PlainHazard

If you are in immediate danger, call 911.

The data below is historical (NOAA Storm Events / FEMA), not a live alert. For current warnings and evacuation orders, check the National Weather Service, Ready.gov, or FEMA.gov.

Virginia · FEMA + NOAA + National Risk Index

Alleghany County, VA

20 FEMA disaster declarations (1969-2026), with a FEMA National Risk Index rating of Very Low. Most common hazard: Hurricane.

20
FEMA declarations
13
Major disasters
38
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 2% below the Virginia county mean. FEMA's separate National Risk Index places the county safer than 38%; that score models loss and vulnerability rather than counting declarations.

Safer than 38%
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
213
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.

View my watchlist

FEMA OpenFEMA declaration desk

County FIPS 51005 · Alleghany County 20 declarations · rank 1723/3,266

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

  • DECL-HEAVY 20
  • MAJOR-MID 65%
  • RANK-LOWER #1,723
  • PHOTO-FINISH Monona
  • NRI-LOW Very Low
  • ACT-HIGH High
  • TYPE-LEAD Hurricane
  • VS-ST-BELOW -2%

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

FEMA Disaster Declarations Summaries v2 filing stamps for this county register. Read with this county → · Virginia 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 1723 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

0/100100/100Virginia avg33/10038.1/100
FEMA National Risk Index composite score vs. the Virginia county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Alleghany County is led by Riverine Flooding (about $7.3M Expected Annual Loss, Historical Loss Ratio Relatively Moderate), while Strong Wind 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 Alleghany County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 213 paid claims, totaling $2.9M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $13.6K average describes payments on recorded claims only, leaving uninsured damage and properties without a claim outside the measure.

Start with the state benchmark: a Virginia county averages 20.4 federal declaration records, while Alleghany County has 20. 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 38.1/100 for this county (Very Low rating). Expected Annual Loss comes in at Very Low (roughly $10.8M in annualized losses). Social vulnerability (Relatively Moderate) and community resilience (Relatively Moderate) both factor into how that raw exposure plays out on the ground. Of the 18 hazards FEMA models, Strong Wind stands out as the sharpest exposure here, rated Relatively High. FEMA's modeled frequency puts that hazard at an average of 2.4 times per year here, based on 91 historical events on record.

60 /100

Historical Activity Index

High historical activity

Alleghany County, VA · 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 (1.0x state county average of 20)

Major Disaster Share High
16/25

13 of 20 declarations are major disasters (65%)

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 8, Tornado 8, Wildfire 8, Drought 8, Heat Wave 8, Winter Storm 25. The simple mean of these eight displayed scores is 12 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 12 8-hazard mean
Alleghany County NRI risk profile FIPS 51005 · displayed-hazard mean 12/100
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

65%

Major-heavy

NRI risk score

38

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
Strong Wind Relatively High an average of 2.4 times per year
Landslide Relatively Low an average of 1.2 times per year
Avalanche Relatively Low roughly once every 100 years
Lightning Relatively Moderate an average of 42 times per year
Riverine Flooding Relatively Low an average of 1.1 times per year
Cold Wave Relatively Low an average of 4.9 times per year
Hurricane Very Low roughly once every 46 years
Winter Weather Relatively Low an average of 13 times per year
Earthquake Very Low roughly once every 1,054 years
Drought Very Low 1.6 modeled event-days per year
Wildfire Very Low roughly once every 926 years
Hail Very Low an average of 3 times per year
Ice Storm Very Low roughly once every 2 years
Tornado Very Low roughly once every 20 years
Heat Wave Very Low 0.1 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

Hurricane 5
Severe Storm 4
Snowstorm 4
Flood 3
Biological 2
Winter Storm 1
Drought 1

What Hurricane declarations mean here

Hurricane is the most frequent declaration type on Alleghany County's federal record, 25% 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).

Major Disaster - 13 65.0%

of all 20 declarations

Emergency - 7 35.0%

of all 20 declarations

FEMA Declarations Timeline

Year Declarations
2026 1
2020 2
2018 1
2013 1
2012 1
2010 1
2006 1
2005 2
2000 1
1996 3
1994 1
1993 1
1986 1
1977 1
1972 1
Show 1 earlier declaration years
1969 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
3631 SEVERE WINTER STORM EM Winter Storm 2026-01-23
4512 COVID-19 PANDEMIC DR Biological 2020-04-02
3448 COVID-19 EM Biological 2020-03-13
3403 HURRICANE FLORENCE EM Hurricane 2018-09-11
3359 HURRICANE SANDY EM Hurricane 2012-10-29
4072 SEVERE STORMS AND STRAIGHT-LINE WINDS DR Severe Storm 2012-07-27
1874 SEVERE WINTER STORM AND SNOWSTORM DR Snowstorm 2010-02-16
1655 SEVERE STORMS, TORNADOES, AND FLOODING DR Severe Storm 2006-07-13
3240 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-12
1570 SEVERE STORMS AND FLOODING FROM THE REMANANTS OF HURRICANE JEANNE DR Severe Storm 2004-10-18
1318 SEVERE WINTER STORMS DR Severe Storm 2000-02-28
1135 HURRICANE FRAN AND ASSOCIATED SEVERE STORM COND DR Hurricane 1996-09-06
1098 FLOODING, HIGH WINDS, AND WIND DRIVEN RAIN DR Flood 1996-01-27
1086 BLIZZARD OF 96 (SEVERE SNOW STORM) DR Snowstorm 1996-01-13
1014 SEVERE ICE STORMS, FLOODING DR Snowstorm 1994-03-10
3112 SEVERE WINTER STORM EM Snowstorm 1993-03-25
755 SEVERE STORMS & FLOODING DR Flood 1985-11-09
3046 DROUGHT EM Drought 1977-07-23
339 TROPICAL STORM AGNES DR Flood 1972-06-23
274 SEVERE STORMS & FLOODING DR Hurricane 1969-08-23

Storm Events in Virginia

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 8,940 13 31 $123.1M
Flood 2,300 4 0 $85.1M
Winter Weather 2,049 6 32 $902.0K
Flash Flood 1,942 13 4 $244.2M
Heavy Rain 1,566 0 0 $2.5M

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

NFIP Flood Insurance Claims

Total Claims

213

Total Paid

$2.9M

Avg Per Claim

$13.6K

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 38.1/100

Expected Annual Loss

Very Low

$10.8M/year

Social Vulnerability

Relatively Moderate

Community Resilience

Relatively Moderate

Hazard Risk Breakdown

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

Strong Wind covers damaging non-thunderstorm, non-tornadic wind, the kind produced by steep pressure gradients and downslope events. It is a broad, frequent, low-drama hazard: roofs, signage, power lines and high-profile vehicles, spread across a wide area rather than concentrated on a path.

Worth noting for Alleghany County: the model and the federal record do NOT point at the same hazard. Strong Wind carries the highest modeled rating (Relatively High), 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: Fresno County, CA

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

Understanding disaster data

Alleghany County's NFIP claims file (213 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 Alleghany County?
The most common disaster type in Alleghany County is Hurricane, with 5 declarations. Other disaster types include Severe Storm (4), Snowstorm (4), Flood (3).
How does Alleghany County's FEMA declaration record compare with the Virginia average?
The typical Virginia county has 20.4 FEMA declaration records; Alleghany County has 20, or 2% 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 13 major disaster declarations, representing 65% of all 20 disaster declarations.
How many flood insurance claims has Alleghany County filed?
Alleghany County has 213 National Flood Insurance Program (NFIP) claims totaling $2.9M in payments, with an average of $13.6K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Alleghany County?
No. In Alleghany County, Strong Wind has the highest National Risk Index rating (Relatively High), while Riverine Flooding leads Expected Annual Loss at about $7.3M. 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 1996, with 3 declarations. The county has FEMA disaster data spanning 1969 to 2026.
What is the FEMA National Risk Index score for Alleghany County?
According to the FEMA National Risk Index, Alleghany County, Virginia has an overall risk score of 38.1 out of 100 (Very Low). Social vulnerability here rates Relatively Moderate, while community resilience comes in at Relatively Moderate. The Expected Annual Loss (EAL) score is Very Low, representing $10.8M 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 Strong Wind (risk rating: Relatively High). Other significant hazards include Landslide (Relatively Low) and Avalanche (Relatively Low). FEMA's modeled event frequency puts strong wind here at an average of 2.4 times per year, drawn from 91 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 Alleghany County · vintage 2026-08-25 · Methodology · Virginia profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events