Power outage history
Madison County Mississippi
17hours
without power for the average customer in a typical year, 2018–2025
22nd most of 74 in Mississippi 2.6× 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 Madison's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2023 was the worst well-recorded year, at 24 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Madison, 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 15, 2023 | Thunderstorms | 16,661 | 51% | 4.4 d | 2.6 d | 431k |
| Mar 4, 2020 | Thunderstorms | 14,657 | 45% | 2.6 d | 40 h | 279k |
| Apr 9, 2024 | Thunderstorms | 9,003 | 27% | 2.8 d | 37 h | 239k |
| Feb 17, 2021 | Winter storm | 6,942 | 21% | 3.9 d | 3.0 d | 224k |
| May 4, 2021 | Thunderstorms | 11,930 | 36% | 2.3 d | 47 h | 212k |
| Jun 10, 2023 | Thunderstorms | 11,383 | 35% | 37 h | 23 h | 103k |
| Apr 13, 2019 | Thunderstorms | 5,537 | 17% | 47 h | 40 h | 98k |
| Mar 30, 2022 | Thunderstorms | 6,482 | 20% | 26 h | 22 h | 63k |
| Feb 15, 2025 | No storm report | 3,678 | 11% | 44 h | 31 h | 60k |
| Apr 13, 2022 | Thunderstorms | 6,822 | 21% | 25 h | 22 h | 60k |
| Jun 13, 2021 | Thunderstorms | 5,172 | 16% | 28 h | 26 h | 52k |
| Apr 11, 2016 | Thunderstorms | 4,497 | 14% | 23 h | 20 h | 52k |
| May 25, 2025 | Thunderstorms | 3,885 | 12% | 21 h | 16 h | 49k |
| Feb 14, 2020 | No storm report | 1,216 | 4% | 4.5 d | – | 45k |
| Dec 27, 2024 | Windstorm | 3,373 | 10% | 38 h | 32 h | 41k |
| Mar 4, 2025 | Windstorm | 5,083 | 16% | 25 h | 22 h | 41k |
| Jun 25, 2023 | Thunderstorms | 3,871 | 12% | 24 h | 22 h | 40k |
| Apr 18, 2019 | Thunderstorms | 4,379 | 13% | 27 h | 21 h | 40k |
| Mar 22, 2022 | Tornadoes | 3,325 | 10% | 47 h | 38 h | 39k |
| Apr 2, 2017 | Flooding | 2,210 | 7% | 38 h | 37 h | 37k |
| Apr 2, 2025 | No storm report | 4,253 | 13% | 26 h | 21 h | 33k |
| Dec 22, 2022 | No storm report | 3,169 | 10% | 20 h | 4.2 h | 32k |
| Dec 28, 2024 | Tornadoes | 1,532 | 5% | 39 h | – | 32k |
| May 15, 2022 | No storm report | 3,293 | 10% | 24 h | 24 h | 32k |
| Jun 10, 2022 | Thunderstorms | 2,561 | 8% | 28 h | 27 h | 31k |
| Jul 1, 2025 | Thunderstorms | 3,366 | 10% | 25 h | 24 h | 31k |
| Apr 30, 2017 | Tornadoes | 3,691 | 11% | 20 h | 11 h | 31k |
| Nov 12, 2024 | No storm report | 3,931 | 12% | 9.2 h | 10 h | 29k |
| Oct 26, 2015 | No storm report | 3,767 | 11% | 17 h | 16 h | 27k |
| Jul 9, 2022 | Thunderstorms | 2,252 | 7% | 23 h | 21 h | 27k |
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 Madison from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Thunderstorms 59%
- No storm on record 27%
- Winter storm 6.4%
- Tornadoes 3.1%
- Windstorm 2.4%
- Tropical storm 2.3%
Who keeps the lights on
Utilities serving Madison
As each utility reports to the Energy Information Administration for its whole Mississippi territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Entergy Mississippi LLC | Investor Owned | 640 | 410 | 2.61 | 13.9 | 384k |
| Canton Municipal Utilities | MS | – | – | – | 9.7 | 48k |
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 32,775 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 →