Power outage history
Ouachita Parish Louisiana
20hours
without power for the average customer in a typical year, 2018–2025
38th most of 63 in Louisiana 3.1× 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 Ouachita'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 4.8 days for the average customer. Hatched years have a thin record and are left out of the averages.
Ouachita, 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 |
|---|---|---|---|---|---|---|
| Aug 27, 2020 | Hurricane Laura | 61,793 | 100% | 7.5 d | 8.2 h | 5.2M |
| Oct 9, 2020 | Hurricane Delta | 38,231 | 62% | 3.7 d | 2.4 d | 1.2M |
| Apr 12, 2020 | Tornadoes | 15,382 | 25% | 3.5 d | 3.4 d | 458k |
| Apr 12, 2022 | Thunderstorms | 12,088 | 20% | 46 h | 30 h | 168k |
| Feb 17, 2021 | Winter storm | 5,664 | 9% | 2.7 d | 2.6 d | 156k |
| Apr 9, 2024 | Thunderstorms | 11,879 | 19% | 46 h | 35 h | 154k |
| May 6, 2025 | Thunderstorms | 7,902 | 13% | 2.2 d | 2.1 d | 135k |
| May 8, 2019 | Tornadoes | 6,082 | 10% | 26 h | 25 h | 84k |
| Jun 16, 2023 | Thunderstorms | 12,080 | 20% | 32 h | 16 h | 83k |
| Jun 3, 2024 | Thunderstorms | 6,385 | 10% | 24 h | 23 h | 78k |
| Mar 28, 2018 | Thunderstorms | 5,963 | 10% | 24 h | 22 h | 58k |
| Jun 25, 2020 | No storm report | 7,884 | 13% | 14 h | 9.8 h | 56k |
| Apr 2, 2017 | Thunderstorms | 10,668 | 17% | 24 h | 18 h | 50k |
| Aug 20, 2018 | Thunderstorms | 5,196 | 8% | 20 h | 20 h | 47k |
| Jan 11, 2020 | No storm report | 7,835 | 13% | 8.5 h | 4.5 h | 40k |
| Apr 3, 2018 | Thunderstorms | 5,600 | 9% | 20 h | 20 h | 40k |
| Apr 13, 2019 | Thunderstorms | 2,023 | 3% | 33 h | – | 37k |
| Jun 24, 2019 | No storm report | 4,212 | 7% | 16 h | 13 h | 37k |
| Jul 14, 2016 | Thunderstorms | 7,272 | 12% | 15 h | 14 h | 35k |
| Jul 16, 2023 | Thunderstorms | 4,830 | 8% | 20 h | 17 h | 34k |
| Sep 9, 2019 | Thunderstorms | 3,914 | 6% | 19 h | 21 h | 31k |
| May 4, 2021 | Thunderstorms | 4,878 | 8% | 20 h | 18 h | 29k |
| Aug 18, 2025 | Heat | 4,141 | 7% | 19 h | 19 h | 27k |
| Jul 6, 2018 | Thunderstorms | 1,265 | 2% | 20 h | – | 25k |
| Apr 9, 2021 | Thunderstorms | 7,362 | 12% | 14 h | 13 h | 23k |
| Apr 13, 2018 | Tornadoes | 2,123 | 3% | 15 h | – | 21k |
| Jul 29, 2025 | Thunderstorms | 3,026 | 5% | 18 h | – | 21k |
| Sep 16, 2025 | Thunderstorms | 3,142 | 5% | 19 h | 20 h | 21k |
| Sep 1, 2021 | Heat | 3,370 | 5% | 21 h | 22 h | 20k |
| Aug 18, 2024 | Heat | 2,565 | 4% | 14 h | – | 19k |
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 Ouachita from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- Tropical storm 72%
- Thunderstorms 12%
- No storm on record 6.5%
- Tornadoes 6.3%
- Winter storm 2.0%
- Heat 1.4%
Who keeps the lights on
Utilities serving Ouachita
As each utility reports to the Energy Information Administration for its whole Louisiana 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 Louisiana LLC | Investor Owned | 253 | 218 | 1.83 | 11.9 | 962k |
| Claiborne Electric Coop, Inc | Cooperative | – | – | – | 13.3 | 21k |
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 61,793 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 →