Cole County Power Outage History
2014–2025 · Missouri
Top 20% most reliable nationally — infrequent, short outages. How grades are calculated
Outages by year
Outages by month (seasonality)
Worst outage events on record
| Date | Duration | Customers affected | Cause |
|---|---|---|---|
| May 23, 2019 | 65 hrs | 13,018 (21%) | Thunderstorm Wind |
| Jun 27, 2021 | 1 hrs | 5,463 (9%) | Flash Flood |
| Jun 26, 2021 | 6 hrs | 5,047 (8%) | Flash Flood |
| May 24, 2015 | 0 hrs | 3,079 (5%) | Unnamed event |
| Jan 31, 2025 | 0 hrs | 2,965 (5%) | Unnamed event |
Over the 12 years from 2014 to 2025, Cole County recorded 228 distinct power outage events, averaging 1.9 hours per event.
The single worst outage on record in Cole County started May 23, 2019 (Thunderstorm Wind), lasting 65 hours and leaving up to 13,018 customers without power (21% of the county) at its peak.
September has historically been the worst month for outages in Cole County, with 28 events recorded during that month across the dataset.
Based on this history, Cole County earns a Reliability Grade of A, placing it in the 93rd percentile nationally for grid reliability (higher percentile = more reliable).
Sized for Cole County's outage profile
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Similar counties in Missouri
Counties with the closest reliability grade and national percentile to Cole County.
| County | Grade | National percentile |
|---|---|---|
| Cedar County | A | 93rd |
| Sullivan County | A | 93rd |
| Linn County | A | 93rd |
| Dunklin County | A | 94th |
| Grundy County | A | 94th |
FAQ
How often does power go out in Cole County?
Between 2014 and 2025, Cole County recorded 228 outage events, averaging 1.9 hours each.
What is Cole County's reliability grade?
Cole County has a Reliability Grade of A, in the 93rd national percentile.
What was the worst power outage in Cole County?
The worst outage on record started May 23, 2019 (Thunderstorm Wind), lasting 65 hours and affecting up to 13,018 customers.