winter Storm 743 7 0 $10.7M

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

NFIP Flood Insurance Claims

Total Claims

13

Total Paid

$475.4K

Avg Per Claim

$36.6K

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 34.7/100

Expected Annual Loss

Very Low

$6.6M/year

Social Vulnerability

Very High

Community Resilience

Very Low

Hazard Risk Breakdown

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

Alleghany County's closest FEMA peer: Howard County, TX

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Alleghany 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, Alleghany 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 Alleghany County?
The most common disaster type in Alleghany County is Hurricane, with 9 declarations. Other disaster types include Tropical Storm (3), Severe Storm (2), Biological (2).
How does Alleghany County's FEMA declaration record compare with the North Carolina average?
The typical North Carolina county has 24.0 FEMA declaration records; Alleghany County has 20, or 17% 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 Alleghany County received?
Alleghany County has received 10 major disaster declarations, representing 50% of all 20 disaster declarations.
How many flood insurance claims has Alleghany County filed?
Alleghany County has 13 National Flood Insurance Program (NFIP) claims totaling $475.4K in payments, with an average of $36.6K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Alleghany County?
No. In Alleghany County, Landslide has the highest National Risk Index rating (Relatively Moderate), while Riverine Flooding leads Expected Annual Loss at about $3.0M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Alleghany County?
The most active year for disaster declarations in Alleghany County was 2020, with 3 declarations. The county has FEMA disaster data spanning 1989 to 2026.
What is the FEMA National Risk Index score for Alleghany County?
According to the FEMA National Risk Index, Alleghany County, North Carolina has an overall risk score of 34.7 out of 100 (Very Low). The county's social vulnerability rating is Very High and community resilience is Very Low. The Expected Annual Loss (EAL) score is Very Low, representing $6.6M in annualized losses.
Which natural hazard poses the greatest risk to Alleghany County?
The top hazard flagged by FEMA's NRI for Alleghany County is Landslide (risk rating: Relatively Moderate). Other significant hazards include Drought (Relatively Moderate) and Ice Storm (Relatively Moderate). FEMA's modeled event frequency puts landslide here at roughly once every 1 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 Alleghany County · vintage 2026-08-25 · Methodology · North Carolina profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events