Power outage history
Henry County Missouri
7.5hours
without power for the average customer in a typical year, 2018–2025
28th most of 110 in Missouri close to 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 Henry's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2025 was the worst well-recorded year, at 12 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Henry, 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 |
|---|---|---|---|---|---|---|
| May 19, 2025 | Thunderstorms | 2,270 | 36% | 4.0 d | 4.8 h | 46k |
| Jul 30, 2023 | Thunderstorms | 4,882 | 78% | 24 h | 16 h | 32k |
| May 17, 2015 | Tornadoes | 3,602 | 58% | 21 h | 10 h | 21k |
| May 4, 2020 | Thunderstorms | 2,469 | 40% | 18 h | 14 h | 18k |
| Aug 15, 2020 | Thunderstorms | 2,828 | 45% | 11 h | 6.5 h | 9.7k |
| Jan 12, 2019 | Winter storm | 569 | 9% | 28 h | 26 h | 9.4k |
| Oct 29, 2024 | No storm report | 795 | 13% | 12 h | 48 min | 8.9k |
| Jun 4, 2020 | No storm report | 1,459 | 23% | 14 h | 8.0 h | 8.9k |
| May 27, 2017 | Thunderstorms | 1,389 | 22% | 16 h | 15 h | 7.5k |
| Oct 22, 2024 | No storm report | 1,606 | 26% | 4.8 h | 2.2 h | 6.9k |
| May 24, 2015 | No storm report | 4,787 | 77% | 3.0 h | 3.8 h | 6.4k |
| Mar 21, 2021 | No storm report | 2,715 | 44% | 2.2 h | 3.5 h | 6.1k |
| Sep 3, 2024 | No storm report | 1,605 | 26% | 5.8 h | 7.2 h | 5.9k |
| May 2, 2018 | No storm report | 424 | 7% | 13 h | 4.5 h | 5.5k |
| Jun 25, 2021 | No storm report | 2,321 | 37% | 7.0 h | 1.8 h | 5.3k |
| Jun 22, 2019 | No storm report | 1,293 | 21% | 17 h | 5.8 h | 5.1k |
| Oct 6, 2016 | No storm report | 661 | 11% | 11 h | 11 h | 4.5k |
| Jul 13, 2017 | No storm report | 2,882 | 46% | 1.8 h | 30 min | 4.3k |
| Jul 8, 2022 | Thunderstorms | 619 | 10% | 12 h | 10 h | 3.9k |
| Nov 25, 2017 | No storm report | 2,912 | 47% | 2.0 h | 1.0 h | 3.9k |
| Jul 1, 2015 | Thunderstorms | 1,250 | 20% | 11 h | 5.0 h | 3.8k |
| Jul 1, 2022 | No storm report | 1,006 | 16% | 3.5 h | 8.0 h | 3.5k |
| Jul 1, 2023 | No storm report | 388 | 6% | 18 h | 17 h | 3.5k |
| Jun 15, 2016 | No storm report | 701 | 11% | 5.0 h | 2.0 h | 3.4k |
| Nov 7, 2023 | No storm report | 323 | 5% | 11 h | 11 h | 3.4k |
| Jan 1, 2021 | Winter storm | 400 | 6% | 16 h | 13 h | 3.3k |
| Dec 16, 2021 | No storm report | 578 | 9% | 5.8 h | 2.8 h | 3.2k |
| Jul 10, 2019 | No storm report | 1,402 | 23% | 3.5 h | 1.2 h | 3.1k |
| Apr 5, 2023 | Thunderstorms | 871 | 14% | 3.8 h | 2.2 h | 3.0k |
| Aug 1, 2015 | No storm report | 1,349 | 22% | 4.5 h | 2.8 h | 2.8k |
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 Henry from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 56%
- Thunderstorms 38%
- Winter storm 5.2%
Who keeps the lights on
Utilities serving Henry
As each utility reports to the Energy Information Administration for its whole Missouri territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Evergy Missouri West | Investor Owned | 184 | 104 | 1.49 | 12.1 | 309k |
| Sac-Osage Electric Coop Inc | MO | 208 | 205 | – | 12.9 | 133k |
| Osage Valley Elec Coop Assn | Cooperative | 379 | 3 | 0.69 | 14.8 | 17k |
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 6,221 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 →