Miller County Power Outage History
2015–2025 · Missouri
Better than average — fewer or shorter outages than most counties. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 23, 2019 | 63 hrs | 4,791 (31%) | Thunderstorm Wind |
| May 19, 2025 | 1 hrs | 4,230 (27%) | Unnamed event |
| Jul 16, 2023 | 10 hrs | 4,083 (26%) | Drought |
| Jul 17, 2023 | 4 hrs | 2,805 (18%) | Drought |
| Jun 3, 2025 | 25 hrs | 2,795 (18%) | Thunderstorm Wind |
Over the 11 years from 2015 to 2025, Miller County recorded 316 distinct power outage events, averaging 3.0 hours per event.
The single worst outage on record in Miller County started May 23, 2019 (Thunderstorm Wind), lasting 63 hours and leaving up to 4,791 customers without power (31% of the county) at its peak.
May has historically been the worst month for outages in Miller County, with 43 events recorded during that month across the dataset.
Based on this history, Miller County earns a Reliability Grade of B, placing it in the 66th percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Miller County's outage profile
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Outage-prep kit
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Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Miller County.
| County | Grade | National percentile |
|---|---|---|
| Maries County | B | 66th |
| Clay County | B | 66th |
| Clinton County | B | 65th |
| Mississippi County | B | 65th |
| Ray County | B | 67th |
FAQ
How often does power go out in Miller County?
Between 2015 and 2025, Miller County recorded 316 outage events, averaging 3.0 hours each.
What is Miller County's reliability grade?
Miller County has a Reliability Grade of B, in the 66th national percentile.
What was the worst power outage in Miller County?
The worst outage on record started May 23, 2019 (Thunderstorm Wind), lasting 63 hours and affecting up to 4,791 customers.