Bon Homme County, South Dakota: hazard risk
FEMA rates Bon Homme County's overall risk Very Low (score 10.8 of 100, higher than 10% of rated U.S. counties). Its storm record holds 812 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 |
|---|---|---|---|
| Drought | Relatively Moderate | 85.7 | $1.8M |
| Ice Storm | Relatively Moderate | 62.4 | $215K |
| Winter Weather | Relatively Low | 59.8 | $128K |
| Hail | Relatively Low | 52.2 | $410K |
| Cold Wave | Relatively Low | 50.8 | $1.4M |
| Tornado | Relatively Low | 33.2 | $881K |
| Strong Wind | Relatively Low | 24.9 | $338K |
| Wildfire | Very Low | 53.5 | $83K |
| Landslide | Very Low | 35.7 | $685 |
| Heat Wave | Very Low | 23.2 | $119K |
| Earthquake | Very Low | 13.6 | $20K |
| Lightning | Very Low | 13.3 | $67K |
| Riverine Flooding | Very Low | 8.9 | $1.7M |
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 | 229 | 0 | $947K | 7th of 66 | 423rd of 3,080 |
| Winter storms | 163 | 0 | $1.9M | 14th of 66 | 369th of 3,077 |
| Severe thunderstorm wind | 125 | 0 | $2.9M | 10th of 66 | 1866th of 3,080 |
| Floods | 107 | 0 | $36M | 9th of 66 | 501st of 3,080 |
| Drought | 59 | 0 | $65M | 6th of 66 | 270th of 3,063 |
| High wind and dust storms | 45 | 0 | $247K | 20th of 66 | 478th of 3,080 |
| Heat | 28 | 0 | – | 7th of 66 | 531st of 3,076 |
| Tornadoes | 26 | 0 | $6.3M | 11th of 66 | 1085th of 3,080 |
| Extreme cold | 25 | 0 | – | 30th of 66 | 572nd of 3,076 |
| Lightning | 3 | 0 | $63K | 12th of 66 | 1178th of 3,080 |
| Heavy rain | 1 | 0 | – | 15th of 66 | 1980th 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 Bon Homme County record: every hazard by year and month, the deadliest events and FEMA's declarations.