Indiana Power Outage Season
When outages happen most in Indiana, and what to expect.
June is historically Indiana's busiest month for recorded power outages, part of a summer season (June–August) that accounts for about 34% of all recorded outages statewide, averaging 3.1 hours per event. 5 of Indiana's 91 tracked counties currently carry a Reliability Grade of F.
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Indiana outages by month
Total recorded events and average duration per event, summed across every tracked county in Indiana.
Peak season insight
Indiana's outage season runs June–August, accounting for 34% of all recorded outages. June has the highest frequency.
Month-by-month data table
| Month | Events | Avg duration |
|---|---|---|
| January | 2,697 | 2.6 hrs |
| February | 2,544 | 2.5 hrs |
| March | 3,488 | 3.2 hrs |
| April | 3,507 | 3.5 hrs |
| May | 4,014 | 3.1 hrs |
| June | 5,575 | 3.9 hrs |
| July | 5,328 | 3.5 hrs |
| August | 4,101 | 3.7 hrs |
| September | 3,247 | 2.3 hrs |
| October | 3,267 | 2.4 hrs |
| November | 3,816 | 2.8 hrs |
| December | 3,107 | 2.8 hrs |
This month in Indiana
October has historically recorded 3,267 outage events across Indiana, below the state's typical monthly average. Outages that start in October have averaged 2.4 hours.
Main causes by season
Named storms behind Indiana's worst recorded outages, from the NOAA Storm Events Database.
Winter (December–February)
- Winter Weather
- Ice Storm
- Cold/Wind Chill
- Winter Storm
- Heavy Snow
Spring (March–May)
- Tornado
- Thunderstorm Wind
- Flash Flood
- Funnel Cloud
- Hail
Summer (June–August)
- Tornado
- Thunderstorm Wind
- Hail
- Flash Flood
- Heat
Fall (September–November)
- Ice Storm
- Dense Fog
- Tornado
- Thunderstorm Wind
- Strong Wind
Indiana's worst outage events on record
The five largest outages in Indiana by duration and customers affected.
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jun 18, 2025 | 111 hrs | 66,663 (13%) | Thunderstorm Wind |
| Sep 27, 2024 | 113 hrs | 58,108 (12%) | Tropical Storm Helene |
| Jun 25, 2024 | 85 hrs | 49,646 (66%) | Thunderstorm Wind |
| Jun 30, 2023 | 105 hrs | 39,807 (76%) | Hail |
| May 16, 2025 | 71 hrs | 52,758 (21%) | Thunderstorm Wind |
Highest-risk counties in Indiana
Lowest reliability percentile among Indiana's tracked counties.
| County | Grade | National percentile |
|---|---|---|
| Brown County | F | 9th |
| Owen County | F | 12th |
| Crawford County | F | 14th |
| Warrick County | F | 18th |
| Vigo County | F | 20th |
Live weather alerts for Indiana
There are no active National Weather Service alerts for Indiana right now.
These live alerts come from the National Weather Service. They are public-safety information, not an outage prediction.
Indiana power outage FAQ
When do power outages happen most in Indiana?
June is historically the busiest single month for recorded outages in Indiana, and Summer (June–August) accounts for about 34% of all recorded outages across the state.
How long do power outages in Indiana typically last?
Across Indiana's tracked counties, the average recorded outage lasts about 3.1 hours, though individual events -- especially named storms -- can run much longer.
Which counties in Indiana have the highest outage risk?
Brown County, Owen County, Crawford County, Warrick County, Vigo County currently rank lowest for reliability in Indiana. See each county's page for its full history.
Does this page predict a power outage in Indiana?
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 Indiana's outage season
Sized for Indiana's recorded outage frequency and duration.
