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Pennsylvania · FEMA + NOAA + National Risk Index

Perry County, PA

20 FEMA disaster declarations (1972-2020), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Flood.

20
FEMA declarations
14
Major disasters
53
NRI risk · Relatively Low
Flood
Top hazard

The verdict

Two federal records point in the busier direction for Perry County. Its 20 FEMA declarations are 8% above the Pennsylvania county mean and exceed the count for 46% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it in the riskiest 47%, based on modeled expected annual loss, social vulnerability, and community resilience.

Riskiest 47%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
20
FEMA declarations vs 21 national county avg
749
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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How does Perry County compare?

Perry County vs. all counties in this dataset

FEMA disaster declarations, all-time

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 · 2026-08-03

Perry County's FEMA Risk Index score

FEMA National Risk Index composite score vs. the Pennsylvania county average

0/100100/100Pennsylvania avg67/10053.1/100
FEMA National Risk Index composite score vs. the Pennsylvania county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Perry County is led by Riverine Flooding (about $13.4M Expected Annual Loss, Historical Loss Ratio Relatively Moderate), 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 Perry County's hazard record show?

Reading the federal records together

FEMA's NFIP table contains a substantial paid-claim history for this county: 749 claims and $7.4M in payments. PlainHazard labels 500 or more claims a heavy registry record; that is a reporting bucket, not an official FEMA risk grade. The average paid claim was $9.9K. NFIP totals exclude uninsured flood losses and do not measure how many properties currently carry a policy.

The declaration register points in the busier direction. Perry County's 20 federal records stand 8% above the Pennsylvania county mean of 18.6. 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.

FEMA National Risk Index

This county carries a high composite score on FEMA's National Risk Index, 53.1/100, rated Relatively Low. Its Expected Annual Loss rating is Relatively Low (roughly $18.2M in annualized losses), and a Relatively Low social-vulnerability profile combined with Relatively High community resilience shapes how much of that raw exposure becomes realized harm. 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 1 years here.

Declaration frequency

The FEMA register is busy by both local and national comparisons. It contains 20 entries for Perry County, including 14 Major Disaster records, 8% above the Pennsylvania county mean. Across the 48-year span, that works out to 0.4 declarations a year. Flood leads the file with 7 entries. Declaration type records the federal action taken, not every assistance program approved.

58 /100

Historical Activity Index

High historical activity

Perry County, PA · 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 High
18/25

14 of 20 declarations are major disasters (70%)

Hazard Diversity High
13/20

5 different disaster types declared in Perry County

Historical Declaration Activity

Activity Band

High

vs. Pennsylvania Avg

+8%

State avg: 18.6

vs. National Avg

-3%

National avg: 20.7

Avg Per Year

0.4

Over 48 years

FEMA NRI 8-hazard radar - Perry County

Perry 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 8, Heat Wave 25, Winter Storm 48. The simple mean of these eight displayed scores is 22 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 22 8-hazard mean
Perry County NRI risk profile FIPS 42099 · displayed-hazard mean 22/100
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

53

Relatively Low

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

How often does each hazard strike Perry 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 1 years
Winter Weather Relatively Moderate an average of 12 times per year
Hurricane Relatively Low roughly once every 15 years
Heat Wave Relatively Low 4.3 modeled event-days per year
Strong Wind Relatively Moderate an average of 4.4 times per year
Riverine Flooding Relatively Low an average of 1.2 times per year
Avalanche Very Low roughly once every 100 years
Earthquake Very Low roughly once every 1,368 years
Lightning Relatively Low an average of 35 times per year
Tornado Relatively Low roughly once every 4 years
Wildfire Very Low roughly once every 9,264 years
Cold Wave Very Low an average of 1.2 times per year
Drought Very Low 0 modeled event-days per year
Ice Storm Very Low roughly once every 2 years
Hail Very Low an average of 2.1 times per year

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

Disaster Types

Flood 7
Snowstorm 4
Severe Storm 4
Hurricane 3
Biological 2

What Flood declarations mean here

Flood is the most frequent declaration type on Perry County's record, 35% of its declarations. Federal flood declarations cover two mechanisms that behave very differently: riverine flooding, which builds over days as a watershed drains and is usually forecast well in advance, and flash flooding, which can arrive in under an hour from rainfall that fell somewhere upstream.

Flood is also the one hazard class where a second federal dataset exists for the same events. The National Flood Insurance Program records what was actually paid on insured losses, so it measures a narrower thing than the declaration count: uninsured damage, and flooding outside mapped special flood hazard areas, never enters it. Reading the two together is more informative than either alone.

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 - 6 30.0%

of all 20 declarations

FEMA Declarations Timeline

Year Declarations
2020 2
2016 1
2013 1
2011 2
2010 1
2006 1
2005 1
2004 2
2003 1
1996 3
1994 1
1993 1
1977 1
1975 1
1972 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
4506 COVID-19 PANDEMIC DR Biological 2020-03-30
3441 COVID-19 EM Biological 2020-03-13
4267 SEVERE WINTER STORM AND SNOWSTORM DR Snowstorm 2016-03-23
3356 HURRICANE SANDY EM Hurricane 2012-10-29
4030 TROPICAL STORM LEE DR Flood 2011-09-12
3340 REMNANTS OF TROPICAL STORM LEE EM Flood 2011-09-08
1898 SEVERE WINTER STORMS AND SNOWSTORMS DR Snowstorm 2010-04-16
1649 SEVERE STORMS, FLOODING, AND MUDSLIDES DR Severe Storm 2006-06-30
3235 HURRICANE KATRINA EM Hurricane 2005-09-10
1557 TROPICAL DEPRESSION IVAN DR Hurricane 2004-09-19
1555 SEVERE STORMS AND FLOODING ASSOCIATED WITH TROPICAL DEPRESSION FRANCES DR Severe Storm 2004-09-19
3180 SNOW EM Severe Storm 2003-03-14
1138 FLOODING ASSOCIATED WITH TROPICAL DEPRESSION FRAN DR Flood 1996-09-13
1093 SEVERE STORMS AND FLOODING DR Flood 1996-01-21
1085 BLIZZARD OF 96 DR Snowstorm 1996-01-13
1015 SEVERE WINTER STORMS DR Severe Storm 1994-03-10
3105 SEVERE SNOWFALL & WINTER STORM EM Snowstorm 1993-03-16
523 SEVERE STORMS & FLOODING DR Flood 1976-10-20
485 SEVERE STORMS, HEAVY RAINS & FLOODING DR Flood 1975-09-26
340 TROPICAL STORM AGNES DR Flood 1972-06-23

Storm Events in Pennsylvania

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 9,976 18 114 $115.5M
Flash Flood 2,288 23 8 $463.2M
Winter Weather 1,670 23 268 $566.0K
Hail 1,400 0 0 $2.6M
Winter Storm 881 14 17 $2.9M

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

NFIP Flood Insurance Claims

Total Claims

749

Total Paid

$7.4M

Avg Per Claim

$9.9K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 53.1/100

Expected Annual Loss

Relatively Low

$18.2M/year

Social Vulnerability

Relatively Low

Community Resilience

Relatively High

Hazard Risk Breakdown

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

Perry County's closest FEMA peer: Simpson County, KY

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

Further reading for this county

Understanding disaster data

Perry County's NFIP claims file (749 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 Perry County?
The most common disaster type in Perry County is Flood, with 7 declarations. Other disaster types include Snowstorm (4), Severe Storm (4), Hurricane (3).
How does Perry County's FEMA declaration record compare with the Pennsylvania average?
FEMA lists 20 declaration records for Perry County. That is 8% above the Pennsylvania county mean of 18.6. 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 Perry County received?
Perry County has received 14 major disaster declarations, representing 70% of all 20 disaster declarations.
How many flood insurance claims has Perry County filed?
Perry County has 749 National Flood Insurance Program (NFIP) claims totaling $7.4M in payments, with an average of $9.9K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Perry County?
No. In Perry County, Landslide has the highest National Risk Index rating (Relatively Low), while Riverine Flooding leads Expected Annual Loss at about $13.4M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Perry County?
The most active year for disaster declarations in Perry County was 1996, with 3 declarations. The county has FEMA disaster data spanning 1972 to 2020.
What is the FEMA National Risk Index score for Perry County?
According to the FEMA National Risk Index, Perry County, Pennsylvania has an overall risk score of 53.1 out of 100 (Relatively Low). Social vulnerability here rates Relatively Low, while community resilience comes in at Relatively High. The Expected Annual Loss (EAL) score is Relatively Low, representing $18.2M in annualized losses.
Which natural hazard poses the greatest risk to Perry County?
Based on FEMA NRI data, the highest-risk natural hazard in Perry County is Landslide (risk rating: Relatively Low). Other significant hazards include Winter Weather (Relatively Moderate) and Hurricane (Relatively Low). 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.

What this means for Perry County

Perry County, PA has 20 federal declaration records, 8% more than the Pennsylvania county mean of 19; its history sits in PlainHazard's high activity band.

  • Within this above-state-average declaration file, major disaster leads with 14 of 20 records; the category describes past federal action, not the next likely hazard. Pennsylvania overview
  • The state benchmark and national rank point the same way: this count tops the Pennsylvania mean and the totals for 46% of 3,266 U.S. counties. Most-disaster rankings
  • The large NFIP claims file and FEMA declaration history measure different federal records; the guide explains where they overlap and where they do not. Disaster-data guide

An above-average declaration count records past federal responses; it does not predict the next event. Current warnings come from the National Weather Service and local emergency officials.

All federal data sources used on this page
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainHazard Editorial

Verify with FEMA → · Verify with FEMA NRI → · Verify with NOAA →

Every figure on PlainHazard is rendered directly from FEMA federal disaster data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or national statistics report, the data & editorial changelog, or report a data error.