Ziebach County, South Dakota: hazard risk
FEMA rates Ziebach County's overall risk Very Low (score 25.2 of 100, higher than 25% of rated U.S. counties). Its storm record holds 738 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 |
|---|---|---|---|
| Cold Wave | Relatively Moderate | 87.8 | $3.2M |
| Winter Weather | Relatively Moderate | 63.3 | $54K |
| Strong Wind | Relatively Moderate | 52.1 | $312K |
| Wildfire | Relatively Low | 76.6 | $160K |
| Ice Storm | Relatively Low | 43.7 | $34K |
| Hail | Very Low | 31.5 | $68K |
| Drought | Very Low | 30.5 | $14K |
| Landslide | Very Low | 23.2 | $87 |
| Heat Wave | Very Low | 15.4 | $20K |
| Tornado | Very Low | 11.1 | $42K |
| Earthquake | Very Low | 10.4 | $5K |
| Riverine Flooding | Very Low | 8.9 | $640K |
| Lightning | Very Low | 8.5 | $15K |
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. |
|---|---|---|---|---|---|
| Severe thunderstorm wind | 224 | 0 | $391K | 61st of 66 | 2463rd of 3,080 |
| Hail | 200 | 0 | $1.0M | 66th of 66 | 2388th of 3,080 |
| High wind and dust storms | 128 | 0 | $164 | 37th of 66 | 653rd of 3,080 |
| Winter storms | 106 | 0 | $10M | 62nd of 66 | 2204th of 3,077 |
| Floods | 41 | 0 | $3.4M | 49th of 66 | 2454th of 3,080 |
| Tornadoes | 24 | 0 | $2.2M | 64th of 66 | 2561st of 3,080 |
| Extreme cold | 11 | 0 | – | 57th of 66 | 2205th of 3,076 |
| Heat | 1 | 0 | – | 60th of 66 | 2449th of 3,076 |
| Heavy rain | 1 | 0 | – | 29th of 66 | 2342nd of 3,080 |
| Wildfires | 1 | 0 | – | 42nd of 66 | 1233rd of 2,972 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Ziebach County record: every hazard by year and month, the deadliest events and FEMA's declarations.