Johnson County, Wyoming: hazard risk
FEMA rates Johnson County's overall risk Very Low (score 19.3 of 100, higher than 19% of rated U.S. counties). Its storm record holds 750 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 | Relatively Moderate | 66.7 | $110K |
| Wildfire | Relatively Low | 87.8 | $958K |
| Landslide | Relatively Low | 74.6 | $8K |
| Hail | Relatively Low | 46.5 | $217K |
| Cold Wave | Relatively Low | 39.5 | $616K |
| Riverine Flooding | Relatively Low | 36.9 | $4.1M |
| Lightning | Relatively Low | 25.2 | $85K |
| Earthquake | Very Low | 57.7 | $387K |
| Avalanche | Very Low | 26.0 | $68 |
| Drought | Very Low | 19.6 | $4K |
| Tornado | Very Low | 15.6 | $145K |
| Strong Wind | Very Low | 14.9 | $116K |
| Heat Wave | Very Low | 6.7 | $9K |
| Ice Storm | Very Low | 6.3 | $3K |
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. |
|---|---|---|---|---|---|
| Winter storms | 243 | 4 | $213K | 18th of 23 | 2478th of 3,077 |
| High wind and dust storms | 165 | 0 | $326K | 12th of 23 | 1346th of 3,080 |
| Hail | 153 | 0 | $85K | 9th of 23 | 2674th of 3,080 |
| Severe thunderstorm wind | 68 | 0 | $57K | 16th of 23 | 2812th of 3,080 |
| Floods | 40 | 0 | $3.4M | 9th of 23 | 2867th of 3,080 |
| Extreme cold | 23 | 0 | – | 17th of 23 | 2556th of 3,076 |
| Tornadoes | 23 | 0 | $64K | 12th of 23 | 2638th of 3,080 |
| Wildfires | 9 | 0 | $12M | 12th of 23 | 967th of 2,972 |
| Heat | 7 | 0 | – | 5th of 23 | 2260th of 3,076 |
| Landslides and avalanches | 3 | 0 | $527K | 11th of 23 | 379th of 2,278 |
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.