Power outages in Custer, SD
Live outages for Custer and the surrounding area, updated every 10 minutes. Custer has 1,803 residents.
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No live outage data for Custer yet.
Outage map
CusterCuster County
Outage history in Custer County, which includes Custer
2014–2025 recordCuster County averaged 8.7 significant outages a year in 2023–2025, about typical for South Dakota counties.
In the 12 months to December 2025, there were 19. Half were over within 2 hours; the longest lasted 5.7 days, starting December 18, 2025.
The largest on record began December 18, 2025, with 5,295 customers out at once.
8.7significant outages a year (2023–2025)
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At least 1% of the area's customers, and at least 100, without power at the same time. Outages less than 6 hours apart count as one.2 hourstypical (median) length
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Half of significant outages here ended sooner than this, and half lasted longer.5.7 dayslongest on record (December 2025)
5,295most customers out at once
| Largest events (start) | Peak out | LastediHow long this area stayed at or above the significant-outage line, not how long any one home was without power. | Customer-hoursiCustomers out multiplied by hours out, added up over the event. 1,000 customers out for 3 hours is 3,000 customer-hours. |
|---|---|---|---|
| December 18, 2025 | 5,295 | 5.7 days | 255,677 |
| November 13, 2025 | 4,910 | 7 hours | 15,135 |
| May 21, 2019 | 1,649 | 23 hours | 7,685 |
| March 13, 2021 | 1,564 | 4 hours | 4,091 |
| November 30, 2019 | 1,506 | 11 hours | 14,442 |
Recorded outages from EAGLE-I, Oak Ridge National Laboratory (CC BY 4.0).i
From EAGLE-I, Oak Ridge National Laboratory's record of utility outage data every 15 minutes since 2014 (CC BY 4.0). It covered about 9 in 10 U.S. customers.