Power outage history
McClain County Oklahoma
3.8hours
without power for the average customer in a typical year, 2018–2025
64th most of 75 in Oklahoma 42% below 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 McClain's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2020 was the worst well-recorded year, at 9.8 hours for the average customer. Hatched years have a thin record and are left out of the averages.
McClain, 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 |
|---|---|---|---|---|---|---|
| Oct 27, 2020 | Ice storm | 5,566 | 25% | 3.4 d | 6.8 h | 150k |
| Apr 19, 2023 | Tornadoes | 11,712 | 52% | 36 h | 7.0 h | 61k |
| Nov 28, 2015 | Ice storm | 9,626 | 43% | 7.2 h | 5.2 h | 35k |
| May 20, 2018 | Thunderstorms | 2,795 | 12% | 19 h | 48 min | 26k |
| Jun 19, 2019 | Thunderstorms | 1,288 | 6% | 21 h | 26 h | 14k |
| Nov 3, 2024 | Thunderstorms | 2,580 | 11% | 13 h | 11 h | 13k |
| Dec 27, 2015 | No storm report | 9,584 | 42% | 3.8 h | 30 min | 11k |
| Apr 26, 2016 | Thunderstorms | 4,307 | 19% | 3.8 h | 3.2 h | 10k |
| Jun 5, 2025 | Thunderstorms | 1,348 | 6% | 14 h | 15 h | 10k |
| Jul 12, 2020 | Thunderstorms | 1,066 | 5% | 13 h | – | 8.8k |
| Jul 9, 2023 | Thunderstorms | 3,519 | 16% | 3.0 h | 2.5 h | 8.1k |
| Aug 15, 2015 | No storm report | 5,270 | 23% | 1.5 h | 1.5 h | 7.9k |
| Dec 13, 2022 | Tornadoes | 665 | 3% | 15 h | – | 7.8k |
| Feb 16, 2021 | Winter storm | 3,412 | 15% | 2.2 h | 2.0 h | 6.6k |
| Sep 1, 2020 | Thunderstorms | 2,620 | 12% | 3.5 h | 3.0 h | 6.6k |
| Apr 18, 2020 | No storm report | 1,881 | 8% | 6.5 h | 1.0 h | 5.8k |
| Aug 11, 2024 | Thunderstorms | 2,524 | 11% | 3.0 h | 30 min | 5.7k |
| Jun 7, 2022 | Thunderstorms | 840 | 4% | 9.2 h | – | 5.4k |
| Sep 17, 2016 | Thunderstorms | 570 | 3% | 8.5 h | – | 4.8k |
| Mar 21, 2016 | No storm report | 9,638 | 43% | 30 min | – | 4.8k |
| Aug 18, 2019 | No storm report | 2,236 | 10% | 4.8 h | 1.8 h | 4.6k |
| Apr 28, 2021 | Thunderstorms | 3,442 | 15% | 1.5 h | 12 min | 4.1k |
| Jan 14, 2024 | Winter storm | 3,334 | 15% | 3.5 h | 3.5 h | 4.0k |
| Oct 22, 2015 | No storm report | 5,336 | 24% | 48 min | 5.8 h | 4.0k |
| Jul 11, 2023 | No storm report | 1,820 | 8% | 2.2 h | 2.8 h | 4.0k |
| Feb 26, 2023 | Thunderstorms | 3,223 | 14% | 1.2 h | 12 min | 3.9k |
| Sep 22, 2017 | No storm report | 1,786 | 8% | 3.5 h | 3.5 h | 3.9k |
| May 22, 2020 | No storm report | 876 | 4% | 5.2 h | – | 3.7k |
| Jun 8, 2022 | Flooding | 3,143 | 14% | 1.2 h | 48 min | 3.6k |
| Sep 5, 2023 | Thunderstorms | 372 | 2% | 11 h | – | 3.2k |
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 McClain from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Ice storm 30%
- No storm on record 27%
- Thunderstorms 24%
- Tornadoes 14%
- Winter storm 3.3%
- Heat 1.2%
- Flooding 0.7%
- Windstorm 0.6%
Who keeps the lights on
Utilities serving McClain
As each utility reports to the Energy Information Administration for its whole Oklahoma territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Oklahoma Gas & Electric Co | Investor Owned | 237 | 145 | 1.71 | 12.5 | 716k |
| Public Service Co of Oklahoma | Investor Owned | 200 | 98 | 1.48 | 14.2 | 506k |
| Oklahoma Electric Coop Inc | Cooperative | 70 | 56 | 1.29 | 12.9 | 60k |
| City of Purcell | OK | – | – | – | – | 27k |
| People's Electric Cooperative | Cooperative | 245 | 212 | 2.60 | 15.6 | 15k |
| Rural Electric Coop, Inc | Cooperative | 698 | 212 | 4.49 | 11.9 | 9.2k |
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
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 22,625 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 →