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Florida · FEMA + NOAA + National Risk Index

Jefferson County, FL

39 FEMA disaster declarations (1973-2024), with a FEMA National Risk Index rating of Very Low. Most common hazard: Hurricane.

39
FEMA declarations
25
Major disasters
39
NRI risk · Very Low
Hurricane
Top hazard

The verdict

Jefferson County has a nationally busy FEMA history: 39 declarations, more than 96% of counties in this registry. But the state comparison tempers that reading: the total is 3% below the Florida county mean. FEMA's separate National Risk Index places the county safer than 39%; that score models loss and vulnerability rather than counting declarations.

Safer than 39%
of U.S. counties for FEMA National Risk Index score
Very Low
FEMA National Risk Index rating
39
FEMA declarations vs 21 national county avg
18
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 12065 · Jefferson County 39 declarations · rank 120/3,266

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

  • DECL-HEAVY 39
  • MAJOR-MID 64%
  • RANK-UPPER #120
  • PHOTO-FINISH Canadian
  • NRI-LOW Very Low
  • ACT-HIGH High
  • TYPE-LEAD Hurricane
  • VS-ST-BELOW -3%

Nearest declaration peer: Canadian, OK (0 declaration gap)

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

Jefferson County among high-volume declaration counties

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

declarations

What this shows Jefferson County carries 39 FEMA declaration records, ranked 120 of 3,266 counties in this registry.

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

Where Jefferson County ranks in the national declaration registry

Jefferson County vs. high-volume counties in this registry

FEMA disaster declarations, all-time · Jefferson County

39 Top 4% higher than 96% 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

Jefferson County's FEMA Risk Index score

0/100100/100Florida avg76/10039/100
FEMA National Risk Index composite score vs. the Florida county average

What does Jefferson County's hazard record show?

FEMA National Risk Index

FEMA's data shows an elevated National Risk Index composite of 39.0/100 for this county (Very Low rating). Expected Annual Loss comes in at Very Low (roughly $7.3M in annualized losses). Social vulnerability (Very High) and community resilience (Relatively Low) both factor into how that raw exposure plays out on the ground. Among the 18 modeled hazards, Hurricane carries the county's highest rating, a mid-range Relatively Moderate. FEMA's modeled frequency puts that hazard at roughly once every 4 years here, based on 91 historical events on record.

Reading the federal records together

This county has a small entry in FEMA's NFIP paid-claims table: 18 claims and $88.0K 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 Florida county averages 40.4 federal declaration records, while Jefferson County has 39. The gap is 3% 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.

71 /100

Historical Activity Index

High historical activity

Jefferson County, FL · 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) Very High
28/30

39 OpenFEMA declarations, full ingest window (1.9x national county average)

County Disaster Density Moderate
12/25

39 declarations (1.0x state county average of 40)

Major Disaster Share High
16/25

25 of 39 declarations are major disasters (64%)

Hazard Diversity Very High
15/20

6 different disaster types declared in Jefferson County

FEMA NRI 8-hazard radar - Jefferson County

Jefferson County NRI risk profile 8-axis FEMA National Risk Index radar showing per-hazard scores for Earthquake 8, Flood 8, Hurricane 48, Tornado 25, Wildfire 25, Drought 8, Heat Wave 25, Winter Storm 25. 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
Jefferson County NRI risk profile FIPS 12065 · 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

39

Very high volume

Major Disaster share

64%

Major-heavy

NRI risk score

39

Very Low

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

How often does each hazard strike Jefferson 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
Hurricane Relatively Moderate roughly once every 4 years
Wildfire Relatively Low roughly once every 913 years
Cold Wave Relatively Low an average of 1.5 times per year
Tornado Relatively Low roughly once every 3 years
Lightning Relatively Low an average of 79 times per year
Heat Wave Relatively Low 6.4 modeled event-days per year
Coastal Flooding Very Low an average of 3.8 times per year
Earthquake Very Low roughly once every 1,054 years
Drought Very Low 19 modeled event-days per year
Riverine Flooding Very Low roughly once every 3 years
Strong Wind Relatively Low an average of 1.3 times per year
Landslide Very Low roughly once every 12 years
Winter Weather Very Low roughly once every 4 years
Hail Very Low roughly once every 1 years

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

Disaster Types

Hurricane 21
Severe Storm 8
Tropical Storm 5
Biological 2
Fire 2
Flood 1

What Hurricane declarations mean here

Hurricane is the most frequent declaration type on Jefferson County's federal record, 54% 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 - 25 64.1%

of all 39 declarations

Emergency - 14 35.9%

of all 39 declarations

FEMA Declarations Timeline

Year Declarations
2024 5
2023 4
2022 2
2021 2
2020 3
2019 3
2017 2
2016 1
2012 1
2009 1
2008 2
2005 2
2004 4
2001 2
1999 1
Show 3 earlier declaration years
1998 2
1986 1
1973 1

Disaster Declarations

How the 39 FEMA declarations break into federal action codes (DR / EM / FM). Same DISTINCT grain as the table below.

Download these 39 declarations as CSV . FEMA source data is public domain; our derived presentation is CC0.

DR# Title Type Incident Date
4828 HURRICANE HELENE DR Hurricane 2024-09-28
3615 TROPICAL STORM HELENE EM Tropical Storm 2024-09-24
4806 HURRICANE DEBBY DR Tropical Storm 2024-08-10
3605 TROPICAL STORM DEBBY EM Tropical Storm 2024-08-03
4794 SEVERE STORMS, STRAIGHT-LINE WINDS, AND TORNADOES DR Severe Storm 2024-06-17
4734 HURRICANE IDALIA DR Hurricane 2023-08-31
3596 TROPICAL STORM IDALIA EM Tropical Storm 2023-08-28
4680 HURRICANE NICOLE DR Hurricane 2022-12-13
3587 TROPICAL STORM NICOLE EM Tropical Storm 2022-11-08
4673 HURRICANE IAN DR Hurricane 2022-09-29
3584 TROPICAL STORM IAN EM Hurricane 2022-09-24
3562 TROPICAL STORM FRED EM Hurricane 2021-08-16
3561 TROPICAL STORM ELSA EM Severe Storm 2021-07-04
4564 HURRICANE SALLY DR Hurricane 2020-09-23
4486 COVID-19 PANDEMIC DR Biological 2020-03-25
3432 COVID-19 EM Biological 2020-03-13
3419 HURRICANE DORIAN EM Hurricane 2019-08-30
4399 HURRICANE MICHAEL DR Hurricane 2018-10-11
3405 HURRICANE MICHAEL EM Hurricane 2018-10-09
4337 HURRICANE IRMA DR Hurricane 2017-09-10
Show 19 earlier declaration records
DR# Title Type Incident Date
3385 HURRICANE IRMA EM Hurricane 2017-09-05
4280 HURRICANE HERMINE DR Hurricane 2016-09-28
4068 TROPICAL STORM DEBBY DR Severe Storm 2012-07-03
1831 SEVERE STORMS, FLOODING, TORNADOES, AND STRAIGHT-LINE WINDS DR Severe Storm 2009-04-21
1785 TROPICAL STORM FAY DR Severe Storm 2008-08-24
3288 TROPICAL STORM FAY EM Severe Storm 2008-08-21
3220 HURRICANE KATRINA EVACUATION EM Hurricane 2005-09-05
1595 HURRICANE DENNIS DR Hurricane 2005-07-10
1561 HURRICANE JEANNE DR Hurricane 2004-09-26
1551 HURRICANE IVAN DR Hurricane 2004-09-16
1545 HURRICANE FRANCES DR Hurricane 2004-09-04
1539 TROPICAL STORM BONNIE AND HURRICANE CHARLEY DR Hurricane 2004-08-13
1381 TROPICAL STORM ALLISON DR Severe Storm 2001-06-17
1344 TROPICAL STORM HELENE DR Severe Storm 2000-10-03
3139 FL-FIRES 04/15/99 EM Fire 1999-04-27
1249 HURRICANE GEORGES DR Hurricane 1998-09-28
1223 EXTREME FIRE HAZARD DR Fire 1998-06-18
756 HURRICANE KATE DR Hurricane 1985-12-03
387 SEVERE STORMS & FLOODING DR Flood 1973-05-26

Storm Events in Florida

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

Storm Type Events Fatalities Injuries Property Damage
Thunderstorm Wind 5,243 17 45 $24.8M
Hail 1,012 0 0 $564.6K
Heavy Rain 865 2 3 $200.0K
Flood 826 9 0 $2.0B
Tropical Storm 767 92 6 $4.9B

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

NFIP Flood Insurance Claims

Total Claims

18

Total Paid

$88.0K

Avg Per Claim

$4.9K

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

FEMA National Risk Index

Overall Risk

Very Low

Score: 39.0/100

Expected Annual Loss

Very Low

$7.3M/year

Social Vulnerability

Very High

Community Resilience

Relatively Low

Hazard Risk Breakdown

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

Hurricane exposure in the model bundles the three ways a tropical system does harm, which arrive on different timescales and are insured differently: wind, storm surge on the coast, and rainfall flooding that can reach far inland well after landfall.

For Jefferson County the two measures on this page point the same way: Hurricane is the county's highest-rated modeled hazard (Relatively Moderate), and Hurricane declarations also lead its federal record. Where the model and the declaration history agree, the reading is comparatively straightforward, the hazard is both expected and repeatedly realised.

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

Jefferson County's closest FEMA peer: Cumberland County, ME

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

Compare beyond this state

Nationwide peers by NRI score & FEMA declaration volume

Two PlainHazard-derived comparison paths for Jefferson 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 39 FEMA declarations, Jefferson 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 Jefferson County?
The most common disaster type in Jefferson County is Hurricane, with 21 declarations. Other disaster types include Severe Storm (8), Tropical Storm (5), Biological (2).
How does Jefferson County's FEMA declaration record compare with the Florida average?
The typical Florida county has 40.4 FEMA declaration records; Jefferson County has 39, or 3% fewer. Against the national county mean of 20.7, this county's total is 88% higher. The comparison is historical and says nothing about the probability of a future event.
How many major FEMA disaster declarations has Jefferson County received?
Jefferson County has received 25 major disaster declarations, representing 64% of all 39 disaster declarations.
How many flood insurance claims has Jefferson County filed?
Jefferson County has 18 National Flood Insurance Program (NFIP) claims totaling $88.0K in payments, with an average of $4.9K per claim.
What was the worst year for disasters in Jefferson County?
The most active year for disaster declarations in Jefferson County was 2024, with 5 declarations. The county has FEMA disaster data spanning 1973 to 2024.
What is the FEMA National Risk Index score for Jefferson County?
According to the FEMA National Risk Index, Jefferson County, Florida has an overall risk score of 39.0 out of 100 (Very Low). On social vulnerability the county rates Very High; on community resilience, Relatively Low. The Expected Annual Loss (EAL) score is Very Low, representing $7.3M in annualized losses.
Which natural hazard poses the greatest risk to Jefferson County?
FEMA's NRI data points to Jefferson County as of the latest release is Hurricane (risk rating: Relatively Moderate). Other significant hazards include Wildfire (Relatively Low) and Cold Wave (Relatively Low). FEMA's modeled event frequency puts hurricane here at roughly once every 4 years, drawn from 91 historical events on record. 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 Jefferson County · vintage 2026-08-25 · Methodology · Florida profile · Verify with FEMA OpenFEMA · Verify with NOAA Storm Events