Power outage history
Morton County North Dakota
The outage record here is too thin for a reliable yearly average. Raw events are listed below.
Worst outage on record Jun 20, 2025 14% of customers out · 90% back in 10 hoursEvery day since 2015
Eleven years, one night at a time
Each cell is a day. The brighter it is, the larger the share of Morton's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
Morton, 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 |
|---|---|---|---|---|---|---|
| Jun 20, 2025 | Thunderstorms | 2,690 | 14% | 11 h | 10 h | 15k |
| Jul 3, 2018 | Thunderstorms | 1,923 | 10% | 4.0 h | 3.2 h | 5.7k |
| Jun 20, 2022 | Thunderstorms | 1,714 | 9% | 3.8 h | 4.8 h | 4.9k |
| Jul 11, 2023 | No storm report | 1,642 | 9% | 2.2 h | 2.2 h | 3.6k |
| Oct 30, 2024 | No storm report | 1,067 | 6% | 3.2 h | 3.2 h | 3.5k |
| Oct 13, 2017 | No storm report | 478 | 3% | 5.8 h | – | 2.7k |
| Aug 19, 2018 | No storm report | 926 | 5% | 2.8 h | – | 2.5k |
| Sep 25, 2018 | No storm report | 934 | 5% | 2.2 h | – | 2.0k |
| Dec 25, 2022 | Winter storm | 590 | 3% | 2.5 h | – | 1.5k |
| Aug 1, 2023 | Thunderstorms | 725 | 4% | 3.0 h | – | 1.4k |
| Jun 30, 2020 | No storm report | 447 | 2% | 3.0 h | – | 1.3k |
| Apr 23, 2024 | No storm report | 488 | 3% | 2.5 h | – | 1.2k |
| Jun 24, 2022 | No storm report | 951 | 5% | 1.2 h | – | 1.2k |
| Jun 25, 2022 | No storm report | 932 | 5% | 1.2 h | – | 1.2k |
| Apr 4, 2025 | No storm report | 466 | 2% | 2.5 h | – | 1.2k |
| Aug 27, 2024 | No storm report | 1,419 | 7% | 48 min | 48 min | 1.1k |
| Mar 7, 2018 | No storm report | 1,020 | 5% | 1.0 h | 1.0 h | 1.0k |
| Apr 17, 2019 | No storm report | 404 | 2% | 2.5 h | – | 1.0k |
| Dec 15, 2022 | Winter storm | 571 | 3% | 1.8 h | – | 999 |
| Sep 20, 2022 | No storm report | 1,777 | 9% | 30 min | 30 min | 888 |
| Jun 8, 2021 | No storm report | 646 | 3% | 1.5 h | – | 871 |
| May 5, 2021 | No storm report | 796 | 4% | 1.0 h | – | 796 |
| Sep 17, 2018 | No storm report | 956 | 5% | 48 min | 30 min | 717 |
| Mar 24, 2023 | No storm report | 465 | 2% | 1.5 h | – | 696 |
| Apr 6, 2019 | No storm report | 323 | 2% | 2.0 h | – | 633 |
| May 9, 2023 | Thunderstorms | 415 | 2% | 1.5 h | – | 620 |
| Apr 24, 2022 | Winter storm | 603 | 3% | 1.0 h | – | 602 |
| Dec 15, 2022 | Winter storm | 595 | 3% | 1.0 h | – | 594 |
| Jun 11, 2025 | No storm report | 783 | 4% | 48 min | – | 587 |
| Jun 11, 2021 | Thunderstorms | 442 | 2% | 1.2 h | – | 550 |
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 Morton from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Thunderstorms 48%
- No storm on record 46%
- Winter storm 6.8%
Who keeps the lights on
Utilities serving Morton
As each utility reports to the Energy Information Administration for its whole North 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 |
|---|---|---|---|---|---|---|
| Mor-Gran-Sou Electric Coop Inc | ND | – | – | – | 13.4 | 92k |
| Montana-Dakota Utilities Co | Investor Owned | 95 | 65 | 0.81 | 11.1 | 80k |
| 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.
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 19,085 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 →