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.

Ohio · FEMA + NOAA + National Risk Index

Greene County, OH

16 FEMA disaster declarations (1968-2020), with a FEMA National Risk Index rating of Relatively Low. Most common hazard: Severe Storm.

16
FEMA declarations
9
Major disasters
76
NRI risk · Relatively Low
Severe Storm
Top hazard

The verdict

Two federal records point in the busier direction for Greene County. Its 16 FEMA declarations are 9% above the Ohio county mean and exceed the count for 27% of the 3,266 counties in this registry. Separately, FEMA's National Risk Index places it in the riskiest 24%, based on modeled expected annual loss, social vulnerability, and community resilience.

Riskiest 24%
of U.S. counties for FEMA National Risk Index score
Relatively Low
FEMA National Risk Index rating
16
FEMA declarations vs 21 national county avg
153
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

How does Greene County compare?

Greene County vs. all counties in this dataset

FEMA disaster declarations, all-time

16 27th percentile higher than 27% 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

Greene County's FEMA Risk Index score

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

0/100100/100Ohio avg55/10075.7/100
FEMA National Risk Index composite score vs. the Ohio county average

Which hazard drives modeled loss here?

FEMA's modeled annual dollar loss for Greene County is led by Riverine Flooding (about $19.5M Expected Annual Loss, Historical Loss Ratio Relatively Moderate), while Cold Wave 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 Greene County's hazard record show?

Reading the federal records together

The NFIP claims register shows a middle-volume loss record here: 153 paid claims, totaling $1.4M. PlainHazard uses 50-499 claims for this descriptive band; FEMA does not publish it as a safety or coverage category. The $9.4K average describes payments on recorded claims only, leaving uninsured damage and properties without a claim outside the measure.

The declaration register points in the busier direction. Greene County's 16 federal records stand 9% above the Ohio county mean of 14.6. 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 sits among the highest-risk counties nationally on FEMA's National Risk Index, a composite score of 75.7/100 (Relatively Low). Expected Annual Loss is rated Relatively Low (roughly $41.6M in annualized losses). Social vulnerability reads Very Low and community resilience Very High, both critical modifiers of realized harm here. Of the 18 hazards FEMA models, Cold Wave stands out as the sharpest exposure here, rated Relatively High. FEMA's modeled frequency puts that hazard at an average of 3.9 times per year here, based on 75 historical events on record.

Declaration frequency

The FEMA register is busy by both local and national comparisons. It contains 16 entries for Greene County, including 9 Major Disaster records, 9% above the Ohio county mean. Across the 52-year span, that works out to 0.3 declarations a year. Severe Storm leads the file with 5 entries. Declaration type records the federal action taken, not every assistance program approved.

55 /100

Historical Activity Index

High historical activity

Greene County, OH · 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
12/30

16 OpenFEMA declarations, full ingest window (0.8x national county average)

County Disaster Density High
14/25

16 declarations (1.1x state county average of 15)

Major Disaster Share High
14/25

9 of 16 declarations are major disasters (56%)

Hazard Diversity Very High
15/20

6 different disaster types declared in Greene County

Historical Declaration Activity

Activity Band

High

vs. Ohio Avg

+9%

State avg: 14.6

vs. National Avg

-23%

National avg: 20.7

Avg Per Year

0.3

Over 52 years

FEMA NRI 8-hazard radar - Greene County

Greene County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 25, Flood 48, Hurricane 8, Tornado 48, Wildfire 8, Drought 25, Heat Wave 25, Winter Storm 70. The simple mean of these eight displayed scores is 32 of 100. Earthquake Flood Hurricane Tornado Wildfire Drought Heat Wave Winter Storm 32 8-hazard mean
Greene County NRI risk profile FIPS 39057 · displayed-hazard mean 32/100
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

16

Below median

Major Disaster share

56%

Major-heavy

NRI risk score

76

Relatively Low

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

How often does each hazard strike Greene 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
Cold Wave Relatively High an average of 3.9 times per year
Ice Storm Relatively High an average of 1.1 times per year
Strong Wind Relatively Moderate an average of 2.2 times per year
Tornado Relatively Moderate roughly once every 4 years
Earthquake Relatively Low roughly once every 668 years
Riverine Flooding Relatively Moderate an average of 2.1 times per year
Lightning Relatively Moderate an average of 48 times per year
Hail Relatively Moderate an average of 3.4 times per year
Winter Weather Relatively Moderate an average of 11 times per year
Heat Wave Relatively Low 4.8 modeled event-days per year
Landslide Very Low roughly once every 10 years
Drought Relatively Low 0.6 modeled event-days per year
Hurricane Very Low roughly once every 156 years
Wildfire Very Low roughly once every 32,982 years

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

Disaster Types

Severe Storm 5
Snowstorm 4
Biological 2
Tornado 2
Flood 2
Hurricane 1

What Severe Storm declarations mean here

Severe Storm is the most frequent declaration type on Greene County's record, 31% 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 - 9 56.3%

of all 16 declarations

Emergency - 7 43.8%

of all 16 declarations

FEMA Declarations Timeline

Year Declarations
2020 2
2019 1
2012 1
2009 1
2008 1
2005 2
2004 1
2003 1
2000 1
1989 1
1978 1
1977 1
1974 1
1968 1

Disaster Declarations

How the 16 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 16 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4507 COVID-19 PANDEMIC DR Biological 2020-03-31
3457 COVID-19 EM Biological 2020-03-13
4447 SEVERE STORMS, STRAIGHT-LINE WINDS, TORNADOES, FLOODING, LANDSLIDES, AND MUDSLIDE DR Tornado 2019-06-18
3346 SEVERE STORMS EM Severe Storm 2012-06-30
1805 SEVERE WIND STORM ASSOCIATED WITH TROPICAL DEPRESSION IKE DR Severe Storm 2008-10-24
3286 RECORD SNOW AND NEAR RECORD SNOW EM Snowstorm 2008-04-24
3250 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-13
3198 SNOW EM Snowstorm 2005-01-11
1556 SEVERE STORMS AND FLOODING DR Severe Storm 2004-09-19
1453 SEVERE WINTER STORM AND RECORD/NEAR RECORD SNOW DR Severe Storm 2003-03-14
1343 SEVERE STORMS AND TORNADO DR Severe Storm 2000-09-26
831 SEVERE STORMS & FLOODING DR Flood 1989-06-10
3055 BLIZZARDS & SNOWSTORMS EM Snowstorm 1978-01-26
3029 SNOWSTORMS EM Snowstorm 1977-02-02
421 TORNADOES DR Tornado 1974-04-04
243 HEAVY RAINS & FLOODING DR Flood 1968-06-05

Storm Events in Ohio

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 6,938 6 39 $60.4M
Winter Weather 2,101 7 42 $3.3M
Hail 1,749 0 0 $673.5K
Flood 1,607 9 0 $84.5M
Flash Flood 1,089 9 7 $112.2M

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

NFIP Flood Insurance Claims

Total Claims

153

Total Paid

$1.4M

Avg Per Claim

$9.4K

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

FEMA National Risk Index

Overall Risk

Relatively Low

Score: 75.7/100

Expected Annual Loss

Relatively Low

$41.6M/year

Social Vulnerability

Very Low

Community Resilience

Very High

Hazard Risk Breakdown

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

Cold Wave measures exposure to extreme cold rather than to snow. Its harm is concentrated in health effects, burst infrastructure and energy demand spikes, and it falls hardest where the building stock and the grid were not built with sustained cold in mind.

Worth noting for Greene County: the model and the federal record do NOT point at the same hazard. Cold Wave carries the highest modeled rating (Relatively High), 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

Greene County's closest FEMA peer: Moore County, NC

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

Further reading for this county

Understanding disaster data

Greene County's NFIP claims file (153 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 Greene County?
The most common disaster type in Greene County is Severe Storm, with 5 declarations. Other disaster types include Snowstorm (4), Biological (2), Tornado (2).
How does Greene County's FEMA declaration record compare with the Ohio average?
FEMA lists 16 declaration records for Greene County. That is 9% above the Ohio county mean of 14.6. Its count is also 23% 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 Greene County received?
Greene County has received 9 major disaster declarations, representing 56% of all 16 disaster declarations.
How many flood insurance claims has Greene County filed?
Greene County has 153 National Flood Insurance Program (NFIP) claims totaling $1.4M in payments, with an average of $9.4K per claim.
Does FEMA's top risk-rated hazard match the highest Expected Annual Loss in Greene County?
No. In Greene County, Cold Wave has the highest National Risk Index rating (Relatively High), while Riverine Flooding leads Expected Annual Loss at about $19.5M. FEMA's risk score and dollar-loss model use different inputs, so the leaders often differ.
What was the worst year for disasters in Greene County?
The most active year for disaster declarations in Greene County was 2005, with 2 declarations. The county has FEMA disaster data spanning 1968 to 2020.
What is the FEMA National Risk Index score for Greene County?
According to the FEMA National Risk Index, Greene County, Ohio has an overall risk score of 75.7 out of 100 (Relatively Low). On social vulnerability the county rates Very Low; on community resilience, Very High. The Expected Annual Loss (EAL) score is Relatively Low, representing $41.6M in annualized losses.
Which natural hazard poses the greatest risk to Greene County?
FEMA's NRI data points to Greene County as of the latest release is Cold Wave (risk rating: Relatively High). Other significant hazards include Ice Storm (Relatively High) and Strong Wind (Relatively Moderate). FEMA's modeled event frequency puts cold wave here at an average of 3.9 times per year, drawn from 75 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.

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 Greene County

Greene County, OH has 16 federal declaration records, 9% more than the Ohio county mean of 15; its history sits in PlainHazard's high activity band.

  • Within this above-state-average declaration file, major disaster leads with 9 of 16 records; the category describes past federal action, not the next likely hazard. Ohio overview
  • The state benchmark and national rank point the same way: this count tops the Ohio mean and the totals for 27% of 3,266 U.S. counties. Most-disaster rankings
  • Use the data guide to separate this mid-volume insurance-claims file from declaration counts and modeled NRI risk. 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.