Power outage history
Turner County South Dakota
6.3hours
without power for the average customer in a typical year, 2018–2025
12th most of 32 in South Dakota close to the national median
Every day since 2015
Eleven years, one night at a time
Each cell is a day. The brighter it is, the larger the share of Turner's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2022 was the worst well-recorded year, at 11 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Turner, hours without power per customer
The record
The biggest outages since 2015
Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.
| Began | Storm | Peak out | Share | Lasted | 90% restored | Customer-hours |
|---|---|---|---|---|---|---|
| May 12, 2022 | Thunderstorms | 1,295 | 26% | 2.9 d | 2.5 h | 33k |
| Aug 28, 2021 | Thunderstorms | 815 | 16% | 31 h | 8.5 h | 8.6k |
| Jul 12, 2019 | No storm report | 108 | 2% | 3.0 d | – | 7.4k |
| Jul 29, 2025 | Thunderstorms | 983 | 20% | 19 h | 3.5 h | 7.2k |
| Jul 20, 2019 | No storm report | 723 | 15% | 34 h | 13 h | 5.8k |
| Jul 12, 2023 | Thunderstorms | 1,113 | 22% | 6.8 h | 6.2 h | 4.9k |
| Jul 28, 2025 | Thunderstorms | 370 | 7% | 19 h | 14 h | 3.9k |
| Aug 15, 2019 | No storm report | 813 | 16% | 5.2 h | 3.0 h | 3.8k |
| Sep 28, 2025 | No storm report | 570 | 11% | 5.8 h | 11 h | 3.3k |
| Jul 20, 2025 | Heat | 101 | 2% | 34 h | – | 3.1k |
| Mar 1, 2025 | Windstorm | 828 | 17% | 3.5 h | 3.5 h | 2.9k |
| Sep 10, 2019 | Thunderstorms | 377 | 8% | 19 h | 12 min | 2.4k |
| May 9, 2015 | No storm report | 557 | 11% | 4.2 h | 30 min | 2.4k |
| Nov 20, 2017 | No storm report | 669 | 13% | 3.5 h | 7.8 h | 2.3k |
| Jun 23, 2021 | No storm report | 79 | 2% | 31 h | – | 2.3k |
| Nov 30, 2019 | Winter storm | 790 | 16% | 3.0 h | 2.8 h | 2.1k |
| Jun 9, 2020 | Thunderstorms | 1,479 | 30% | 4.0 h | 2.8 h | 2.0k |
| Apr 6, 2024 | No storm report | 825 | 17% | 2.2 h | 2.2 h | 1.9k |
| Mar 5, 2020 | Flooding | 1,183 | 24% | 2.2 h | 2.0 h | 1.7k |
| Apr 11, 2019 | Flooding | 125 | 3% | 18 h | – | 1.7k |
| Jun 11, 2025 | No storm report | 701 | 14% | 2.5 h | 1.5 h | 1.6k |
| Jun 17, 2016 | Thunderstorms | 650 | 13% | 5.5 h | 5.5 h | 1.6k |
| Sep 12, 2015 | No storm report | 555 | 11% | 2.8 h | 6.2 h | 1.5k |
| May 3, 2023 | No storm report | 210 | 4% | 10 h | – | 1.5k |
| May 7, 2020 | No storm report | 267 | 5% | 6.0 h | 6.0 h | 1.5k |
| Jun 20, 2022 | No storm report | 187 | 4% | 15 h | – | 1.5k |
| Oct 13, 2022 | No storm report | 820 | 17% | 1.8 h | 2.0 h | 1.4k |
| Sep 18, 2018 | No storm report | 473 | 10% | 2.5 h | 3.0 h | 1.2k |
| Mar 15, 2021 | Winter storm | 345 | 7% | 6.2 h | 6.5 h | 1.2k |
| Jun 1, 2018 | Thunderstorms | 250 | 5% | 5.2 h | 3.2 h | 1.1k |
After the peak
How fast the lights come back
Each line is one major outage, from its peak. The amber line is the typical path.
When it happens
The outage clock
Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.
What was happening
Weather behind the outages
Each outage is matched to NOAA storm reports for Turner from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Thunderstorms 51%
- No storm on record 36%
- Winter storm 4.8%
- Flooding 3.0%
- Heat 2.9%
- Windstorm 2.3%
Who keeps the lights on
Utilities serving Turner
As each utility reports to the Energy Information Administration for its whole South Dakota territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Northern States Power Co - Minnesota | Investor Owned | 160 | 58 | 0.88 | 13.1 | 94k |
| Clay-Union Electric Corp | SD | – | – | – | 11.6 | 53k |
| NorthWestern Energy | Investor Owned | 120 | 82 | 1.14 | 13.3 | 52k |
| Sioux Valley SW Elec Coop | Cooperative | 59 | 59 | 1.64 | 13.9 | 23k |
| Southeastern Electric Coop Inc | Cooperative | 24 | 24 | – | 13.0 | 21k |
| City of Parker | SD | – | – | – | – | 6.4k |
| WAPA-- Western Area Power Administration | Federal | – | – | – | – | – |
EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.
Next door
Neighbouring counties
- McCook 11 h
- Yankton 6.4 h
- Turner (this county) 6.3 h
- Minnehaha 5.6 h
- Hutchinson 2.5 h
- Lincoln 2.2 h
About these numbers
Notes
Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 4,964 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →