Preview: automated baseline. Built automatically from federal data and not yet checked by hand. Check every figure against your own records before you use it in a plan.

Jefferson County, KY

Risk-assessment baseline packet. County area 21111. Release 2026-10, data as of 2026-09-28.

Download the packet

PDF: PDF, for printing and reading. Word: Word document, tables ready to paste into a plan. Excel: Excel workbook, one sheet per section, full tables. JSON: Packet data (JSON), for analysts. Full packet as a web page. File manifest (checksums, source versions).

Plan clock

Approved, expires 2028-01-11

Plan
Louisville-Jefferson Metro Government (FEMA plan 108750)
Approved
2023-01-12
Expires
2028-01-11
As of
2026-09-28
Days
470 days to expiry

Plan clock from the consolidated city-county government plan (Louisville/Jefferson County metro government). FEMA plan data has no separate county-level row for this county.

Map group: Expires in 12 to 24 months.

What changed since your last plan (approved 2023-01-12)

New federal declarations
DR-4702-KY, DR-4782-KY, EM-3624-KY, DR-4860-KY, EM-3626-KY, DR-4864-KY, EM-3633-KY (7 declaration rows; 5 counted incidents)
Storm Events records since approval
190 (data through 2026-06-30)
Repetitive loss now
FMA RL 76, SRL 164 (44 CFR 77.2); any definition: 460
Repeat-flood change
First release: no prior release to compare.

Plan status for every jurisdiction in the plan

3 jurisdictions. Each row is that jurisdiction's own plan clock. Notes include other approved plans FEMA lists for the same jurisdiction.

JurisdictionTypeStatusPlanApprovedExpiresDays to expirynegative = days since expiryUpdate underwayNotes
Louisville/Jefferson County metro governmentConsolidated GovernmentApproved, expires 2028-01-11Louisville-Jefferson Metro Government (FEMA plan 108750)2023-01-122028-01-11470
Prospect cityCityApproved, expires 2027-01-24KIPDA ADD Regional (FEMA plan 108078)2022-01-252027-01-24118member approved 2022-05-05
University of LouisvilleCollege/UniversityNo approved plan on record. Approvable pending adoption, not yet eligiblenonenonenoneFEMA tracker shows a plan approvable pending adoptionNot yet eligible: adopt the approved plan.

State plan status and tribal plans in this state: see the state page.

What the packet contains

Sections in FEMA checklist order. Each heading names the review item its tables support; whether the item is satisfied is decided by the plan and its reviewers. Full tables are in the downloads above.

Supports B1-a Hazards

14 of the 18 National Risk Index hazards apply here; omission evidence is shown only where NRI rates a hazard "Not Applicable", no federal declaration names it and Storm Events has no record of it since 1996.

Highest expected annual loss (NRI, modeled): Inland Flooding, Tornado and Earthquake.

Also check locally (not covered by NRI): dam failure (incl. upstream dams), levee failure, flash flood as its own subtype, ice jams, debris flows, erosion (riverine and coastal), land subsidence and sinkholes and expansive soils.

Check your state hazard mitigation plan's hazard list for this county; explain any hazard you drop.

Supports B1-b Location

  • Avalanche, Coastal Flooding, Earthquake, Hurricane, Landslide, Tornado, Tsunami, Volcanic Activity and Wildfire: Census tract rating counts from the National Risk Index tract table (see B1-f). Tract maps and place names are not in this packet.
  • Cold Wave, Drought, Hail, Heat Wave, Ice Storm, Lightning, Strong Wind and Winter Weather: Affects the whole planning area; national data do not distinguish locations within the county. Confirm locally.
  • Inland Flooding: The FEMA Flood Insurance Rate Map (FIRM) is the required location source for flooding. See the FEMA Flood Map Service Center (https://msc.fema.gov) for this county.

Supports B1-c Extent

Storm Events records for 11 of 20 hazard groups, with the scale, observed range and worst recorded event for each; the others say local data required.

  • Hail: 2.75 in hail, 1996-05-03
  • Thunderstorm Wind: 90 kt (104 mph) estimated, Thunderstorm Wind, 2001-10-24; same speed and measurement basis also recorded on 2001-10-24
  • Tornado: F4 tornado, 1974-04-03, 14.2 mi path length (records before 1996 may include the whole path; rating and listing come from the county where the tornado began), 33 yd wide, damage not recorded (pre-1996 record), 3 direct deaths, 225 direct injuries

Supports B1-d Previous occurrences

25 federal declaration rows for this area (18 counted incidents), each with type, dates and county Public Assistance dollars.

New since the last plan (approved 2023-01-12): EM-3633-KY, DR-4864-KY, EM-3626-KY, DR-4860-KY, EM-3624-KY, DR-4782-KY and DR-4702-KY.

4 statewide declarations listed separately.

Hazards with no recorded events are stated as such (6 of 18).

Storm Events history: 1,249 records (notable ones in the PDF, all of them in the Excel file).

Supports B1-e Probability

FEMA annualized frequency (modeled) for each hazard, with a descriptor from a scale defined in the packet.

  • Highly likely: Hail, Inland Flooding, Lightning and Strong Wind
  • Likely: Ice Storm, Landslide, Tornado and Winter Weather
  • Possible: Cold Wave and Heat Wave
  • Unlikely: Hurricane

Historical frequency by intensity band (tornado, hail, wind): 9 bands from Storm Events.

Supports B1-f Variation across the planning area

Range of census tract risk scores within the area for 18 hazards (216 tracts; rated tracts only).

2 member jurisdictions: plan clock, repeat-flood count, Public Assistance dollars and event records naming the place (starter, confirm locally).

Supports B2-a, B2-b Assets and impacts

Local data required

County-level starter. The plan must describe impacts for each participant and its own assets.

Storm Events damage since 2023-01-12: $1,000 in county-coded records (182 records); $0 reported for the zone (8 zone records). Data through 2026-06-30; nominal dollars.

Checklist of what to gather locally: Critical facilities and lifelines per hazard; A problem statement per participant per hazard; Changes in development in hazard-prone areas since the last approval, or a statement of none (E1-a); Future assets.

Supports B2-a Context

Population 782,833; building value $160,775,813,230 and agriculture value $8,197,030 (total, not at risk).

National Risk Index rating Relatively High; social vulnerability Relatively Moderate; community resilience Relatively High.

Supports B2-c Repetitive loss

Repetitive-loss properties, FMA definition (44 CFR 77.2): 76 repetitive loss, 164 severe repetitive loss. NFIP insurance definition: 378 and 92.

Mitigated 80; insured 168; NFIP data as of 2026-08-02. Counts by occupancy and for each member community are in the packet.

Releases

Monthly releases are planned (not yet running); files for a release never change. Earlier releases will be listed here with what changed between them. All releases.

Cite this

Hazard Plain (2026). Jefferson County, KY: risk-assessment baseline packet, release 2026-10 (data as of 2026-09-28; County area 21111). Preview: automated baseline. https://hazardplain.org/ky/21111/ Built from FEMA OpenFEMA, the FEMA National Risk Index and NOAA NCEI Storm Events; source versions in the packet's Sources list.

Source citations for the plan's bibliography (8)

How this packet is built, its sources and its limits