Ohio Power Outage Season
When outages happen most in Ohio, and what to expect.
June is historically Ohio's busiest month for recorded power outages, part of a summer season (June–August) that accounts for about 32% of all recorded outages statewide, averaging 3.0 hours per event. 9 of Ohio's 88 tracked counties currently carry a Reliability Grade of F.
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Ohio outages by month
Total recorded events and average duration per event, summed across every tracked county in Ohio.
Peak season insight
Ohio's outage season runs June–August, accounting for 32% of all recorded outages. June has the highest frequency.
Month-by-month data table
| Month | Events | Avg duration |
|---|---|---|
| January | 4,749 | 2.7 hrs |
| February | 4,661 | 3.9 hrs |
| March | 5,616 | 3.7 hrs |
| April | 5,956 | 3.2 hrs |
| May | 6,976 | 2.7 hrs |
| June | 8,751 | 3.8 hrs |
| July | 8,743 | 2.8 hrs |
| August | 6,975 | 3.0 hrs |
| September | 5,902 | 2.5 hrs |
| October | 5,579 | 2.3 hrs |
| November | 6,207 | 3.0 hrs |
| December | 5,259 | 3.0 hrs |
This month in Ohio
October has historically recorded 5,579 outage events across Ohio, below the state's typical monthly average. Outages that start in October have averaged 2.3 hours.
Main causes by season
Named storms behind Ohio's worst recorded outages, from the NOAA Storm Events Database.
Winter (December–February)
- Winter Storm
- Ice Storm
- High Wind
- Flood
- Winter Weather
Spring (March–May)
- Thunderstorm Wind
- Tornado
- Hail
- Winter Storm
- High Wind
Summer (June–August)
- Thunderstorm Wind
- Tornado
- Flood
- Flash Flood
- Hurricane Barry
Fall (September–November)
- Hurricane Helene
- Winter Weather
- Drought
- Thunderstorm Wind
- Ice Storm
Ohio's worst outage events on record
The five largest outages in Ohio by duration and customers affected.
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Aug 6, 2024 | 169 hrs | 223,470 (37%) | Tornado |
| Jun 14, 2022 | 71 hrs | 165,305 (28%) | Thunderstorm Wind |
| Aug 23, 2023 | 144 hrs | 70,828 (12%) | Flash Flood |
| Aug 6, 2024 | 143 hrs | 65,283 (54%) | Thunderstorm Wind |
| Sep 28, 2024 | 121 hrs | 58,113 (20%) | Hurricane Helene |
Highest-risk counties in Ohio
Lowest reliability percentile among Ohio's tracked counties.
| County | Grade | National percentile |
|---|---|---|
| Hocking County | F | 5th |
| Vinton County | F | 8th |
| Harrison County | F | 9th |
| Pike County | F | 9th |
| Morgan County | F | 10th |
Live weather alerts for Ohio
There are no active National Weather Service alerts for Ohio right now.
These live alerts come from the National Weather Service. They are public-safety information, not an outage prediction.
Ohio power outage FAQ
When do power outages happen most in Ohio?
June is historically the busiest single month for recorded outages in Ohio, and Summer (June–August) accounts for about 32% of all recorded outages across the state.
How long do power outages in Ohio typically last?
Across Ohio's tracked counties, the average recorded outage lasts about 3.0 hours, though individual events -- especially named storms -- can run much longer.
Which counties in Ohio have the highest outage risk?
Hocking County, Vinton County, Harrison County, Pike County, Morgan County currently rank lowest for reliability in Ohio. See each county's page for its full history.
Does this page predict a power outage in Ohio?
No. It describes patterns in recorded county-level outage history, not a guaranteed future event. Check the live National Weather Service alerts below for current conditions.
Prepare for Ohio's outage season
Sized for Ohio's recorded outage frequency and duration.
