Power outage history
Miami County Ohio
2.8hours
without power for the average customer in a typical year, 2018–2025
76th most of 88 in Ohio 57% 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 Miami's customers who were without power at that day's worst moment.
Year by year
Hours in the dark, per customer
2019 was the worst well-recorded year, at 4.9 hours for the average customer. Hatched years have a thin record and are left out of the averages.
Miami, 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 27, 2019 | Tornadoes | 7,686 | 18% | 26 h | 20 h | 70k |
| Feb 17, 2021 | No storm report | 8,874 | 20% | 10 h | 6.5 h | 51k |
| Feb 24, 2019 | No storm report | 4,706 | 11% | 25 h | 19 h | 33k |
| Jul 23, 2022 | Thunderstorms | 6,447 | 15% | 11 h | 8.0 h | 28k |
| Dec 23, 2022 | Winter storm | 5,835 | 13% | 20 h | 11 h | 26k |
| Jun 18, 2025 | Thunderstorms | 2,129 | 5% | 17 h | – | 22k |
| Nov 15, 2020 | Thunderstorms | 4,988 | 12% | 10 h | 8.0 h | 22k |
| Apr 2, 2016 | No storm report | 6,714 | 15% | 20 h | 3.5 h | 21k |
| Jan 11, 2020 | Tornadoes | 4,811 | 11% | 19 h | 3.2 h | 20k |
| Jul 2, 2023 | No storm report | 15,216 | 35% | 2.0 h | 30 min | 17k |
| Jan 21, 2025 | No storm report | 5,726 | 13% | 6.0 h | 3.0 h | 16k |
| Sep 27, 2024 | Hurricane Helene | 1,981 | 5% | 18 h | – | 13k |
| Dec 11, 2021 | Thunderstorms | 3,026 | 7% | 8.0 h | 7.2 h | 13k |
| Feb 28, 2024 | No storm report | 2,680 | 6% | 5.8 h | 5.8 h | 11k |
| Jun 18, 2021 | No storm report | 3,033 | 7% | 4.2 h | 4.2 h | 10k |
| Nov 25, 2018 | No storm report | 2,909 | 7% | 5.0 h | 5.0 h | 9.8k |
| Nov 15, 2018 | Ice storm | 1,158 | 3% | 11 h | – | 9.1k |
| Dec 5, 2024 | No storm report | 942 | 2% | 15 h | – | 8.5k |
| Mar 31, 2022 | Windstorm | 1,817 | 4% | 9.2 h | – | 8.3k |
| Jun 8, 2022 | Tornadoes | 2,614 | 6% | 7.0 h | 5.2 h | 7.7k |
| Jun 5, 2017 | Thunderstorms | 1,418 | 3% | 9.0 h | – | 7.2k |
| Jun 10, 2020 | Thunderstorms | 1,787 | 4% | 7.8 h | – | 7.1k |
| Dec 24, 2020 | No storm report | 2,987 | 7% | 2.5 h | 48 min | 6.7k |
| Jun 11, 2023 | Tornadoes | 876 | 2% | 9.2 h | – | 6.4k |
| Jun 22, 2025 | No storm report | 4,901 | 11% | 2.8 h | 2.2 h | 6.4k |
| Nov 5, 2022 | No storm report | 1,724 | 4% | 7.5 h | – | 5.8k |
| Feb 12, 2017 | No storm report | 1,326 | 3% | 5.5 h | – | 5.4k |
| Mar 14, 2017 | No storm report | 1,305 | 3% | 7.2 h | – | 5.1k |
| Jan 10, 2016 | No storm report | 1,187 | 3% | 6.0 h | – | 4.9k |
| Jan 20, 2019 | Winter storm | 1,113 | 3% | 5.0 h | – | 4.5k |
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 Miami from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.
- No storm on record 54%
- Tornadoes 18%
- Thunderstorms 17%
- Winter storm 6.3%
- Windstorm 2.3%
- Tropical storm 2.1%
- Ice storm 1.5%
Who keeps the lights on
Utilities serving Miami
As each utility reports to the Energy Information Administration for its whole Ohio territory, not this county alone. Outage minutes include major storm days.
| Utility | Type | Outage min / yr | Excl. major storms | Outages / yr | Residential ¢/kWh | Customers |
|---|---|---|---|---|---|---|
| Ohio Edison Co | Investor Owned | 244 | 131 | 1.51 | 16.0 | 961k |
| Dayton Power & Light Co | Investor Owned | 168 | 97 | 0.99 | 16.1 | 469k |
| City of Tipp City | OH | 30 | 29 | 0.16 | 13.0 | 47k |
| Pioneer Rural Elec Coop, Inc | Cooperative | 129 | 129 | 1.50 | 16.4 | 16k |
| City of Piqua | Municipal | 18 | 18 | 0.30 | 13.2 | 9.8k |
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
- Darke 5.1 h
- Shelby 4.7 h
- Champaign 4.5 h
- Montgomery 3.8 h
- Miami (this county) 2.8 h
- Clark 2.3 h
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 43,362 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 →