Johnson County, Kansas: hazard risk
FEMA rates Johnson County's overall risk Relatively High (score 94.8 of 100, higher than 94% of rated U.S. counties); 8 of its 14 hazards are rated Relatively High or Very High, led by winter weather, tornado, ice storm. Its storm record holds 1,514 events since 1950.
FEMA's rating for each hazard
These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.
FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).
| Hazard | Risk rating | Score | Expected annual loss |
|---|---|---|---|
| Winter Weather | Very High | 100.0 | $6.0M |
| Tornado | Very High | 98.9 | $55M |
| Ice Storm | Very High | 98.7 | $5.2M |
| Lightning | Very High | 98.4 | $5.1M |
| Hail | Relatively High | 98.9 | $15M |
| Heat Wave | Relatively High | 98.4 | $27M |
| Cold Wave | Relatively High | 98.0 | $31M |
| Riverine Flooding | Relatively High | 94.9 | $110M |
| Earthquake | Relatively Low | 75.7 | $1.8M |
| Landslide | Relatively Low | 69.0 | $8K |
| Strong Wind | Relatively Low | 47.1 | $758K |
| Wildfire | Very Low | 61.2 | $138K |
| Drought | Very Low | 24.9 | $18K |
| Hurricane | No Rating | 0.0 | $0 |
Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.
What the record holds
| Hazard | Records | Deaths | Damage | Rank in state | Rank in U.S. |
|---|---|---|---|---|---|
| Hail | 657 | 0 | $5.3M | 2nd of 105 | 9th of 3,080 |
| Severe thunderstorm wind | 568 | 1 | $4.5M | 2nd of 105 | 133rd of 3,080 |
| Floods | 109 | 3 | $16M | 4th of 105 | 353rd of 3,080 |
| Winter storms | 58 | 1 | $9.1M | 9th of 105 | 1227th of 3,077 |
| Tornadoes | 45 | 0 | $51M | 4th of 105 | 192nd of 3,080 |
| Drought | 23 | 0 | – | 43rd of 105 | 976th of 3,063 |
| Heat | 19 | 0 | – | 7th of 105 | 627th of 3,076 |
| High wind and dust storms | 13 | 0 | $17K | 73rd of 105 | 1955th of 3,080 |
| Extreme cold | 10 | 0 | – | 6th of 105 | 1089th of 3,076 |
| Heavy rain | 6 | 0 | – | 53rd of 105 | 837th of 3,080 |
| Lightning | 5 | 0 | $1.0M | 10th of 105 | 681st of 3,080 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Johnson County record: every hazard by year and month, the deadliest events and FEMA's declarations.