Oklahoma Power Outage Season
When outages happen most in Oklahoma, and what to expect.
May is historically Oklahoma's busiest month for recorded power outages, part of a summer season (June–August) that accounts for about 33% of all recorded outages statewide, averaging 2.7 hours per event. 10 of Oklahoma's 77 tracked counties currently carry a Reliability Grade of F.
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Oklahoma outages by month
Total recorded events and average duration per event, summed across every tracked county in Oklahoma.
Peak season insight
Oklahoma's outage season runs June–August, accounting for 33% of all recorded outages. May has the highest frequency.
Month-by-month data table
| Month | Events | Avg duration |
|---|---|---|
| January | 2,463 | 2.3 hrs |
| February | 2,615 | 2.3 hrs |
| March | 3,268 | 2.5 hrs |
| April | 3,877 | 2.7 hrs |
| May | 5,961 | 3.0 hrs |
| June | 5,881 | 3.2 hrs |
| July | 4,956 | 2.7 hrs |
| August | 4,651 | 2.3 hrs |
| September | 3,448 | 1.9 hrs |
| October | 3,711 | 3.5 hrs |
| November | 3,352 | 2.7 hrs |
| December | 3,004 | 2.9 hrs |
This month in Oklahoma
October has historically recorded 3,711 outage events across Oklahoma, below the state's typical monthly average. Outages that start in October have averaged 3.5 hours.
Main causes by season
Named storms behind Oklahoma's worst recorded outages, from the NOAA Storm Events Database.
Winter (December–February)
- Ice Storm
- Tornado
- Drought
- Winter Storm Uri
- Winter Storm
Spring (March–May)
- Thunderstorm Wind
- Hail
- Tornado
- Drought
- Flood
Summer (June–August)
- Heat
- Thunderstorm Wind
- Tornado
- Drought
- Hail
Fall (September–November)
- Drought
- Thunderstorm Wind
- Ice Storm
- Heat
- Hail
Oklahoma's worst outage events on record
The five largest outages in Oklahoma by duration and customers affected.
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Oct 26, 2020 | 178 hrs | 193,316 (46%) | Ice Storm |
| Jun 18, 2023 | 110 hrs | 171,636 (44%) | Thunderstorm Wind |
| Nov 2, 2020 | 78 hrs | 105,530 (25%) | Ice Storm |
| Aug 27, 2019 | 99 hrs | 80,563 (19%) | Hail |
| Oct 26, 2020 | 178 hrs | 38,173 (44%) | Ice Storm |
Highest-risk counties in Oklahoma
Lowest reliability percentile among Oklahoma's tracked counties.
| County | Grade | National percentile |
|---|---|---|
| Caddo County | F | 4th |
| Washita County | F | 10th |
| Oklahoma County | F | 15th |
| Tillman County | F | 15th |
| Kiowa County | F | 17th |
Live weather alerts for Oklahoma
Flood Watch
Flood Watch issued October 1 at 10:12AM CDT until October 1 at 1:00PM CDT by NWS Norman OK
Read the official NWS alert →Flood Advisory
Flood Advisory issued October 1 at 9:57AM CDT until October 1 at 1:00PM CDT by NWS Norman OK
Read the official NWS alert →These live alerts come from the National Weather Service. They are public-safety information, not an outage prediction.
Oklahoma power outage FAQ
When do power outages happen most in Oklahoma?
May is historically the busiest single month for recorded outages in Oklahoma, and Summer (June–August) accounts for about 33% of all recorded outages across the state.
How long do power outages in Oklahoma typically last?
Across Oklahoma's tracked counties, the average recorded outage lasts about 2.7 hours, though individual events -- especially named storms -- can run much longer.
Which counties in Oklahoma have the highest outage risk?
Caddo County, Washita County, Oklahoma County, Tillman County, Kiowa County currently rank lowest for reliability in Oklahoma. See each county's page for its full history.
Does this page predict a power outage in Oklahoma?
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 Oklahoma's outage season
Sized for Oklahoma's recorded outage frequency and duration.
