Yankton County, South Dakota: hazard risk
FEMA rates Yankton County's overall risk Relatively Low (score 63.4 of 100, higher than 63% of rated U.S. counties); 3 of its 13 hazards are rated Relatively High or Very High, led by drought, winter weather, ice storm. Its storm record holds 878 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 High | 93.7 | $1.8M |
| Winter Weather | Relatively High | 92.5 | $414K |
| Ice Storm | Relatively High | 82.2 | $409K |
| Tornado | Relatively Moderate | 86.7 | $4.7M |
| Hail | Relatively Moderate | 85.4 | $1.0M |
| Lightning | Relatively Moderate | 78.7 | $564K |
| Cold Wave | Relatively Moderate | 73.3 | $2.0M |
| Strong Wind | Relatively Moderate | 57.6 | $567K |
| Wildfire | Relatively Low | 75.6 | $230K |
| Landslide | Relatively Low | 68.8 | $4K |
| Heat Wave | Relatively Low | 63.4 | $563K |
| Riverine Flooding | Relatively Low | 57.3 | $6.9M |
| Earthquake | Very Low | 29.3 | $57K |
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 | 256 | 0 | $26M | 4th of 66 | 258th of 3,080 |
| Winter storms | 169 | 0 | $285K | 10th of 66 | 286th of 3,077 |
| Severe thunderstorm wind | 161 | 0 | $4.4M | 4th of 66 | 1335th of 3,080 |
| Floods | 89 | 0 | $65M | 7th of 66 | 471st of 3,080 |
| Drought | 58 | 0 | $66M | 5th of 66 | 238th of 3,063 |
| High wind and dust storms | 54 | 0 | $360K | 9th of 66 | 322nd of 3,080 |
| Heat | 29 | 1 | – | 5th of 66 | 478th of 3,076 |
| Tornadoes | 29 | 0 | $37M | 12th of 66 | 1120th of 3,080 |
| Extreme cold | 25 | 0 | – | 22nd of 66 | 512th of 3,076 |
| Lightning | 5 | 1 | $27K | 4th of 66 | 748th of 3,080 |
| Wildfires | 2 | 0 | – | 5th of 66 | 599th of 2,972 |
| Heavy rain | 1 | 0 | – | 12th of 66 | 1941st 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 Yankton County record: every hazard by year and month, the deadliest events and FEMA's declarations.