Johnson County, Kentucky: Natural Disaster Risk and History
Johnson County, Kentucky has a Relatively Low natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025): a score of 71.1 out of 100, higher than about 71% of US counties, with landslides, inland (river and flash) flooding and wildfires scoring highest of its 18 hazards and $20 million a year in expected losses.
OpenFEMA lists 46 federal disaster declarations that included Johnson County since 1967, not counting 2 for COVID-19; the latest is EM-3633-KY (Severe Winter Storm, declared 24 January 2026). NOAA's Storm Prediction Center recorded 2 tornadoes touching Johnson County from 1950 to 2025.
Live weather alerts for Kentucky All official warnings Latest FEMA declarations
Population 22,621 Buildings worth $3.9 billion Area 267 sq mi Risk rank in Kentucky 23 of 120 FIPS 21115
All 18 hazards, highest risk first
FEMA National Risk Index| Hazard | Risk rating | Score | Expected loss a year | How often | Events in record |
|---|---|---|---|---|---|
| Landslide | Relatively Moderate | 89.9 | $39,009 | about once every 1.3 years | — |
| Inland flooding | Relatively Moderate | 85.2 | $18 million | about 1.5 a year | 43 |
| Wildfire | Relatively Low | 76.3 | $203,857 | about once every 138 years | — |
| Winter weather | Relatively Moderate | 65.1 | $74,893 | about 15 a year | 292 |
| Heat wave | Relatively Low | 60.3 | $407,387 | about 2.5 a year | 42 |
| Hurricane | Very Low | 45.8 | $34,272 | about once every 44 years | 6 |
| Lightning | Relatively Low | 44.6 | $133,500 | about 5 a year | 46,788 strikes |
| Earthquake | Very Low | 42.8 | $124,327 | about once every 730 years | — |
| Hail | Relatively Low | 38.9 | $118,132 | about 3.4 a year | 129 |
| Cold wave | Relatively Low | 36.5 | $393,554 | about once a year | 19 |
| Ice storm | Relatively Low | 33.2 | $26,583 | about once every 3.2 years | 21 |
| Strong wind | Relatively Low | 31.7 | $213,033 | about 3 a year | 114 |
| Tornado | Relatively Low | 30.5 | $365,330 | about once every 23 years | 4 |
| Avalanche | Very Low | 7.3 | $3 | about once every 100 years | 0 |
| Drought | No Rating | 0.0 | — | about 3.2 a year | 84 |
| Coastal flooding | Not Applicable | — | — | — | — |
| Tsunami | Not Applicable | — | — | — | — |
| Volcanic activity | Not Applicable | — | — | — | — |
Score: FEMA's percentile among US counties that face the hazard (higher = more risk). Expected loss: FEMA's modelled average yearly loss to buildings, people (as a statistical value) and crops. How often: FEMA's annualised frequency of the hazard in the county; for some hazards it counts event-days, so it is a rough guide, not a forecast. "Not Applicable" means FEMA does not model that hazard here.
Federal disaster declarations 46
Most common: Severe Storm 23, Flood 11, Severe Ice Storm 3, Snowstorm 3.
| Decade | Declarations | Incident types |
|---|---|---|
| 1960s | 1 | Flood |
| 1970s | 2 | Flood ×2 |
| 1980s | 2 | Flood, Severe Storm |
| 1990s | 8 | Severe Storm ×3, Snowstorm ×3, Tornado, Flood |
| 2000s | 12 | Severe Storm ×7, Severe Ice Storm ×2, Fire ×2, Hurricane |
| 2010s | 8 | Severe Storm ×5, Flood ×3 |
| 2020s | 13 | Severe Storm ×7, Flood ×3, Winter Storm, Tropical Storm, Severe Ice Storm |
The last 10
Widest declarations that included Johnson County
- Severe Winter Storm (2026, EM-3633-KY): 120 Kentucky counties designated.
- Severe Storms, Straight-Line Winds, Tornadoes, and Flooding (2025, EM-3626-KY): 120 Kentucky counties designated.
- Severe Storms, Straight-Line Winds, Flooding, and Landslides (2025, EM-3624-KY): 120 Kentucky counties designated.
Named storms in its declarations: Hurricane Helene (2024), Hurricane Katrina (2005).
Not counted above: 2 COVID-19 ("Biological") declarations — in 2020 every US county was included. Kentucky also had 4 statewide declarations with no county list.
Tornado record since 1950 2
| Tornadoes touching the county | 2 |
|---|---|
| Strongest-rated | (E)F1 ×1 |
| Peak month | June (2) |
| Deadliest | — |
| Longest path | 2 Jun 1990, F1, 1 mi path |
| Most recent | 9 Jun 2013, EF0, 0.5 mi path |
| Deaths / injuries on those paths | 0 / 0 |
| Rating | (E)F0 | (E)F1 | (E)F2 | (E)F3 | (E)F4 | (E)F5 | Unrated |
|---|---|---|---|---|---|---|---|
| Count | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| Decade | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
|---|---|---|---|---|---|---|---|---|
| Count | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 |
Deaths and injuries are for each tornado's whole path, which can run beyond this county. F-scale ratings before February 2007, Enhanced Fujita (EF) after.
How Johnson County compares with its 5 nearest counties
| County | Distance | Overall risk | Score | Top hazard |
|---|---|---|---|---|
| Johnson County (this page) | — | Relatively Low | 71.1 | Landslide |
| Magoffin County | 26 km | Very Low | 35.0 | Landslide |
| Lawrence County | 26 km | Relatively Low | 53.3 | Landslide |
| Martin County | 28 km | Relatively Low | 49.9 | Landslide |
| Floyd County | 33 km | Relatively Moderate | 94.2 | Inland flooding |
| Elliott County | 38 km | Very Low | 12.2 | Landslide |
Nearest by distance between county centres. Every county in Kentucky, ranked.
Vulnerability and resilience
| Social vulnerability | Very High 82.1 |
|---|---|
| Community resilience | Very Low 17.1 |
| Community risk factor | 1.51 |
| Expected annual loss, all hazards | $20 million |
FEMA scales expected losses up where social vulnerability is high (people who may find it harder to prepare, evacuate or recover) and down where community resilience is high. A factor above 1 raises the risk score. For social vulnerability a high rating is worse; for resilience a high rating is better.
Prepare for Johnson County's main hazards
- Right now: National Weather Service alerts for Kentucky · all official warnings on Global Incident Tracker.
- Landslide: Landslides recorded
- Inland flooding: Flood safety: why shallow water kills · Floods recorded
- Wildfire: US wildfires now · Wildfire smoke: what protects you
- Your property's flood zone: FEMA Flood Map Service Center ↗ — this page cannot tell you that.
- Official preparedness guidance: Ready.gov ↗ and your county emergency management office.
What this page shows, and what it misses
FEMA's National Risk Index rates a whole county against every other US county; it is a planning-level estimate for nationwide comparison, not a flood-zone map and not a substitute for a local risk assessment or the risk to one home. Declarations are presidential disaster, emergency and fire management declarations that named this county; state declarations and SBA or USDA designations are not included. Tornadoes are counted when the county is one of up to four listed on the track; 670 tornadoes that crossed a state line carry no county list in NOAA's file and are left out.
Federal Emergency Management Agency (FEMA), National Risk Index Dataset: National Risk Index Counties - v1.20.0 (December 2025). Retrieved from https://services.arcgis.com/XG15cJAlne2vxtgt/ArcGIS/rest/services/National_Risk_Index_Counties/FeatureServer/0/query on November 2, 2026, 1:20 PM EST. This product uses the Federal Emergency Management Agency’s National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Federal Emergency Management Agency (FEMA), OpenFEMA Dataset: Disaster Declarations Summaries - v2, retrieved from https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries on November 2, 2026, 1:21 PM EST. This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Tornado records: NOAA/NWS Storm Prediction Center, Severe Weather Database, tornadoes 1950–2025 (https://www.spc.noaa.gov/wcm/data/1950-2025_actual_tornadoes.csv, downloaded 2 November 2026). Public domain; not endorsed by NOAA. Compiled by Global Incident Tracker.
Questions about Johnson County
What natural disasters is Johnson County, Kentucky most at risk from?
Johnson County, Kentucky has a Relatively Low natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025): a score of 71.1 out of 100, higher than about 71% of US counties, with landslides, inland (river and flash) flooding and wildfires scoring highest of its 18 hazards and $20 million a year in expected losses.
How many federal disaster declarations has Johnson County had?
OpenFEMA lists 46 federal disaster declarations that included Johnson County since 1967, not counting 2 for COVID-19; the latest is EM-3633-KY (Severe Winter Storm, declared 24 January 2026). Another 4 Kentucky declarations were made statewide without a county list.
How many tornadoes have hit Johnson County?
NOAA's Storm Prediction Center recorded 2 tornadoes touching Johnson County from 1950 to 2025.
Is the National Risk Index a flood zone map?
No. The National Risk Index is a planning-level estimate for a whole county, built for nationwide comparison. It does not tell you the flood zone or the risk of a single property: for that, look up the address on FEMA's Flood Map Service Center (msc.fema.gov) and ask your local floodplain manager.