Turner CountyPower Outage History
2015–2025 · South Dakota
Better than average — fewer or shorter outages than most counties.
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 9, 2020 | 5 hrs | 1,479 (28%) | Thunderstorm Wind |
| May 12, 2022 | 70 hrs | 1,295 (24%) | Drought |
| Mar 5, 2020 | 2 hrs | 1,183 (22%) | Flood |
| Jul 12, 2023 | 7 hrs | 1,113 (21%) | Drought |
| Jul 30, 2025 | 14 hrs | 983 (18%) | Excessive Heat |
Over the 11 years from 2015 to 2025, Turner County recorded 234 distinct power outage events, averaging 4.2 hours per event.
The single worst outage on record in Turner County started June 9, 2020 (Thunderstorm Wind), lasting 5 hours and leaving up to 1,479 customers without power (28% of the county) at its peak.
June has historically been the worst month for outages in Turner County, with 43 events recorded during that month across the dataset.
Based on this history, Turner County earns a Reliability Grade of B, placing it in the 64th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Turner County's outage profile
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Outage-prep kit
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Similar counties in South Dakota
Counties with the closest reliability grade and national percentile to Turner County.
| County | Grade | National percentile |
|---|---|---|
| Day County | B | 65th |
| Lake County | B | 65th |
| Hanson County | B | 65th |
| Fall River County | B | 65th |
| Yankton County | B | 65th |
Most reliable counties in South Dakota
The top 3 counties in South Dakota by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Clay County | A | 100th |
| Codington County | A | 98th |
| Tripp County | A | 98th |
Least reliable counties in South Dakota
The bottom 3 counties in South Dakota by reliability grade and percentile.
| County | Grade | National percentile |
|---|---|---|
| Harding County | D | 21st |
| Perkins County | D | 29th |
| Custer County | D | 30th |
Most reliable counties nationally
The top 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | South Dakota | A | 100th |
| Clearwater County | Minnesota | A | 99th |
| Limestone County | Alabama | A | 99th |
Least reliable counties nationally
The bottom 3 counties nationally by reliability grade and percentile.
| County | State | Grade | National percentile |
|---|---|---|---|
| Clay County | West Virginia | F | 0th |
| Lincoln County | West Virginia | F | 0th |
| Cameron Parish | Louisiana | F | 0th |
FAQ
How often does power go out in Turner County?
Between 2015 and 2025, Turner County recorded 234 outage events, averaging 4.2 hours each.
What is Turner County's reliability grade?
Turner County has a Reliability Grade of B, in the 64th national percentile.
What was the worst power outage in Turner County?
The worst outage on record started June 9, 2020 (Thunderstorm Wind), lasting 5 hours and affecting up to 1,479 customers.