Warren County Power Outage History
2014–2025 · Missouri
Average — typical outage frequency and duration nationally. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| Jul 10, 2021 | 68 hrs | 9,825 (44%) | Thunderstorm Wind |
| Sep 30, 2025 | 0 hrs | 5,799 (26%) | Unnamed event |
| Jun 13, 2016 | 2 hrs | 5,088 (23%) | Unnamed event |
| Aug 12, 2021 | 40 hrs | 5,059 (23%) | Thunderstorm Wind |
| Aug 23, 2021 | 3 hrs | 3,080 (14%) | Unnamed event |
Over the 12 years from 2014 to 2025, Warren County recorded 725 distinct power outage events, averaging 2.5 hours per event.
The single worst outage on record in Warren County started July 10, 2021 (Thunderstorm Wind), lasting 68 hours and leaving up to 9,825 customers without power (44% of the county) at its peak.
July has historically been the worst month for outages in Warren County, with 79 events recorded during that month across the dataset.
Based on this history, Warren County earns a Reliability Grade of C, placing it in the 51st percentile nationally for grid reliability (higher percentile = more reliable).
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Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Warren County.
| County | Grade | National percentile |
|---|---|---|
| Crawford County | C | 51st |
| Buchanan County | C | 51st |
| Webster County | C | 50th |
| Dent County | C | 50th |
| Ozark County | C | 53rd |
FAQ
How often does power go out in Warren County?
Between 2014 and 2025, Warren County recorded 725 outage events, averaging 2.5 hours each.
What is Warren County's reliability grade?
Warren County has a Reliability Grade of C, in the 51st national percentile.
What was the worst power outage in Warren County?
The worst outage on record started July 10, 2021 (Thunderstorm Wind), lasting 68 hours and affecting up to 9,825 customers.